/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/bresenham-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 18:29:28,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 18:29:28,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 18:29:28,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 18:29:28,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 18:29:28,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 18:29:28,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 18:29:28,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 18:29:28,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 18:29:28,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 18:29:28,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 18:29:28,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 18:29:28,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 18:29:28,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 18:29:28,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 18:29:28,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 18:29:28,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 18:29:28,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 18:29:28,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 18:29:28,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 18:29:28,755 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 18:29:28,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 18:29:28,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 18:29:28,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 18:29:28,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 18:29:28,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 18:29:28,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 18:29:28,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 18:29:28,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 18:29:28,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 18:29:28,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 18:29:28,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 18:29:28,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 18:29:28,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 18:29:28,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 18:29:28,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 18:29:28,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 18:29:28,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 18:29:28,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 18:29:28,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 18:29:28,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 18:29:28,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 18:29:28,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 18:29:28,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 18:29:28,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 18:29:28,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 18:29:28,780 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 18:29:28,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 18:29:28,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 18:29:28,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 18:29:28,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 18:29:28,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 18:29:28,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 18:29:28,781 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 18:29:28,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 18:29:28,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 18:29:28,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 18:29:28,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 18:29:28,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 18:29:28,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 18:29:28,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 18:29:28,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 18:29:28,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 18:29:28,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 18:29:28,783 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 18:29:28,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 18:29:28,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 18:29:28,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 18:29:28,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 18:29:28,943 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 18:29:28,943 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 18:29:28,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound50.c [2022-03-18 18:29:28,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9062cc794/60b9f8e3bd0d422d994d42323a798db9/FLAGb29c0b792 [2022-03-18 18:29:29,344 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 18:29:29,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound50.c [2022-03-18 18:29:29,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9062cc794/60b9f8e3bd0d422d994d42323a798db9/FLAGb29c0b792 [2022-03-18 18:29:29,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9062cc794/60b9f8e3bd0d422d994d42323a798db9 [2022-03-18 18:29:29,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 18:29:29,759 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 18:29:29,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 18:29:29,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 18:29:29,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 18:29:29,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 06:29:29" (1/1) ... [2022-03-18 18:29:29,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b09eba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:29:29, skipping insertion in model container [2022-03-18 18:29:29,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 06:29:29" (1/1) ... [2022-03-18 18:29:29,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 18:29:29,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 18:29:29,901 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound50.c[597,610] [2022-03-18 18:29:29,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 18:29:29,917 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 18:29:29,924 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound50.c[597,610] [2022-03-18 18:29:29,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 18:29:29,937 INFO L208 MainTranslator]: Completed translation [2022-03-18 18:29:29,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:29:29 WrapperNode [2022-03-18 18:29:29,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 18:29:29,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 18:29:29,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 18:29:29,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 18:29:29,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:29:29" (1/1) ... [2022-03-18 18:29:29,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:29:29" (1/1) ... [2022-03-18 18:29:29,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:29:29" (1/1) ... [2022-03-18 18:29:29,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:29:29" (1/1) ... [2022-03-18 18:29:29,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:29:29" (1/1) ... [2022-03-18 18:29:29,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:29:29" (1/1) ... [2022-03-18 18:29:29,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:29:29" (1/1) ... [2022-03-18 18:29:29,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 18:29:29,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 18:29:29,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 18:29:29,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 18:29:29,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:29:29" (1/1) ... [2022-03-18 18:29:29,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 18:29:29,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:29:29,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 18:29:29,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 18:29:30,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 18:29:30,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 18:29:30,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 18:29:30,009 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 18:29:30,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 18:29:30,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 18:29:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 18:29:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 18:29:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 18:29:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 18:29:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 18:29:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 18:29:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 18:29:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 18:29:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 18:29:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 18:29:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 18:29:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 18:29:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 18:29:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 18:29:30,050 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 18:29:30,051 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 18:29:30,142 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 18:29:30,146 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 18:29:30,146 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 18:29:30,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 06:29:30 BoogieIcfgContainer [2022-03-18 18:29:30,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 18:29:30,148 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 18:29:30,148 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 18:29:30,165 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 18:29:30,168 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 06:29:30" (1/1) ... [2022-03-18 18:29:30,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 06:29:30 BasicIcfg [2022-03-18 18:29:30,183 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 18:29:30,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 18:29:30,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 18:29:30,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 18:29:30,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 06:29:29" (1/4) ... [2022-03-18 18:29:30,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a055511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 06:29:30, skipping insertion in model container [2022-03-18 18:29:30,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 06:29:29" (2/4) ... [2022-03-18 18:29:30,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a055511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 06:29:30, skipping insertion in model container [2022-03-18 18:29:30,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 06:29:30" (3/4) ... [2022-03-18 18:29:30,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a055511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 06:29:30, skipping insertion in model container [2022-03-18 18:29:30,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 06:29:30" (4/4) ... [2022-03-18 18:29:30,200 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound50.cJordan [2022-03-18 18:29:30,204 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 18:29:30,204 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 18:29:30,235 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 18:29:30,243 INFO L340 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 [2022-03-18 18:29:30,244 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 18:29:30,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 18:29:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-18 18:29:30,258 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:29:30,258 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:29:30,259 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:29:30,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:29:30,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1563578423, now seen corresponding path program 1 times [2022-03-18 18:29:30,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:29:30,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988420825] [2022-03-18 18:29:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:30,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:29:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:29:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 18:29:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:29:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 18:29:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:29:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 18:29:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:29:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 18:29:30,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:29:30,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988420825] [2022-03-18 18:29:30,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988420825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 18:29:30,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 18:29:30,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 18:29:30,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161622582] [2022-03-18 18:29:30,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 18:29:30,389 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 18:29:30,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:29:30,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 18:29:30,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 18:29:30,407 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-18 18:29:30,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:29:30,455 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-03-18 18:29:30,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 18:29:30,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-03-18 18:29:30,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:29:30,461 INFO L225 Difference]: With dead ends: 32 [2022-03-18 18:29:30,461 INFO L226 Difference]: Without dead ends: 27 [2022-03-18 18:29:30,462 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 18:29:30,465 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 18:29:30,466 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 18:29:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-18 18:29:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-18 18:29:30,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 18:29:30,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-03-18 18:29:30,497 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2022-03-18 18:29:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:29:30,498 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-03-18 18:29:30,498 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-18 18:29:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-03-18 18:29:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-18 18:29:30,501 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:29:30,501 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:29:30,501 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 18:29:30,501 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:29:30,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:29:30,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1863481077, now seen corresponding path program 1 times [2022-03-18 18:29:30,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:29:30,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081337773] [2022-03-18 18:29:30,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:30,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:29:30,531 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:29:30,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971635317] [2022-03-18 18:29:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:30,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:30,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:29:30,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 18:29:30,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 18:29:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:29:30,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-18 18:29:30,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:29:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 18:29:30,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 18:29:30,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:29:30,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081337773] [2022-03-18 18:29:30,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:29:30,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971635317] [2022-03-18 18:29:30,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971635317] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 18:29:30,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 18:29:30,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 18:29:30,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61776056] [2022-03-18 18:29:30,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 18:29:30,771 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 18:29:30,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:29:30,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 18:29:30,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 18:29:30,772 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 18:29:30,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:29:30,826 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-03-18 18:29:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 18:29:30,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-03-18 18:29:30,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:29:30,828 INFO L225 Difference]: With dead ends: 37 [2022-03-18 18:29:30,828 INFO L226 Difference]: Without dead ends: 35 [2022-03-18 18:29:30,829 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 18:29:30,829 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 18:29:30,830 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 18:29:30,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-18 18:29:30,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-03-18 18:29:30,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 18:29:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-03-18 18:29:30,834 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 23 [2022-03-18 18:29:30,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:29:30,835 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-03-18 18:29:30,835 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 18:29:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-03-18 18:29:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-18 18:29:30,836 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:29:30,836 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:29:30,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 18:29:31,061 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:31,061 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:29:31,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:29:31,062 INFO L85 PathProgramCache]: Analyzing trace with hash -646008129, now seen corresponding path program 1 times [2022-03-18 18:29:31,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:29:31,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677041211] [2022-03-18 18:29:31,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:31,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:29:31,079 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:29:31,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347278831] [2022-03-18 18:29:31,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:31,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:31,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:29:31,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 18:29:31,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 18:29:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:29:31,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 18:29:31,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:29:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 18:29:31,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:29:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-18 18:29:31,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:29:31,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677041211] [2022-03-18 18:29:31,436 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:29:31,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347278831] [2022-03-18 18:29:31,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347278831] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:29:31,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 18:29:31,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-03-18 18:29:31,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831585210] [2022-03-18 18:29:31,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 18:29:31,438 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 18:29:31,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:29:31,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 18:29:31,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-18 18:29:31,439 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 18:29:31,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:29:31,647 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-03-18 18:29:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 18:29:31,647 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 32 [2022-03-18 18:29:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:29:31,648 INFO L225 Difference]: With dead ends: 46 [2022-03-18 18:29:31,648 INFO L226 Difference]: Without dead ends: 42 [2022-03-18 18:29:31,648 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-03-18 18:29:31,650 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 18:29:31,651 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 138 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 18:29:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-03-18 18:29:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-03-18 18:29:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 18:29:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-03-18 18:29:31,654 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 32 [2022-03-18 18:29:31,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:29:31,655 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-03-18 18:29:31,655 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-18 18:29:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-03-18 18:29:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-18 18:29:31,656 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:29:31,656 INFO L500 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:29:31,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 18:29:31,856 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 18:29:31,857 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:29:31,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:29:31,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1661983408, now seen corresponding path program 1 times [2022-03-18 18:29:31,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:29:31,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806588733] [2022-03-18 18:29:31,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:31,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:29:31,868 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:29:31,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488758798] [2022-03-18 18:29:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:31,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:31,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:29:31,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 18:29:31,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 18:29:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:29:31,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-18 18:29:31,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:29:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-18 18:29:32,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:29:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-18 18:29:32,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:29:32,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806588733] [2022-03-18 18:29:32,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:29:32,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488758798] [2022-03-18 18:29:32,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488758798] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:29:32,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 18:29:32,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-03-18 18:29:32,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887064481] [2022-03-18 18:29:32,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 18:29:32,557 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-18 18:29:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:29:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-18 18:29:32,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-18 18:29:32,558 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-03-18 18:29:33,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:29:33,039 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-03-18 18:29:33,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-18 18:29:33,039 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 39 [2022-03-18 18:29:33,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:29:33,040 INFO L225 Difference]: With dead ends: 59 [2022-03-18 18:29:33,040 INFO L226 Difference]: Without dead ends: 53 [2022-03-18 18:29:33,040 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=989, Unknown=0, NotChecked=0, Total=1190 [2022-03-18 18:29:33,041 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 18:29:33,041 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 248 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 188 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2022-03-18 18:29:33,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-18 18:29:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2022-03-18 18:29:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 18:29:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-03-18 18:29:33,045 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 39 [2022-03-18 18:29:33,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:29:33,045 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-03-18 18:29:33,046 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-03-18 18:29:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-03-18 18:29:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-18 18:29:33,046 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:29:33,047 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:29:33,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 18:29:33,263 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:33,263 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:29:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:29:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1381917339, now seen corresponding path program 1 times [2022-03-18 18:29:33,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:29:33,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038243477] [2022-03-18 18:29:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:33,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:29:33,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:29:33,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013010934] [2022-03-18 18:29:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:33,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:33,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:29:33,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 18:29:33,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 18:29:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:29:33,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 18:29:33,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:29:33,440 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:29:33,442 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:29:37,342 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-03-18 18:29:37,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:29:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-03-18 18:29:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:29:37,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038243477] [2022-03-18 18:29:37,552 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:29:37,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013010934] [2022-03-18 18:29:37,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013010934] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:29:37,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 18:29:37,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-03-18 18:29:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759998008] [2022-03-18 18:29:37,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 18:29:37,553 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 18:29:37,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:29:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 18:29:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=146, Unknown=1, NotChecked=0, Total=182 [2022-03-18 18:29:37,553 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-03-18 18:29:39,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:29:43,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:29:45,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:29:47,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:29:49,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:29:51,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-18 18:29:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:29:53,959 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-03-18 18:29:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 18:29:53,959 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 48 [2022-03-18 18:29:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:29:53,960 INFO L225 Difference]: With dead ends: 59 [2022-03-18 18:29:53,960 INFO L226 Difference]: Without dead ends: 55 [2022-03-18 18:29:53,960 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=66, Invalid=237, Unknown=3, NotChecked=0, Total=306 [2022-03-18 18:29:53,960 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 15 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-03-18 18:29:53,961 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 186 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 140 Invalid, 6 Unknown, 0 Unchecked, 12.2s Time] [2022-03-18 18:29:53,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-18 18:29:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2022-03-18 18:29:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 18:29:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2022-03-18 18:29:53,964 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 48 [2022-03-18 18:29:53,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:29:53,965 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2022-03-18 18:29:53,965 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-03-18 18:29:53,965 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2022-03-18 18:29:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-18 18:29:53,966 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:29:53,966 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:29:53,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 18:29:54,166 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:54,167 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:29:54,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:29:54,167 INFO L85 PathProgramCache]: Analyzing trace with hash -545218702, now seen corresponding path program 1 times [2022-03-18 18:29:54,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:29:54,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101032290] [2022-03-18 18:29:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:54,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:29:54,178 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:29:54,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559131507] [2022-03-18 18:29:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:54,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:54,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:29:54,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 18:29:54,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 18:29:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 18:29:54,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 18:29:54,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:29:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-18 18:29:54,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:29:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-18 18:29:54,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:29:54,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101032290] [2022-03-18 18:29:54,587 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:29:54,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559131507] [2022-03-18 18:29:54,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559131507] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:29:54,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 18:29:54,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-03-18 18:29:54,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242317160] [2022-03-18 18:29:54,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 18:29:54,588 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 18:29:54,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:29:54,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 18:29:54,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-03-18 18:29:54,588 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-03-18 18:29:54,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:29:54,730 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2022-03-18 18:29:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 18:29:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 57 [2022-03-18 18:29:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:29:54,731 INFO L225 Difference]: With dead ends: 72 [2022-03-18 18:29:54,732 INFO L226 Difference]: Without dead ends: 72 [2022-03-18 18:29:54,732 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-03-18 18:29:54,732 INFO L912 BasicCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 18:29:54,732 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 241 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 18:29:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-18 18:29:54,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2022-03-18 18:29:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-18 18:29:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-03-18 18:29:54,737 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 57 [2022-03-18 18:29:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:29:54,737 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-03-18 18:29:54,737 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-03-18 18:29:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-03-18 18:29:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-18 18:29:54,738 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:29:54,738 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:29:54,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 18:29:54,951 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:54,952 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:29:54,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:29:54,952 INFO L85 PathProgramCache]: Analyzing trace with hash 494880272, now seen corresponding path program 2 times [2022-03-18 18:29:54,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:29:54,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34450387] [2022-03-18 18:29:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:54,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:29:54,961 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:29:54,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404205360] [2022-03-18 18:29:54,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 18:29:54,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:54,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:29:54,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 18:29:54,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 18:29:55,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 18:29:55,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 18:29:55,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 18:29:55,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:29:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-18 18:29:55,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:29:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-18 18:29:55,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:29:55,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34450387] [2022-03-18 18:29:55,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:29:55,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404205360] [2022-03-18 18:29:55,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404205360] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:29:55,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 18:29:55,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-03-18 18:29:55,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266341899] [2022-03-18 18:29:55,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 18:29:55,228 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 18:29:55,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:29:55,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 18:29:55,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-18 18:29:55,229 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-03-18 18:29:55,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:29:55,282 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2022-03-18 18:29:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 18:29:55,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 57 [2022-03-18 18:29:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:29:55,283 INFO L225 Difference]: With dead ends: 77 [2022-03-18 18:29:55,283 INFO L226 Difference]: Without dead ends: 77 [2022-03-18 18:29:55,283 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-18 18:29:55,284 INFO L912 BasicCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 18:29:55,284 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 134 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 18:29:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-03-18 18:29:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-03-18 18:29:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 15 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 18:29:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2022-03-18 18:29:55,304 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 57 [2022-03-18 18:29:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:29:55,304 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2022-03-18 18:29:55,304 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-03-18 18:29:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2022-03-18 18:29:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-18 18:29:55,305 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 18:29:55,305 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 18:29:55,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 18:29:55,505 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:55,506 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 18:29:55,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 18:29:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1739644753, now seen corresponding path program 3 times [2022-03-18 18:29:55,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 18:29:55,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218110843] [2022-03-18 18:29:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 18:29:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 18:29:55,514 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 18:29:55,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861894112] [2022-03-18 18:29:55,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 18:29:55,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:29:55,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 18:29:55,517 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 18:29:55,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 18:29:55,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-18 18:29:55,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 18:29:55,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-18 18:29:55,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 18:29:56,900 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:29:56,903 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:29:56,905 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:30:06,117 WARN L833 $PredicateComparison]: unable to prove that (and (let ((.cse3 (+ c_main_~X~0 1)) (.cse2 (+ (* (- 1) c_main_~Y~0) (div (+ c_main_~v~0 c_main_~X~0) 2) (* c_main_~X~0 c_main_~y~0))) (.cse0 (= c_main_~Y~0 0)) (.cse4 (= (mod (+ (* 2 c_main_~X~0 c_main_~y~0) c_main_~v~0 c_main_~X~0) 2) 0))) (or (let ((.cse1 (div .cse2 c_main_~Y~0))) (and (not .cse0) (not (<= .cse1 c_main_~X~0)) (= (mod .cse2 c_main_~Y~0) 0) (= c_main_~xy~0 (* c_main_~y~0 .cse1)) (<= .cse1 .cse3) (= c_main_~yx~0 (* c_main_~Y~0 .cse1)) .cse4)) (and (let ((.cse6 (= c_main_~y~0 0))) (or (let ((.cse5 (div c_main_~xy~0 c_main_~y~0))) (and (<= .cse5 .cse3) (= (mod c_main_~xy~0 c_main_~y~0) 0) (not .cse6) (< c_main_~X~0 .cse5))) (and .cse6 (= c_main_~xy~0 0)))) (= 0 .cse2) .cse0 (= c_main_~yx~0 0) .cse4))) (<= 0 c_main_~X~0) (<= c_main_~X~0 50) (< c_main_~v~0 (* 2 c_main_~Y~0)) (<= c_main_~Y~0 50) (<= 0 c_main_~Y~0)) is different from false [2022-03-18 18:30:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-18 18:30:16,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 18:30:16,922 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:30:17,881 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 18:30:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-18 18:30:44,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 18:30:44,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218110843] [2022-03-18 18:30:44,341 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 18:30:44,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861894112] [2022-03-18 18:30:44,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861894112] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 18:30:44,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 18:30:44,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2022-03-18 18:30:44,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500583213] [2022-03-18 18:30:44,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-18 18:30:44,342 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-18 18:30:44,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 18:30:44,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-18 18:30:44,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=4, NotChecked=44, Total=600 [2022-03-18 18:30:44,343 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-03-18 18:30:52,330 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse8 (* 2 c_main_~Y~0)) (.cse7 (* c_main_~X~0 c_main_~y~0)) (.cse3 (+ c_main_~X~0 1))) (and (let ((.cse2 (+ (* (- 1) c_main_~Y~0) (div (+ c_main_~v~0 c_main_~X~0) 2) .cse7)) (.cse0 (= c_main_~Y~0 0)) (.cse4 (= (mod (+ (* 2 c_main_~X~0 c_main_~y~0) c_main_~v~0 c_main_~X~0) 2) 0))) (or (let ((.cse1 (div .cse2 c_main_~Y~0))) (and (not .cse0) (not (<= .cse1 c_main_~X~0)) (= (mod .cse2 c_main_~Y~0) 0) (= c_main_~xy~0 (* c_main_~y~0 .cse1)) (<= .cse1 .cse3) (= c_main_~yx~0 (* c_main_~Y~0 .cse1)) .cse4)) (and (let ((.cse6 (= c_main_~y~0 0))) (or (let ((.cse5 (div c_main_~xy~0 c_main_~y~0))) (and (<= .cse5 .cse3) (= (mod c_main_~xy~0 c_main_~y~0) 0) (not .cse6) (< c_main_~X~0 .cse5))) (and .cse6 (= c_main_~xy~0 0)))) (= 0 .cse2) .cse0 (= c_main_~yx~0 0) .cse4))) (<= 0 c_main_~X~0) (<= c_main_~X~0 50) (not (<= c_main_~x~0 c_main_~X~0)) (= (+ (* c_main_~xy~0 2) c_main_~v~0 c_main_~X~0) (+ (* c_main_~yx~0 2) (* 2 c_main_~y~0) .cse8)) (< c_main_~v~0 .cse8) (<= c_main_~Y~0 50) (<= 0 c_main_~Y~0) (= (+ (* 2 (* c_main_~Y~0 c_main_~x~0)) .cse8) (+ (* 2 .cse7) c_main_~v~0 c_main_~X~0)) (<= c_main_~x~0 .cse3))) is different from false [2022-03-18 18:30:52,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 18:30:52,407 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2022-03-18 18:30:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-18 18:30:52,407 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 57 [2022-03-18 18:30:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 18:30:52,408 INFO L225 Difference]: With dead ends: 78 [2022-03-18 18:30:52,408 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 18:30:52,408 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=186, Invalid=873, Unknown=5, NotChecked=126, Total=1190 [2022-03-18 18:30:52,409 INFO L912 BasicCegarLoop]: 15 mSDtfsCounter, 41 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 18:30:52,409 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 152 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 168 Invalid, 0 Unknown, 68 Unchecked, 0.5s Time] [2022-03-18 18:30:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 18:30:52,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 18:30:52,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-18 18:30:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 18:30:52,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2022-03-18 18:30:52,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 18:30:52,410 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 18:30:52,410 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-03-18 18:30:52,410 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 18:30:52,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 18:30:52,412 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 18:30:52,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 18:30:52,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 18:30:52,635 INFO L718 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-03-18 18:30:52,636 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 18:30:52,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 06:30:52 BasicIcfg [2022-03-18 18:30:52,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 18:30:52,642 INFO L158 Benchmark]: Toolchain (without parser) took 82883.78ms. Allocated memory was 228.6MB in the beginning and 308.3MB in the end (delta: 79.7MB). Free memory was 177.8MB in the beginning and 232.5MB in the end (delta: -54.7MB). Peak memory consumption was 25.4MB. Max. memory is 8.0GB. [2022-03-18 18:30:52,643 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 228.6MB. Free memory was 194.0MB in the beginning and 193.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 18:30:52,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.66ms. Allocated memory is still 228.6MB. Free memory was 177.7MB in the beginning and 204.1MB in the end (delta: -26.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-18 18:30:52,643 INFO L158 Benchmark]: Boogie Preprocessor took 17.12ms. Allocated memory is still 228.6MB. Free memory was 204.1MB in the beginning and 202.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 18:30:52,643 INFO L158 Benchmark]: RCFGBuilder took 192.49ms. Allocated memory is still 228.6MB. Free memory was 202.8MB in the beginning and 191.9MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 18:30:52,643 INFO L158 Benchmark]: IcfgTransformer took 34.52ms. Allocated memory is still 228.6MB. Free memory was 191.9MB in the beginning and 190.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 18:30:52,643 INFO L158 Benchmark]: TraceAbstraction took 82458.35ms. Allocated memory was 228.6MB in the beginning and 308.3MB in the end (delta: 79.7MB). Free memory was 190.3MB in the beginning and 232.5MB in the end (delta: -42.2MB). Peak memory consumption was 39.0MB. Max. memory is 8.0GB. [2022-03-18 18:30:52,644 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 228.6MB. Free memory was 194.0MB in the beginning and 193.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 177.66ms. Allocated memory is still 228.6MB. Free memory was 177.7MB in the beginning and 204.1MB in the end (delta: -26.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.12ms. Allocated memory is still 228.6MB. Free memory was 204.1MB in the beginning and 202.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 192.49ms. Allocated memory is still 228.6MB. Free memory was 202.8MB in the beginning and 191.9MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 34.52ms. Allocated memory is still 228.6MB. Free memory was 191.9MB in the beginning and 190.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 82458.35ms. Allocated memory was 228.6MB in the beginning and 308.3MB in the end (delta: 79.7MB). Free memory was 190.3MB in the beginning and 232.5MB in the end (delta: -42.2MB). Peak memory consumption was 39.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 82.4s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 25.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 13.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 143 mSDsluCounter, 1234 SdHoareTripleChecker+Invalid, 13.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 137 IncrementalHoareTripleChecker+Unchecked, 1037 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 929 IncrementalHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 197 mSDtfsCounter, 929 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 646 GetRequests, 515 SyntacticMatches, 8 SemanticMatches, 123 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 33.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=7, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 31 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 54.4s InterpolantComputationTime, 336 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 612 ConstructedInterpolants, 6 QuantifiedInterpolants, 3260 SizeOfPredicates, 49 NumberOfNonLiveVariables, 873 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 389/480 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-18 18:30:52,795 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...