/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:34:02,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:34:02,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:34:02,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:34:02,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:34:02,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:34:02,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:34:02,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:34:02,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:34:02,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:34:02,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:34:02,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:34:02,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:34:02,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:34:02,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:34:02,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:34:02,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:34:02,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:34:02,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:34:02,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:34:02,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:34:02,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:34:02,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:34:02,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:34:02,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:34:02,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:34:02,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:34:02,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:34:02,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:34:02,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:34:02,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:34:02,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:34:02,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:34:02,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:34:02,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:34:03,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:34:03,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:34:03,031 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:34:03,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:34:03,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:34:03,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:34:03,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:34:03,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:34:03,033 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:34:03,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:34:03,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:34:03,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:34:03,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:34:03,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:34:03,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:34:03,034 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:34:03,034 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:34:03,034 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:34:03,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:34:03,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:34:03,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:34:03,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:34:03,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:34:03,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:34:03,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:34:03,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:34:03,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:34:03,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:34:03,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:34:03,038 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:34:03,039 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:34:03,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:34:03,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:34:03,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:34:03,041 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:34:03,041 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:34:03,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:34:03,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:34:03,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:34:03,281 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:34:03,282 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:34:03,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound20.c [2022-01-10 20:34:03,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b481b03d/1bbf87fdc11d43e3bbbec34cd240999d/FLAG3d5afe791 [2022-01-10 20:34:03,751 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:34:03,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound20.c [2022-01-10 20:34:03,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b481b03d/1bbf87fdc11d43e3bbbec34cd240999d/FLAG3d5afe791 [2022-01-10 20:34:04,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b481b03d/1bbf87fdc11d43e3bbbec34cd240999d [2022-01-10 20:34:04,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:34:04,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:34:04,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:34:04,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:34:04,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:34:04,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574188c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04, skipping insertion in model container [2022-01-10 20:34:04,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:34:04,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:34:04,347 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/dijkstra-u_valuebound20.c[525,538] [2022-01-10 20:34:04,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:34:04,408 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:34:04,418 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/dijkstra-u_valuebound20.c[525,538] [2022-01-10 20:34:04,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:34:04,445 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:34:04,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04 WrapperNode [2022-01-10 20:34:04,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:34:04,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:34:04,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:34:04,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:34:04,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,493 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 104 [2022-01-10 20:34:04,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:34:04,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:34:04,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:34:04,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:34:04,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:34:04,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:34:04,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:34:04,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:34:04,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04" (1/1) ... [2022-01-10 20:34:04,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:34:04,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:04,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 20:34:04,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 20:34:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:34:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:34:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:34:04,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:34:04,641 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:34:04,643 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:34:06,482 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:34:06,486 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:34:06,487 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 20:34:06,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:34:06 BoogieIcfgContainer [2022-01-10 20:34:06,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:34:06,489 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:34:06,489 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:34:06,490 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:34:06,493 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:34:06" (1/1) ... [2022-01-10 20:34:06,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:34:06 BasicIcfg [2022-01-10 20:34:06,556 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:34:06,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:34:06,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:34:06,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:34:06,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:34:04" (1/4) ... [2022-01-10 20:34:06,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f910d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:34:06, skipping insertion in model container [2022-01-10 20:34:06,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:04" (2/4) ... [2022-01-10 20:34:06,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f910d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:34:06, skipping insertion in model container [2022-01-10 20:34:06,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:34:06" (3/4) ... [2022-01-10 20:34:06,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f910d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:34:06, skipping insertion in model container [2022-01-10 20:34:06,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:34:06" (4/4) ... [2022-01-10 20:34:06,563 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound20.cTransformedIcfg [2022-01-10 20:34:06,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:34:06,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-01-10 20:34:06,602 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:34:06,608 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 20:34:06,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-01-10 20:34:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 50 states have internal predecessors, (68), 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) [2022-01-10 20:34:06,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 20:34:06,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:06,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:06,625 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 20:34:06,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:06,631 INFO L85 PathProgramCache]: Analyzing trace with hash 499700079, now seen corresponding path program 1 times [2022-01-10 20:34:06,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:06,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469933423] [2022-01-10 20:34:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:06,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:06,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:06,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469933423] [2022-01-10 20:34:06,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469933423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:06,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:06,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:34:06,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053468210] [2022-01-10 20:34:06,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:06,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:34:06,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:06,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:34:06,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:34:06,828 INFO L87 Difference]: Start difference. First operand has 51 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 50 states have internal predecessors, (68), 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-01-10 20:34:06,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:06,855 INFO L93 Difference]: Finished difference Result 99 states and 132 transitions. [2022-01-10 20:34:06,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:34:06,857 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) Word has length 10 [2022-01-10 20:34:06,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:06,863 INFO L225 Difference]: With dead ends: 99 [2022-01-10 20:34:06,863 INFO L226 Difference]: Without dead ends: 47 [2022-01-10 20:34:06,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:34:06,869 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:06,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:34:06,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-10 20:34:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-01-10 20:34:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 46 states have internal predecessors, (49), 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) [2022-01-10 20:34:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2022-01-10 20:34:06,905 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 10 [2022-01-10 20:34:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:06,906 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2022-01-10 20:34:06,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-01-10 20:34:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2022-01-10 20:34:06,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 20:34:06,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:06,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:06,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:34:06,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 20:34:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1687722824, now seen corresponding path program 1 times [2022-01-10 20:34:06,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:06,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081289117] [2022-01-10 20:34:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:06,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:07,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:07,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081289117] [2022-01-10 20:34:07,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081289117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:07,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:07,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:34:07,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357418098] [2022-01-10 20:34:07,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:07,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:34:07,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:34:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:34:07,254 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-01-10 20:34:09,474 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 [] [2022-01-10 20:34:12,523 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 [] [2022-01-10 20:34:12,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:12,795 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2022-01-10 20:34:12,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:34:12,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) Word has length 11 [2022-01-10 20:34:12,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:12,797 INFO L225 Difference]: With dead ends: 88 [2022-01-10 20:34:12,797 INFO L226 Difference]: Without dead ends: 86 [2022-01-10 20:34:12,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:34:12,799 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 63 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:12,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 115 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 70 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-01-10 20:34:12,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-10 20:34:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 51. [2022-01-10 20:34:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 50 states have internal predecessors, (54), 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) [2022-01-10 20:34:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-01-10 20:34:12,821 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 11 [2022-01-10 20:34:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:12,822 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-01-10 20:34:12,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-01-10 20:34:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-01-10 20:34:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 20:34:12,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:12,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:12,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:34:12,827 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 20:34:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:12,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1595966355, now seen corresponding path program 1 times [2022-01-10 20:34:12,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:12,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770000356] [2022-01-10 20:34:12,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:12,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:12,849 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:12,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586800947] [2022-01-10 20:34:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:12,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:12,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:12,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:12,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 20:34:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:12,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 20:34:12,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:13,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:34:13,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:13,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770000356] [2022-01-10 20:34:13,331 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:34:13,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586800947] [2022-01-10 20:34:13,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586800947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:13,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:13,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 20:34:13,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385248782] [2022-01-10 20:34:13,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:13,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:34:13,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:34:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:34:13,335 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-01-10 20:34:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:13,903 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2022-01-10 20:34:13,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:34:13,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) Word has length 13 [2022-01-10 20:34:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:13,905 INFO L225 Difference]: With dead ends: 113 [2022-01-10 20:34:13,905 INFO L226 Difference]: Without dead ends: 70 [2022-01-10 20:34:13,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 20:34:13,906 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 69 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:13,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 106 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 20:34:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-10 20:34:13,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-01-10 20:34:13,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 64 states have internal predecessors, (69), 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) [2022-01-10 20:34:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2022-01-10 20:34:13,925 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 13 [2022-01-10 20:34:13,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:13,926 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2022-01-10 20:34:13,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-01-10 20:34:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-01-10 20:34:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 20:34:13,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:13,929 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:13,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:34:14,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:14,132 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 20:34:14,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:14,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1570236861, now seen corresponding path program 1 times [2022-01-10 20:34:14,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:14,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383748089] [2022-01-10 20:34:14,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:14,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:14,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:14,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383748089] [2022-01-10 20:34:14,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383748089] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:34:14,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371316865] [2022-01-10 20:34:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:14,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:14,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:14,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:14,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 20:34:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:14,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 20:34:14,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:14,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:34:14,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371316865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:14,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 20:34:14,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-01-10 20:34:14,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402165912] [2022-01-10 20:34:14,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:14,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:34:14,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:14,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:34:14,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:34:14,760 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-01-10 20:34:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:15,835 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2022-01-10 20:34:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:34:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) Word has length 13 [2022-01-10 20:34:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:15,838 INFO L225 Difference]: With dead ends: 142 [2022-01-10 20:34:15,838 INFO L226 Difference]: Without dead ends: 140 [2022-01-10 20:34:15,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:34:15,839 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 150 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:15,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 143 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 20:34:15,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-10 20:34:15,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 67. [2022-01-10 20:34:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 66 states have internal predecessors, (71), 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) [2022-01-10 20:34:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-01-10 20:34:15,853 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 13 [2022-01-10 20:34:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:15,853 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-01-10 20:34:15,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-01-10 20:34:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-01-10 20:34:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 20:34:15,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:15,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:15,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 20:34:16,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 20:34:16,064 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 20:34:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:16,064 INFO L85 PathProgramCache]: Analyzing trace with hash -420304494, now seen corresponding path program 1 times [2022-01-10 20:34:16,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:16,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598675417] [2022-01-10 20:34:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:16,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:16,088 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:16,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962881630] [2022-01-10 20:34:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:16,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:16,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:16,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:16,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 20:34:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:16,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:34:16,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:16,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:34:16,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:16,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598675417] [2022-01-10 20:34:16,386 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:34:16,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962881630] [2022-01-10 20:34:16,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962881630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:16,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:16,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:34:16,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89891083] [2022-01-10 20:34:16,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:16,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:34:16,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:16,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:34:16,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:34:16,388 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-01-10 20:34:17,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:17,586 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2022-01-10 20:34:17,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:34:17,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) Word has length 15 [2022-01-10 20:34:17,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:17,587 INFO L225 Difference]: With dead ends: 71 [2022-01-10 20:34:17,587 INFO L226 Difference]: Without dead ends: 51 [2022-01-10 20:34:17,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:34:17,588 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 15 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:17,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 86 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 20:34:17,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-10 20:34:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-01-10 20:34:17,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 50 states have internal predecessors, (53), 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) [2022-01-10 20:34:17,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2022-01-10 20:34:17,595 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 15 [2022-01-10 20:34:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:17,595 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2022-01-10 20:34:17,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-01-10 20:34:17,596 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2022-01-10 20:34:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 20:34:17,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:17,596 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:17,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 20:34:17,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:17,801 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 20:34:17,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1464064856, now seen corresponding path program 1 times [2022-01-10 20:34:17,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:17,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20318041] [2022-01-10 20:34:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:17,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:17,820 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:17,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564550477] [2022-01-10 20:34:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:17,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:17,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:17,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:17,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 20:34:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:17,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:34:17,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:18,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:34:18,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:18,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20318041] [2022-01-10 20:34:18,144 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:34:18,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564550477] [2022-01-10 20:34:18,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564550477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:18,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:18,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:34:18,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941837238] [2022-01-10 20:34:18,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:18,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:34:18,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:18,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:34:18,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:34:18,146 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-01-10 20:34:18,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:18,784 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2022-01-10 20:34:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:34:18,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) Word has length 15 [2022-01-10 20:34:18,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:18,786 INFO L225 Difference]: With dead ends: 55 [2022-01-10 20:34:18,786 INFO L226 Difference]: Without dead ends: 53 [2022-01-10 20:34:18,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:34:18,787 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:18,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 95 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 6 Unchecked, 0.6s Time] [2022-01-10 20:34:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-10 20:34:18,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-01-10 20:34:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.25) internal successors, (55), 52 states have internal predecessors, (55), 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) [2022-01-10 20:34:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2022-01-10 20:34:18,795 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 15 [2022-01-10 20:34:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:18,795 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2022-01-10 20:34:18,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-01-10 20:34:18,795 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2022-01-10 20:34:18,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 20:34:18,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:18,796 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:18,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 20:34:18,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:18,996 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 20:34:18,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:18,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1782984461, now seen corresponding path program 1 times [2022-01-10 20:34:18,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:18,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478658281] [2022-01-10 20:34:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:18,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:19,009 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:19,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926495520] [2022-01-10 20:34:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:19,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:19,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:19,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:19,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 20:34:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:19,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 20:34:19,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:34:19,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:34:19,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:19,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478658281] [2022-01-10 20:34:19,293 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:34:19,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926495520] [2022-01-10 20:34:19,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926495520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:19,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:19,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:34:19,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245568651] [2022-01-10 20:34:19,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:19,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:34:19,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:19,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:34:19,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:34:19,295 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-01-10 20:34:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:19,991 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2022-01-10 20:34:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:34:19,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) Word has length 17 [2022-01-10 20:34:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:19,992 INFO L225 Difference]: With dead ends: 83 [2022-01-10 20:34:19,992 INFO L226 Difference]: Without dead ends: 73 [2022-01-10 20:34:19,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:34:19,993 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:19,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 87 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 20:34:19,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-10 20:34:20,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2022-01-10 20:34:20,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 66 states have internal predecessors, (72), 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) [2022-01-10 20:34:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2022-01-10 20:34:20,005 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 17 [2022-01-10 20:34:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:20,005 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2022-01-10 20:34:20,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-01-10 20:34:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2022-01-10 20:34:20,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 20:34:20,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:20,006 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:20,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 20:34:20,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:20,206 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 20:34:20,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash -243845775, now seen corresponding path program 1 times [2022-01-10 20:34:20,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:20,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548807359] [2022-01-10 20:34:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:20,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:20,222 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:20,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459914662] [2022-01-10 20:34:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:20,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:20,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:20,224 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:20,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 20:34:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:20,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 20:34:20,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:20,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:34:20,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:20,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548807359] [2022-01-10 20:34:20,819 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:34:20,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459914662] [2022-01-10 20:34:20,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459914662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:20,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:20,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:34:20,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648720769] [2022-01-10 20:34:20,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:20,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:34:20,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:20,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:34:20,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:34:20,821 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-01-10 20:34:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:21,400 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-01-10 20:34:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:34:21,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) Word has length 19 [2022-01-10 20:34:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:21,401 INFO L225 Difference]: With dead ends: 69 [2022-01-10 20:34:21,401 INFO L226 Difference]: Without dead ends: 67 [2022-01-10 20:34:21,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:34:21,402 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:21,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 121 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 24 Unchecked, 0.6s Time] [2022-01-10 20:34:21,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-10 20:34:21,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-01-10 20:34:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 66 states have internal predecessors, (71), 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) [2022-01-10 20:34:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-01-10 20:34:21,411 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 19 [2022-01-10 20:34:21,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:21,411 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-01-10 20:34:21,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-01-10 20:34:21,412 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-01-10 20:34:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 20:34:21,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:21,412 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:21,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 20:34:21,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:21,628 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 20:34:21,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:21,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1363324375, now seen corresponding path program 1 times [2022-01-10 20:34:21,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:21,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491010784] [2022-01-10 20:34:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:21,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:21,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:21,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876521797] [2022-01-10 20:34:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:21,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:21,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:21,640 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:21,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 20:34:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:21,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 20:34:21,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:34:26,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:34:26,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:26,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491010784] [2022-01-10 20:34:26,800 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:34:26,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876521797] [2022-01-10 20:34:26,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876521797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:26,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:26,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:34:26,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148351409] [2022-01-10 20:34:26,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:26,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:34:26,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:26,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:34:26,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:34:26,801 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-01-10 20:34:31,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 20:34:33,982 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 [] [2022-01-10 20:34:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:34,545 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2022-01-10 20:34:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:34:34,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) Word has length 23 [2022-01-10 20:34:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:34,546 INFO L225 Difference]: With dead ends: 67 [2022-01-10 20:34:34,546 INFO L226 Difference]: Without dead ends: 65 [2022-01-10 20:34:34,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:34:34,557 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:34,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 52 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-01-10 20:34:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-10 20:34:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-01-10 20:34:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 64 states have internal predecessors, (68), 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) [2022-01-10 20:34:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2022-01-10 20:34:34,570 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 23 [2022-01-10 20:34:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:34,571 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2022-01-10 20:34:34,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-01-10 20:34:34,571 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2022-01-10 20:34:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 20:34:34,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:34,571 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:34,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-10 20:34:34,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:34,787 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-01-10 20:34:34,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:34,787 INFO L85 PathProgramCache]: Analyzing trace with hash 307282199, now seen corresponding path program 1 times [2022-01-10 20:34:34,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:34,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158680907] [2022-01-10 20:34:34,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:34,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:34,811 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:34,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841329374] [2022-01-10 20:34:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:34,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:34,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:34,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:34,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-10 20:34:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:35,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-10 20:34:35,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:35,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:34:56,432 WARN L228 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 20:35:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:35:02,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:35:02,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158680907] [2022-01-10 20:35:02,893 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:35:02,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841329374] [2022-01-10 20:35:02,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841329374] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:35:02,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:35:02,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-01-10 20:35:02,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961149557] [2022-01-10 20:35:02,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:35:02,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 20:35:02,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:35:02,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 20:35:02,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=118, Unknown=3, NotChecked=0, Total=156 [2022-01-10 20:35:02,895 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 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) [2022-01-10 20:35:04,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 20:35:07,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 20:35:09,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 20:35:11,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []