/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_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:02:38,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:02:38,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:02:38,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:02:38,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:02:38,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:02:38,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:02:38,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:02:38,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:02:38,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:02:38,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:02:38,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:02:38,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:02:38,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:02:38,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:02:38,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:02:38,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:02:38,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:02:38,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:02:38,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:02:38,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:02:38,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:02:38,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:02:38,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:02:38,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:02:38,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 19:02:38,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 19:02:38,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 19:02:38,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 19:02:38,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 19:02:38,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 19:02:38,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 19:02:38,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 19:02:38,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:02:38,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:02:38,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:02:38,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:02:38,970 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:02:38,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:02:38,971 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:02:38,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:02:38,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:02:38,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:02:38,973 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:02:38,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:02:38,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:02:38,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:02:38,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:02:38,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:02:38,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:02:38,975 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:02:38,975 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:02:38,975 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:02:38,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:02:38,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:02:38,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:02:38,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:02:38,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:02:38,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:02:38,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:02:38,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:02:38,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:02:38,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:02:38,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:02:38,978 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:02:38,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:02:38,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:02:38,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:02:38,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:02:38,979 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:02:38,979 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:02:39,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:02:39,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:02:39,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:02:39,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:02:39,255 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:02:39,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-10 19:02:39,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de48ee5eb/2268d9f444b544c8b73f95313998cdac/FLAGf8a28f524 [2022-01-10 19:02:39,712 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:02:39,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-10 19:02:39,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de48ee5eb/2268d9f444b544c8b73f95313998cdac/FLAGf8a28f524 [2022-01-10 19:02:40,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de48ee5eb/2268d9f444b544c8b73f95313998cdac [2022-01-10 19:02:40,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:02:40,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:02:40,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:02:40,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:02:40,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:02:40,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fedf4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40, skipping insertion in model container [2022-01-10 19:02:40,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:02:40,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:02:40,389 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[7979,7992] [2022-01-10 19:02:40,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:02:40,443 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:02:40,484 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[7979,7992] [2022-01-10 19:02:40,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:02:40,523 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:02:40,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40 WrapperNode [2022-01-10 19:02:40,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:02:40,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:02:40,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:02:40,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:02:40,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,582 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 613 [2022-01-10 19:02:40,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:02:40,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:02:40,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:02:40,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:02:40,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:02:40,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:02:40,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:02:40,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:02:40,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40" (1/1) ... [2022-01-10 19:02:40,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:02:40,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:02:40,673 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 19:02:40,703 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 19:02:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:02:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:02:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:02:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:02:40,840 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:02:40,842 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:02:41,425 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:02:41,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:02:41,431 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 19:02:41,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:02:41 BoogieIcfgContainer [2022-01-10 19:02:41,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:02:41,434 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:02:41,434 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:02:41,435 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:02:41,438 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:02:41" (1/1) ... [2022-01-10 19:02:41,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:02:41 BasicIcfg [2022-01-10 19:02:41,966 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:02:41,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:02:41,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:02:41,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:02:41,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:02:40" (1/4) ... [2022-01-10 19:02:41,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a6c5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:02:41, skipping insertion in model container [2022-01-10 19:02:41,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:02:40" (2/4) ... [2022-01-10 19:02:41,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a6c5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:02:41, skipping insertion in model container [2022-01-10 19:02:41,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:02:41" (3/4) ... [2022-01-10 19:02:41,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a6c5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:02:41, skipping insertion in model container [2022-01-10 19:02:41,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:02:41" (4/4) ... [2022-01-10 19:02:41,975 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 19:02:41,980 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:02:41,980 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:02:42,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:02:42,042 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 19:02:42,042 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:02:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7567567567567568) internal successors, (260), 149 states have internal predecessors, (260), 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 19:02:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 19:02:42,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:02:42,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:02:42,069 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:02:42,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:02:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -490617956, now seen corresponding path program 1 times [2022-01-10 19:02:42,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:02:42,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682157880] [2022-01-10 19:02:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:02:42,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:02:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:02:42,778 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 19:02:42,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:02:42,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682157880] [2022-01-10 19:02:42,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682157880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:02:42,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:02:42,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:02:42,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635830347] [2022-01-10 19:02:42,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:02:42,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:02:42,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:02:42,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:02:42,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:02:42,810 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7567567567567568) internal successors, (260), 149 states have internal predecessors, (260), 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 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 19:02:44,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:02:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:02:44,473 INFO L93 Difference]: Finished difference Result 295 states and 489 transitions. [2022-01-10 19:02:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:02:44,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-01-10 19:02:44,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:02:44,486 INFO L225 Difference]: With dead ends: 295 [2022-01-10 19:02:44,486 INFO L226 Difference]: Without dead ends: 225 [2022-01-10 19:02:44,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:02:44,491 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 122 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 19:02:44,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 548 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 19:02:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-10 19:02:44,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2022-01-10 19:02:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.445945945945946) internal successors, (321), 222 states have internal predecessors, (321), 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 19:02:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 321 transitions. [2022-01-10 19:02:44,574 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 321 transitions. Word has length 76 [2022-01-10 19:02:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:02:44,574 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 321 transitions. [2022-01-10 19:02:44,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 19:02:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 321 transitions. [2022-01-10 19:02:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 19:02:44,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:02:44,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:02:44,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:02:44,577 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:02:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:02:44,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1329387357, now seen corresponding path program 1 times [2022-01-10 19:02:44,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:02:44,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237922801] [2022-01-10 19:02:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:02:44,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:02:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:02:45,129 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 19:02:45,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:02:45,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237922801] [2022-01-10 19:02:45,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237922801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:02:45,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:02:45,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:02:45,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295093316] [2022-01-10 19:02:45,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:02:45,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:02:45,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:02:45,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:02:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:02:45,132 INFO L87 Difference]: Start difference. First operand 223 states and 321 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 19:02:47,618 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:02:50,656 WARN L534 Checker$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 19:02:52,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:02:57,454 WARN L534 Checker$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 19:02:57,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:02:57,619 INFO L93 Difference]: Finished difference Result 1384 states and 2125 transitions. [2022-01-10 19:02:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:02:57,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 78 [2022-01-10 19:02:57,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:02:57,627 INFO L225 Difference]: With dead ends: 1384 [2022-01-10 19:02:57,627 INFO L226 Difference]: Without dead ends: 1203 [2022-01-10 19:02:57,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 19:02:57,630 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1528 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-01-10 19:02:57,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 1326 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 725 Invalid, 4 Unknown, 0 Unchecked, 11.8s Time] [2022-01-10 19:02:57,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-01-10 19:02:57,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 552. [2022-01-10 19:02:57,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 1.5045372050816697) internal successors, (829), 551 states have internal predecessors, (829), 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 19:02:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 829 transitions. [2022-01-10 19:02:57,778 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 829 transitions. Word has length 78 [2022-01-10 19:02:57,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:02:57,779 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 829 transitions. [2022-01-10 19:02:57,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 19:02:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 829 transitions. [2022-01-10 19:02:57,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 19:02:57,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:02:57,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:02:57,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:02:57,782 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:02:57,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:02:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash 86489708, now seen corresponding path program 1 times [2022-01-10 19:02:57,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:02:57,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632308618] [2022-01-10 19:02:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:02:57,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:02:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:02:58,416 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 19:02:58,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:02:58,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632308618] [2022-01-10 19:02:58,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632308618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:02:58,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:02:58,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:02:58,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971508519] [2022-01-10 19:02:58,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:02:58,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:02:58,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:02:58,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:02:58,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:02:58,419 INFO L87 Difference]: Start difference. First operand 552 states and 829 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 19:03:01,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:03:04,310 WARN L534 Checker$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 19:03:06,483 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 19:03:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:03:10,027 INFO L93 Difference]: Finished difference Result 2897 states and 4480 transitions. [2022-01-10 19:03:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:03:10,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 79 [2022-01-10 19:03:10,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:03:10,039 INFO L225 Difference]: With dead ends: 2897 [2022-01-10 19:03:10,039 INFO L226 Difference]: Without dead ends: 2459 [2022-01-10 19:03:10,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 19:03:10,042 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1466 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:03:10,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 1242 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 684 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2022-01-10 19:03:10,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2022-01-10 19:03:10,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 1479. [2022-01-10 19:03:10,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1478 states have (on average 1.5297699594046008) internal successors, (2261), 1478 states have internal predecessors, (2261), 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 19:03:10,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2261 transitions. [2022-01-10 19:03:10,615 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2261 transitions. Word has length 79 [2022-01-10 19:03:10,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:03:10,615 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 2261 transitions. [2022-01-10 19:03:10,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 19:03:10,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2261 transitions. [2022-01-10 19:03:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 19:03:10,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:03:10,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:03:10,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:03:10,620 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:03:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:03:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash 848482701, now seen corresponding path program 1 times [2022-01-10 19:03:10,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:03:10,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358339946] [2022-01-10 19:03:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:03:10,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:03:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:03:11,166 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 19:03:11,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:03:11,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358339946] [2022-01-10 19:03:11,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358339946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:03:11,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:03:11,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:03:11,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26701802] [2022-01-10 19:03:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:03:11,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:03:11,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:03:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:03:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:03:11,168 INFO L87 Difference]: Start difference. First operand 1479 states and 2261 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 19:03:14,904 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 19:03:17,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:03:22,987 WARN L534 Checker$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 19:03:23,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:03:23,287 INFO L93 Difference]: Finished difference Result 5894 states and 9152 transitions. [2022-01-10 19:03:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 19:03:23,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 79 [2022-01-10 19:03:23,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:03:23,305 INFO L225 Difference]: With dead ends: 5894 [2022-01-10 19:03:23,306 INFO L226 Difference]: Without dead ends: 4905 [2022-01-10 19:03:23,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 19:03:23,308 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1515 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-01-10 19:03:23,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1515 Valid, 1304 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 724 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2022-01-10 19:03:23,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4905 states. [2022-01-10 19:03:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4905 to 1289. [2022-01-10 19:03:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1288 states have (on average 1.5287267080745341) internal successors, (1969), 1288 states have internal predecessors, (1969), 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 19:03:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1969 transitions. [2022-01-10 19:03:23,964 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1969 transitions. Word has length 79 [2022-01-10 19:03:23,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:03:23,965 INFO L470 AbstractCegarLoop]: Abstraction has 1289 states and 1969 transitions. [2022-01-10 19:03:23,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 19:03:23,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1969 transitions. [2022-01-10 19:03:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:03:23,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:03:23,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:03:23,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:03:23,969 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:03:23,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:03:23,969 INFO L85 PathProgramCache]: Analyzing trace with hash 973361246, now seen corresponding path program 1 times [2022-01-10 19:03:23,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:03:23,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324745567] [2022-01-10 19:03:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:03:23,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:03:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:03:24,462 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 19:03:24,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:03:24,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324745567] [2022-01-10 19:03:24,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324745567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:03:24,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:03:24,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:03:24,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108301015] [2022-01-10 19:03:24,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:03:24,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 19:03:24,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:03:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 19:03:24,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:03:24,465 INFO L87 Difference]: Start difference. First operand 1289 states and 1969 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 19:03:27,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:03:29,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:03:31,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:03:34,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:03:38,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:03:40,983 WARN L534 Checker$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 19:03:45,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:03:47,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:03:49,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []