/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_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:02:26,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:02:26,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:02:26,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:02:26,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:02:26,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:02:26,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:02:26,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:02:26,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:02:26,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:02:26,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:02:26,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:02:26,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:02:26,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:02:26,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:02:26,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:02:26,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:02:26,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:02:26,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:02:26,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:02:26,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:02:26,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:02:26,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:02:26,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:02:26,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:02:26,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:02:26,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:02:26,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:02:26,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:02:26,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:02:26,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:02:26,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:02:26,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:02:26,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:02:26,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:02:26,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:02:26,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:02:26,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:02:26,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:02:26,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:02:26,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:02:26,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:02:26,412 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:02:26,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:02:26,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:02:26,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:02:26,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:02:26,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:02:26,414 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:02:26,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:02:26,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:02:26,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:02:26,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:02:26,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:02:26,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:02:26,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:02:26,415 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:02:26,415 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:02:26,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:02:26,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:02:26,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:02:26,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:02:26,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:02:26,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:02:26,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:02:26,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:02:26,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:02:26,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:02:26,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:02:26,417 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:02:26,417 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:02:26,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:02:26,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:02:26,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:02:26,418 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:02:26,418 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:02:26,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:02:26,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:02:26,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:02:26,590 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:02:26,592 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:02:26,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:02:26,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/458f0bd5e/26b1f8e2fc724de2a062808cc98af88a/FLAG01fe233ae [2022-01-10 13:02:26,991 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:02:26,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:02:26,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/458f0bd5e/26b1f8e2fc724de2a062808cc98af88a/FLAG01fe233ae [2022-01-10 13:02:27,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/458f0bd5e/26b1f8e2fc724de2a062808cc98af88a [2022-01-10 13:02:27,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:02:27,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:02:27,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:02:27,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:02:27,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:02:27,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1aaed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27, skipping insertion in model container [2022-01-10 13:02:27,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:02:27,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:02:27,288 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-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-01-10 13:02:27,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:02:27,338 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:02:27,366 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-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-01-10 13:02:27,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:02:27,397 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:02:27,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27 WrapperNode [2022-01-10 13:02:27,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:02:27,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:02:27,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:02:27,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:02:27,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,441 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 547 [2022-01-10 13:02:27,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:02:27,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:02:27,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:02:27,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:02:27,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:02:27,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:02:27,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:02:27,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:02:27,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:27,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:02:27,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:02:27,518 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 13:02:27,523 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 13:02:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:02:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:02:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:02:27,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:02:27,630 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:02:27,631 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:02:27,984 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:02:27,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:02:27,989 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:02:27,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:02:27 BoogieIcfgContainer [2022-01-10 13:02:27,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:02:27,991 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:02:27,991 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:02:27,992 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:02:27,994 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:02:27" (1/1) ... [2022-01-10 13:02:28,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:02:28 BasicIcfg [2022-01-10 13:02:28,348 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:02:28,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:02:28,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:02:28,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:02:28,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:02:27" (1/4) ... [2022-01-10 13:02:28,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcdfdaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:02:28, skipping insertion in model container [2022-01-10 13:02:28,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:02:27" (2/4) ... [2022-01-10 13:02:28,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcdfdaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:02:28, skipping insertion in model container [2022-01-10 13:02:28,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:02:27" (3/4) ... [2022-01-10 13:02:28,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcdfdaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:02:28, skipping insertion in model container [2022-01-10 13:02:28,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:02:28" (4/4) ... [2022-01-10 13:02:28,354 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 13:02:28,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:02:28,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:02:28,399 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:02:28,404 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 13:02:28,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:02:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 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 13:02:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 13:02:28,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:02:28,421 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] [2022-01-10 13:02:28,421 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:02:28,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:02:28,424 INFO L85 PathProgramCache]: Analyzing trace with hash 771276490, now seen corresponding path program 1 times [2022-01-10 13:02:28,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:02:28,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560399010] [2022-01-10 13:02:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:02:28,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:02:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:02:28,751 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 13:02:28,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:02:28,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560399010] [2022-01-10 13:02:28,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560399010] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:02:28,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:02:28,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:02:28,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662701502] [2022-01-10 13:02:28,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:02:28,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:02:28,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:02:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:02:28,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:02:28,775 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 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 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 13:02:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:02:29,196 INFO L93 Difference]: Finished difference Result 284 states and 462 transitions. [2022-01-10 13:02:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:02:29,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-01-10 13:02:29,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:02:29,205 INFO L225 Difference]: With dead ends: 284 [2022-01-10 13:02:29,205 INFO L226 Difference]: Without dead ends: 216 [2022-01-10 13:02:29,208 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 13:02:29,210 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 142 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:02:29,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 454 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 13:02:29,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-01-10 13:02:29,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2022-01-10 13:02:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.5023474178403755) internal successors, (320), 213 states have internal predecessors, (320), 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 13:02:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 320 transitions. [2022-01-10 13:02:29,296 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 320 transitions. Word has length 48 [2022-01-10 13:02:29,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:02:29,296 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 320 transitions. [2022-01-10 13:02:29,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 13:02:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 320 transitions. [2022-01-10 13:02:29,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 13:02:29,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:02:29,299 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] [2022-01-10 13:02:29,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:02:29,300 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:02:29,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:02:29,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1477549905, now seen corresponding path program 1 times [2022-01-10 13:02:29,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:02:29,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582437045] [2022-01-10 13:02:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:02:29,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:02:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:02:29,467 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 13:02:29,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:02:29,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582437045] [2022-01-10 13:02:29,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582437045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:02:29,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:02:29,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:02:29,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962307115] [2022-01-10 13:02:29,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:02:29,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:02:29,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:02:29,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:02:29,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:02:29,470 INFO L87 Difference]: Start difference. First operand 214 states and 320 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 13:02:29,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:02:29,549 INFO L93 Difference]: Finished difference Result 537 states and 823 transitions. [2022-01-10 13:02:29,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:02:29,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-01-10 13:02:29,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:02:29,553 INFO L225 Difference]: With dead ends: 537 [2022-01-10 13:02:29,553 INFO L226 Difference]: Without dead ends: 376 [2022-01-10 13:02:29,557 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 13:02:29,558 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 139 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:02:29,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 400 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:02:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-01-10 13:02:29,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2022-01-10 13:02:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.5013404825737264) internal successors, (560), 373 states have internal predecessors, (560), 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 13:02:29,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 560 transitions. [2022-01-10 13:02:29,615 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 560 transitions. Word has length 51 [2022-01-10 13:02:29,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:02:29,615 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 560 transitions. [2022-01-10 13:02:29,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 13:02:29,616 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 560 transitions. [2022-01-10 13:02:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 13:02:29,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:02:29,621 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] [2022-01-10 13:02:29,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:02:29,623 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:02:29,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:02:29,628 INFO L85 PathProgramCache]: Analyzing trace with hash -593815018, now seen corresponding path program 1 times [2022-01-10 13:02:29,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:02:29,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6369155] [2022-01-10 13:02:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:02:29,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:02:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:02:29,733 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 13:02:29,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:02:29,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6369155] [2022-01-10 13:02:29,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6369155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:02:29,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:02:29,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:02:29,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678248039] [2022-01-10 13:02:29,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:02:29,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:02:29,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:02:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:02:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:02:29,736 INFO L87 Difference]: Start difference. First operand 374 states and 560 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 13:02:29,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:02:29,810 INFO L93 Difference]: Finished difference Result 926 states and 1407 transitions. [2022-01-10 13:02:29,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:02:29,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-01-10 13:02:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:02:29,813 INFO L225 Difference]: With dead ends: 926 [2022-01-10 13:02:29,813 INFO L226 Difference]: Without dead ends: 647 [2022-01-10 13:02:29,814 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 13:02:29,814 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 143 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:02:29,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 392 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:02:29,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-01-10 13:02:29,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2022-01-10 13:02:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.4891304347826086) internal successors, (959), 644 states have internal predecessors, (959), 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 13:02:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 959 transitions. [2022-01-10 13:02:29,897 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 959 transitions. Word has length 51 [2022-01-10 13:02:29,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:02:29,898 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 959 transitions. [2022-01-10 13:02:29,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 13:02:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 959 transitions. [2022-01-10 13:02:29,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 13:02:29,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:02:29,901 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] [2022-01-10 13:02:29,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:02:29,901 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:02:29,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:02:29,902 INFO L85 PathProgramCache]: Analyzing trace with hash -260563599, now seen corresponding path program 1 times [2022-01-10 13:02:29,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:02:29,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999044103] [2022-01-10 13:02:29,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:02:29,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:02:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:02:30,006 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 13:02:30,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:02:30,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999044103] [2022-01-10 13:02:30,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999044103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:02:30,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:02:30,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:02:30,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800970614] [2022-01-10 13:02:30,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:02:30,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:02:30,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:02:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:02:30,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:02:30,008 INFO L87 Difference]: Start difference. First operand 645 states and 959 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 13:02:30,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:02:30,113 INFO L93 Difference]: Finished difference Result 1567 states and 2347 transitions. [2022-01-10 13:02:30,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:02:30,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-01-10 13:02:30,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:02:30,118 INFO L225 Difference]: With dead ends: 1567 [2022-01-10 13:02:30,118 INFO L226 Difference]: Without dead ends: 1101 [2022-01-10 13:02:30,119 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 13:02:30,125 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 130 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:02:30,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 392 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:02:30,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-01-10 13:02:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1099. [2022-01-10 13:02:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 1.46448087431694) internal successors, (1608), 1098 states have internal predecessors, (1608), 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 13:02:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1608 transitions. [2022-01-10 13:02:30,241 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1608 transitions. Word has length 51 [2022-01-10 13:02:30,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:02:30,241 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1608 transitions. [2022-01-10 13:02:30,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 13:02:30,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1608 transitions. [2022-01-10 13:02:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 13:02:30,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:02:30,242 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] [2022-01-10 13:02:30,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:02:30,243 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:02:30,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:02:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2137123270, now seen corresponding path program 1 times [2022-01-10 13:02:30,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:02:30,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332655224] [2022-01-10 13:02:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:02:30,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:02:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:02:30,477 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 13:02:30,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:02:30,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332655224] [2022-01-10 13:02:30,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332655224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:02:30,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:02:30,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:02:30,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946872998] [2022-01-10 13:02:30,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:02:30,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:02:30,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:02:30,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:02:30,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:02:30,479 INFO L87 Difference]: Start difference. First operand 1099 states and 1608 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 13:02:32,625 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 13:02:35,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:02:37,280 WARN L534 Checker$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 13:02:39,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:02:41,849 WARN L534 Checker$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 13:02:43,988 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 13:02:45,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:02:45,883 INFO L93 Difference]: Finished difference Result 7419 states and 11032 transitions. [2022-01-10 13:02:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 13:02:45,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 52 [2022-01-10 13:02:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:02:45,903 INFO L225 Difference]: With dead ends: 7419 [2022-01-10 13:02:45,904 INFO L226 Difference]: Without dead ends: 6479 [2022-01-10 13:02:45,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 13:02:45,907 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1173 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 26 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-01-10 13:02:45,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 1044 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 582 Invalid, 6 Unknown, 0 Unchecked, 14.3s Time] [2022-01-10 13:02:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6479 states. [2022-01-10 13:02:46,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6479 to 3621. [2022-01-10 13:02:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3620 states have (on average 1.4751381215469612) internal successors, (5340), 3620 states have internal predecessors, (5340), 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 13:02:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5340 transitions. [2022-01-10 13:02:46,530 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5340 transitions. Word has length 52 [2022-01-10 13:02:46,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:02:46,530 INFO L470 AbstractCegarLoop]: Abstraction has 3621 states and 5340 transitions. [2022-01-10 13:02:46,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 13:02:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5340 transitions. [2022-01-10 13:02:46,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 13:02:46,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:02:46,532 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] [2022-01-10 13:02:46,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:02:46,532 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:02:46,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:02:46,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1255833182, now seen corresponding path program 1 times [2022-01-10 13:02:46,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:02:46,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448440099] [2022-01-10 13:02:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:02:46,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:02:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:02:46,740 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 13:02:46,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:02:46,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448440099] [2022-01-10 13:02:46,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448440099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:02:46,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:02:46,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:02:46,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602128574] [2022-01-10 13:02:46,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:02:46,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:02:46,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:02:46,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:02:46,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:02:46,744 INFO L87 Difference]: Start difference. First operand 3621 states and 5340 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 13:02:48,898 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 13:02:51,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:02:54,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:02:56,232 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 13:03:02,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:03:02,193 INFO L93 Difference]: Finished difference Result 24647 states and 36331 transitions. [2022-01-10 13:03:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 13:03:02,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 52 [2022-01-10 13:03:02,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:03:02,251 INFO L225 Difference]: With dead ends: 24647 [2022-01-10 13:03:02,251 INFO L226 Difference]: Without dead ends: 21371 [2022-01-10 13:03:02,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 13:03:02,260 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 873 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-01-10 13:03:02,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 949 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 536 Invalid, 4 Unknown, 0 Unchecked, 9.9s Time] [2022-01-10 13:03:02,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21371 states. [2022-01-10 13:03:05,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21371 to 11234. [2022-01-10 13:03:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11234 states, 11233 states have (on average 1.4614083503961541) internal successors, (16416), 11233 states have internal predecessors, (16416), 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 13:03:05,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11234 states to 11234 states and 16416 transitions. [2022-01-10 13:03:05,537 INFO L78 Accepts]: Start accepts. Automaton has 11234 states and 16416 transitions. Word has length 52 [2022-01-10 13:03:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:03:05,537 INFO L470 AbstractCegarLoop]: Abstraction has 11234 states and 16416 transitions. [2022-01-10 13:03:05,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 13:03:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 11234 states and 16416 transitions. [2022-01-10 13:03:05,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 13:03:05,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:03:05,540 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] [2022-01-10 13:03:05,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:03:05,541 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:03:05,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:03:05,541 INFO L85 PathProgramCache]: Analyzing trace with hash 604338094, now seen corresponding path program 1 times [2022-01-10 13:03:05,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:03:05,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941216139] [2022-01-10 13:03:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:03:05,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:03:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:03:05,748 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 13:03:05,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:03:05,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941216139] [2022-01-10 13:03:05,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941216139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:03:05,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:03:05,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:03:05,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596201858] [2022-01-10 13:03:05,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:03:05,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:03:05,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:03:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:03:05,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:03:05,749 INFO L87 Difference]: Start difference. First operand 11234 states and 16416 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 13:03:07,923 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 13:03:10,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:03:12,150 WARN L534 Checker$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 13:03:15,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:03:17,643 WARN L534 Checker$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 13:03:20,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:03:22,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []