/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.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:01:56,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:01:56,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:01:56,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:01:56,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:01:56,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:01:56,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:01:56,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:01:56,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:01:56,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:01:56,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:01:56,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:01:56,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:01:56,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:01:56,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:01:56,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:01:56,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:01:56,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:01:56,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:01:56,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:01:56,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:01:56,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:01:56,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:01:56,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:01:56,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:01:56,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:01:56,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:01:56,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:01:56,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:01:56,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:01:56,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:01:56,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:01:56,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:01:56,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:01:56,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:01:56,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:01:56,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:01:56,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:01:56,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:01:56,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:01:56,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:01:56,404 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 13:01:56,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:01:56,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:01:56,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:01:56,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:01:56,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:01:56,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:01:56,435 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:01:56,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:01:56,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:01:56,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:01:56,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:01:56,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:01:56,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:01:56,437 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:01:56,437 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:01:56,437 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:01:56,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:01:56,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:01:56,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:01:56,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:01:56,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:01:56,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:01:56,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:01:56,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:01:56,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:01:56,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:01:56,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:01:56,438 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:01:56,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:01:56,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:01:56,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:01:56,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:01:56,440 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:01:56,440 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:01:56,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:01:56,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:01:56,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:01:56,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:01:56,690 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:01:56,690 INFO L432 ainManager$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.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 13:01:56,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e200e1939/adaba13fdd4e496bb66e10f3505fd550/FLAG32599c1ef [2022-01-10 13:01:57,137 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:01:57,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 13:01:57,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e200e1939/adaba13fdd4e496bb66e10f3505fd550/FLAG32599c1ef [2022-01-10 13:01:57,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e200e1939/adaba13fdd4e496bb66e10f3505fd550 [2022-01-10 13:01:57,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:01:57,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:01:57,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:01:57,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:01:57,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:01:57,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436e4db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57, skipping insertion in model container [2022-01-10 13:01:57,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:01:57,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:01:57,438 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.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2022-01-10 13:01:57,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:01:57,482 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:01:57,523 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.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2022-01-10 13:01:57,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:01:57,562 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:01:57,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57 WrapperNode [2022-01-10 13:01:57,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:01:57,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:01:57,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:01:57,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:01:57,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,636 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 310 [2022-01-10 13:01:57,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:01:57,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:01:57,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:01:57,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:01:57,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:01:57,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:01:57,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:01:57,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:01:57,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57" (1/1) ... [2022-01-10 13:01:57,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:01:57,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:01:57,725 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 13:01:57,740 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 13:01:57,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:01:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:01:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:01:57,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:01:57,844 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:01:57,845 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:01:58,086 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:01:58,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:01:58,091 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:01:58,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:01:58 BoogieIcfgContainer [2022-01-10 13:01:58,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:01:58,094 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:01:58,094 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:01:58,095 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:01:58,097 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:01:58" (1/1) ... [2022-01-10 13:01:58,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:01:58 BasicIcfg [2022-01-10 13:01:58,530 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:01:58,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:01:58,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:01:58,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:01:58,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:01:57" (1/4) ... [2022-01-10 13:01:58,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3b0d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:01:58, skipping insertion in model container [2022-01-10 13:01:58,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:01:57" (2/4) ... [2022-01-10 13:01:58,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3b0d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:01:58, skipping insertion in model container [2022-01-10 13:01:58,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:01:58" (3/4) ... [2022-01-10 13:01:58,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3b0d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:01:58, skipping insertion in model container [2022-01-10 13:01:58,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:01:58" (4/4) ... [2022-01-10 13:01:58,538 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 13:01:58,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:01:58,542 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:01:58,585 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:01:58,592 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 13:01:58,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:01:58,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 79 states have internal predecessors, (132), 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 13:01:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 13:01:58,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:01:58,615 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] [2022-01-10 13:01:58,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:01:58,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:01:58,623 INFO L85 PathProgramCache]: Analyzing trace with hash 121187160, now seen corresponding path program 1 times [2022-01-10 13:01:58,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:01:58,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504286708] [2022-01-10 13:01:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:01:58,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:01:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:01:58,990 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 13:01:58,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:01:58,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504286708] [2022-01-10 13:01:59,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504286708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:01:59,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:01:59,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:01:59,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897997216] [2022-01-10 13:01:59,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:01:59,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:01:59,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:01:59,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:01:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:01:59,035 INFO L87 Difference]: Start difference. First operand has 80 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 79 states have internal predecessors, (132), 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 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 13:01:59,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:01:59,109 INFO L93 Difference]: Finished difference Result 189 states and 302 transitions. [2022-01-10 13:01:59,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:01:59,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2022-01-10 13:01:59,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:01:59,119 INFO L225 Difference]: With dead ends: 189 [2022-01-10 13:01:59,119 INFO L226 Difference]: Without dead ends: 123 [2022-01-10 13:01:59,122 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 13:01:59,124 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 93 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:01:59,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 292 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:01:59,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-01-10 13:01:59,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2022-01-10 13:01:59,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.5) internal successors, (180), 120 states have internal predecessors, (180), 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 13:01:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 180 transitions. [2022-01-10 13:01:59,178 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 180 transitions. Word has length 37 [2022-01-10 13:01:59,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:01:59,179 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 180 transitions. [2022-01-10 13:01:59,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 13:01:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 180 transitions. [2022-01-10 13:01:59,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 13:01:59,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:01:59,182 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] [2022-01-10 13:01:59,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:01:59,182 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:01:59,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:01:59,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1109080726, now seen corresponding path program 1 times [2022-01-10 13:01:59,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:01:59,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598944769] [2022-01-10 13:01:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:01:59,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:01:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:01:59,348 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 13:01:59,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:01:59,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598944769] [2022-01-10 13:01:59,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598944769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:01:59,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:01:59,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:01:59,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707239780] [2022-01-10 13:01:59,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:01:59,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:01:59,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:01:59,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:01:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:01:59,356 INFO L87 Difference]: Start difference. First operand 121 states and 180 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 13:01:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:01:59,397 INFO L93 Difference]: Finished difference Result 291 states and 448 transitions. [2022-01-10 13:01:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:01:59,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2022-01-10 13:01:59,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:01:59,402 INFO L225 Difference]: With dead ends: 291 [2022-01-10 13:01:59,402 INFO L226 Difference]: Without dead ends: 190 [2022-01-10 13:01:59,403 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 13:01:59,404 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 74 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:01:59,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 238 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:01:59,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-01-10 13:01:59,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-01-10 13:01:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.5240641711229947) internal successors, (285), 187 states have internal predecessors, (285), 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 13:01:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 285 transitions. [2022-01-10 13:01:59,420 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 285 transitions. Word has length 37 [2022-01-10 13:01:59,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:01:59,421 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 285 transitions. [2022-01-10 13:01:59,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 13:01:59,421 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 285 transitions. [2022-01-10 13:01:59,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 13:01:59,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:01:59,422 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] [2022-01-10 13:01:59,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:01:59,422 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:01:59,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:01:59,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1257880835, now seen corresponding path program 1 times [2022-01-10 13:01:59,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:01:59,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634876439] [2022-01-10 13:01:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:01:59,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:01:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:01:59,566 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 13:01:59,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:01:59,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634876439] [2022-01-10 13:01:59,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634876439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:01:59,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:01:59,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:01:59,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075241581] [2022-01-10 13:01:59,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:01:59,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:01:59,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:01:59,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:01:59,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:01:59,570 INFO L87 Difference]: Start difference. First operand 188 states and 285 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 13:01:59,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:01:59,598 INFO L93 Difference]: Finished difference Result 460 states and 711 transitions. [2022-01-10 13:01:59,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:01:59,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2022-01-10 13:01:59,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:01:59,603 INFO L225 Difference]: With dead ends: 460 [2022-01-10 13:01:59,603 INFO L226 Difference]: Without dead ends: 292 [2022-01-10 13:01:59,609 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 13:01:59,613 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 69 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:01:59,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 223 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:01:59,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-01-10 13:01:59,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2022-01-10 13:01:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.5259515570934257) internal successors, (441), 289 states have internal predecessors, (441), 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 13:01:59,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 441 transitions. [2022-01-10 13:01:59,647 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 441 transitions. Word has length 38 [2022-01-10 13:01:59,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:01:59,647 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 441 transitions. [2022-01-10 13:01:59,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 13:01:59,648 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 441 transitions. [2022-01-10 13:01:59,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 13:01:59,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:01:59,649 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] [2022-01-10 13:01:59,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:01:59,649 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:01:59,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:01:59,649 INFO L85 PathProgramCache]: Analyzing trace with hash 755941111, now seen corresponding path program 1 times [2022-01-10 13:01:59,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:01:59,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514570269] [2022-01-10 13:01:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:01:59,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:01:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:01:59,859 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 13:01:59,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:01:59,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514570269] [2022-01-10 13:01:59,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514570269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:01:59,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:01:59,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:01:59,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330550920] [2022-01-10 13:01:59,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:01:59,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:01:59,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:01:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:01:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:01:59,861 INFO L87 Difference]: Start difference. First operand 290 states and 441 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 13:02:00,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:02:00,151 INFO L93 Difference]: Finished difference Result 1200 states and 1851 transitions. [2022-01-10 13:02:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:02:00,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2022-01-10 13:02:00,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:02:00,156 INFO L225 Difference]: With dead ends: 1200 [2022-01-10 13:02:00,157 INFO L226 Difference]: Without dead ends: 930 [2022-01-10 13:02:00,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:02:00,167 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 392 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:02:00,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 385 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:02:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-01-10 13:02:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 738. [2022-01-10 13:02:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 1.5318860244233379) internal successors, (1129), 737 states have internal predecessors, (1129), 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 13:02:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1129 transitions. [2022-01-10 13:02:00,320 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1129 transitions. Word has length 39 [2022-01-10 13:02:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:02:00,321 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 1129 transitions. [2022-01-10 13:02:00,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 13:02:00,321 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1129 transitions. [2022-01-10 13:02:00,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 13:02:00,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:02:00,322 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] [2022-01-10 13:02:00,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:02:00,323 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:02:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:02:00,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2139546479, now seen corresponding path program 1 times [2022-01-10 13:02:00,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:02:00,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150268851] [2022-01-10 13:02:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:02:00,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:02:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:02:00,579 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 13:02:00,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:02:00,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150268851] [2022-01-10 13:02:00,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150268851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:02:00,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:02:00,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:02:00,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223516095] [2022-01-10 13:02:00,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:02:00,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:02:00,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:02:00,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:02:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:02:00,581 INFO L87 Difference]: Start difference. First operand 738 states and 1129 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 13:02:01,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:02:01,424 INFO L93 Difference]: Finished difference Result 3142 states and 4837 transitions. [2022-01-10 13:02:01,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:02:01,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2022-01-10 13:02:01,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:02:01,435 INFO L225 Difference]: With dead ends: 3142 [2022-01-10 13:02:01,436 INFO L226 Difference]: Without dead ends: 2424 [2022-01-10 13:02:01,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:02:01,437 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 435 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:02:01,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 594 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 13:02:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-01-10 13:02:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1454. [2022-01-10 13:02:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1453 states have (on average 1.5065381968341363) internal successors, (2189), 1453 states have internal predecessors, (2189), 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 13:02:01,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2189 transitions. [2022-01-10 13:02:01,864 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2189 transitions. Word has length 41 [2022-01-10 13:02:01,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:02:01,865 INFO L470 AbstractCegarLoop]: Abstraction has 1454 states and 2189 transitions. [2022-01-10 13:02:01,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 13:02:01,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2189 transitions. [2022-01-10 13:02:01,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 13:02:01,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:02:01,877 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] [2022-01-10 13:02:01,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:02:01,877 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:02:01,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:02:01,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1900444844, now seen corresponding path program 1 times [2022-01-10 13:02:01,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:02:01,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120672620] [2022-01-10 13:02:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:02:01,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:02:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:02:01,995 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 13:02:01,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:02:01,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120672620] [2022-01-10 13:02:01,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120672620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:02:01,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:02:01,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:02:01,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154163905] [2022-01-10 13:02:01,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:02:01,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:02:01,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:02:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:02:01,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:02:01,998 INFO L87 Difference]: Start difference. First operand 1454 states and 2189 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 13:02:02,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:02:02,857 INFO L93 Difference]: Finished difference Result 2824 states and 4226 transitions. [2022-01-10 13:02:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:02:02,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2022-01-10 13:02:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:02:02,868 INFO L225 Difference]: With dead ends: 2824 [2022-01-10 13:02:02,869 INFO L226 Difference]: Without dead ends: 2822 [2022-01-10 13:02:02,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:02:02,870 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 248 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:02:02,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 390 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:02:02,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-01-10 13:02:03,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 1550. [2022-01-10 13:02:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 1.4751452550032278) internal successors, (2285), 1549 states have internal predecessors, (2285), 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 13:02:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2285 transitions. [2022-01-10 13:02:03,215 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2285 transitions. Word has length 42 [2022-01-10 13:02:03,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:02:03,216 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 2285 transitions. [2022-01-10 13:02:03,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 13:02:03,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2285 transitions. [2022-01-10 13:02:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 13:02:03,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:02:03,217 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] [2022-01-10 13:02:03,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:02:03,217 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:02:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:02:03,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1214742548, now seen corresponding path program 1 times [2022-01-10 13:02:03,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:02:03,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677003434] [2022-01-10 13:02:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:02:03,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:02:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:02:03,341 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 13:02:03,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:02:03,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677003434] [2022-01-10 13:02:03,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677003434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:02:03,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:02:03,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:02:03,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589958847] [2022-01-10 13:02:03,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:02:03,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:02:03,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:02:03,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:02:03,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:02:03,345 INFO L87 Difference]: Start difference. First operand 1550 states and 2285 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 13:02:05,418 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 13:02:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:02:06,229 INFO L93 Difference]: Finished difference Result 3812 states and 5625 transitions. [2022-01-10 13:02:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:02:06,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2022-01-10 13:02:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:02:06,239 INFO L225 Difference]: With dead ends: 3812 [2022-01-10 13:02:06,240 INFO L226 Difference]: Without dead ends: 2282 [2022-01-10 13:02:06,242 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 13:02:06,243 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 59 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:02:06,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 218 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 13:02:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2022-01-10 13:02:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2280. [2022-01-10 13:02:06,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2279 states have (on average 1.4633611232996928) internal successors, (3335), 2279 states have internal predecessors, (3335), 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 13:02:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3335 transitions. [2022-01-10 13:02:06,842 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3335 transitions. Word has length 43 [2022-01-10 13:02:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:02:06,843 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 3335 transitions. [2022-01-10 13:02:06,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 13:02:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3335 transitions. [2022-01-10 13:02:06,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 13:02:06,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:02:06,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:06,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:02:06,846 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:02:06,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:02:06,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1895048391, now seen corresponding path program 1 times [2022-01-10 13:02:06,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:02:06,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413209128] [2022-01-10 13:02:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:02:06,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:02:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:02:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 13:02:07,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:02:07,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413209128] [2022-01-10 13:02:07,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413209128] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 13:02:07,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621520119] [2022-01-10 13:02:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:02:07,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 13:02:07,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:02:07,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 13:02:07,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process