/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:41:07,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:41:07,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:41:07,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:41:07,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:41:07,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:41:07,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:41:07,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:41:07,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:41:07,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:41:07,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:41:07,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:41:07,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:41:07,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:41:07,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:41:07,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:41:07,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:41:07,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:41:07,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:41:07,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:41:07,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:41:07,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:41:07,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:41:07,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:41:07,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:41:07,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:41:07,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:41:07,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:41:07,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:41:07,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:41:07,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:41:07,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:41:07,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:41:07,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:41:07,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:41:07,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:41:07,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:41:07,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:41:07,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:41:07,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:41:07,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:41:07,551 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:41:07,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:41:07,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:41:07,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:41:07,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:41:07,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:41:07,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:41:07,586 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:41:07,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:41:07,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:41:07,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:41:07,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:41:07,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:41:07,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:41:07,587 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:41:07,587 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:41:07,587 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:41:07,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:41:07,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:41:07,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:41:07,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:41:07,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:41:07,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:41:07,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:41:07,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:41:07,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:41:07,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:41:07,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:41:07,590 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:41:07,590 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:41:07,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:41:07,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:41:07,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:41:07,592 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:41:07,592 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:41:07,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:41:07,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:41:07,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:41:07,858 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:41:07,858 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:41:07,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-11 00:41:07,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/819e2fb8e/e14714c01afc4f14978e7de2cb3d4a51/FLAGe9b7eca78 [2022-01-11 00:41:08,338 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:41:08,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-11 00:41:08,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/819e2fb8e/e14714c01afc4f14978e7de2cb3d4a51/FLAGe9b7eca78 [2022-01-11 00:41:08,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/819e2fb8e/e14714c01afc4f14978e7de2cb3d4a51 [2022-01-11 00:41:08,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:41:08,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:41:08,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:41:08,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:41:08,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:41:08,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:41:08" (1/1) ... [2022-01-11 00:41:08,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c1c7cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:08, skipping insertion in model container [2022-01-11 00:41:08,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:41:08" (1/1) ... [2022-01-11 00:41:08,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:41:08,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:41:09,027 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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2022-01-11 00:41:09,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:41:09,106 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:41:09,165 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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2022-01-11 00:41:09,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:41:09,201 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:41:09,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09 WrapperNode [2022-01-11 00:41:09,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:41:09,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:41:09,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:41:09,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:41:09,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09" (1/1) ... [2022-01-11 00:41:09,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09" (1/1) ... [2022-01-11 00:41:09,275 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 603 [2022-01-11 00:41:09,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:41:09,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:41:09,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:41:09,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:41:09,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09" (1/1) ... [2022-01-11 00:41:09,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09" (1/1) ... [2022-01-11 00:41:09,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09" (1/1) ... [2022-01-11 00:41:09,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09" (1/1) ... [2022-01-11 00:41:09,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09" (1/1) ... [2022-01-11 00:41:09,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09" (1/1) ... [2022-01-11 00:41:09,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09" (1/1) ... [2022-01-11 00:41:09,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:41:09,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:41:09,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:41:09,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:41:09,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09" (1/1) ... [2022-01-11 00:41:09,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:41:09,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:41:09,376 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) [2022-01-11 00:41:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:41:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:41:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:41:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:41:09,395 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 [2022-01-11 00:41:09,536 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:41:09,538 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:41:10,024 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:41:10,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:41:10,032 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:41:10,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:41:10 BoogieIcfgContainer [2022-01-11 00:41:10,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:41:10,034 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:41:10,034 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:41:10,040 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:41:10,042 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:41:10" (1/1) ... [2022-01-11 00:41:10,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:41:10 BasicIcfg [2022-01-11 00:41:10,513 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:41:10,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:41:10,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:41:10,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:41:10,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:41:08" (1/4) ... [2022-01-11 00:41:10,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec82a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:41:10, skipping insertion in model container [2022-01-11 00:41:10,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:41:09" (2/4) ... [2022-01-11 00:41:10,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec82a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:41:10, skipping insertion in model container [2022-01-11 00:41:10,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:41:10" (3/4) ... [2022-01-11 00:41:10,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec82a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:41:10, skipping insertion in model container [2022-01-11 00:41:10,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:41:10" (4/4) ... [2022-01-11 00:41:10,522 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 00:41:10,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:41:10,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:41:10,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:41:10,579 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 [2022-01-11 00:41:10,579 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:41:10,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 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) [2022-01-11 00:41:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-11 00:41:10,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:41:10,601 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] [2022-01-11 00:41:10,602 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:41:10,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:41:10,609 INFO L85 PathProgramCache]: Analyzing trace with hash -161418002, now seen corresponding path program 1 times [2022-01-11 00:41:10,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:41:10,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030729908] [2022-01-11 00:41:10,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:41:10,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:41:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:41:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:41:11,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:41:11,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030729908] [2022-01-11 00:41:11,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030729908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:41:11,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:41:11,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:41:11,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906075818] [2022-01-11 00:41:11,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:41:11,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:41:11,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:41:11,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:41:11,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:41:11,129 INFO L87 Difference]: Start difference. First operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 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 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-01-11 00:41:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:41:11,730 INFO L93 Difference]: Finished difference Result 310 states and 504 transitions. [2022-01-11 00:41:11,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:41:11,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2022-01-11 00:41:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:41:11,746 INFO L225 Difference]: With dead ends: 310 [2022-01-11 00:41:11,746 INFO L226 Difference]: Without dead ends: 237 [2022-01-11 00:41:11,749 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 [2022-01-11 00:41:11,754 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 158 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 00:41:11,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 505 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 00:41:11,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-01-11 00:41:11,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2022-01-11 00:41:11,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.4914529914529915) internal successors, (349), 234 states have internal predecessors, (349), 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) [2022-01-11 00:41:11,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 349 transitions. [2022-01-11 00:41:11,841 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 349 transitions. Word has length 50 [2022-01-11 00:41:11,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:41:11,842 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 349 transitions. [2022-01-11 00:41:11,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-01-11 00:41:11,843 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 349 transitions. [2022-01-11 00:41:11,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 00:41:11,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:41:11,846 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] [2022-01-11 00:41:11,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:41:11,846 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:41:11,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:41:11,847 INFO L85 PathProgramCache]: Analyzing trace with hash -280555919, now seen corresponding path program 1 times [2022-01-11 00:41:11,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:41:11,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787675794] [2022-01-11 00:41:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:41:11,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:41:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:41:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:41:12,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:41:12,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787675794] [2022-01-11 00:41:12,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787675794] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:41:12,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:41:12,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:41:12,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774305141] [2022-01-11 00:41:12,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:41:12,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:41:12,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:41:12,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:41:12,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:41:12,017 INFO L87 Difference]: Start difference. First operand 235 states and 349 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2022-01-11 00:41:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:41:12,110 INFO L93 Difference]: Finished difference Result 574 states and 871 transitions. [2022-01-11 00:41:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:41:12,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) Word has length 53 [2022-01-11 00:41:12,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:41:12,114 INFO L225 Difference]: With dead ends: 574 [2022-01-11 00:41:12,114 INFO L226 Difference]: Without dead ends: 397 [2022-01-11 00:41:12,120 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 [2022-01-11 00:41:12,121 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 158 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 420 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 [2022-01-11 00:41:12,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 420 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:41:12,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-01-11 00:41:12,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 395. [2022-01-11 00:41:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.4873096446700507) internal successors, (586), 394 states have internal predecessors, (586), 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) [2022-01-11 00:41:12,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 586 transitions. [2022-01-11 00:41:12,228 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 586 transitions. Word has length 53 [2022-01-11 00:41:12,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:41:12,228 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 586 transitions. [2022-01-11 00:41:12,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2022-01-11 00:41:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 586 transitions. [2022-01-11 00:41:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 00:41:12,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:41:12,236 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] [2022-01-11 00:41:12,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:41:12,238 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:41:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:41:12,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1943046454, now seen corresponding path program 1 times [2022-01-11 00:41:12,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:41:12,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989768166] [2022-01-11 00:41:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:41:12,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:41:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:41:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:41:12,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:41:12,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989768166] [2022-01-11 00:41:12,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989768166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:41:12,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:41:12,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:41:12,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273844847] [2022-01-11 00:41:12,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:41:12,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:41:12,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:41:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:41:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:41:12,385 INFO L87 Difference]: Start difference. First operand 395 states and 586 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2022-01-11 00:41:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:41:12,478 INFO L93 Difference]: Finished difference Result 979 states and 1471 transitions. [2022-01-11 00:41:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:41:12,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) Word has length 53 [2022-01-11 00:41:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:41:12,481 INFO L225 Difference]: With dead ends: 979 [2022-01-11 00:41:12,481 INFO L226 Difference]: Without dead ends: 684 [2022-01-11 00:41:12,486 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 [2022-01-11 00:41:12,490 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 157 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 434 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 [2022-01-11 00:41:12,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:41:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-01-11 00:41:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 682. [2022-01-11 00:41:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.474302496328928) internal successors, (1004), 681 states have internal predecessors, (1004), 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) [2022-01-11 00:41:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1004 transitions. [2022-01-11 00:41:12,588 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1004 transitions. Word has length 53 [2022-01-11 00:41:12,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:41:12,590 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 1004 transitions. [2022-01-11 00:41:12,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2022-01-11 00:41:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1004 transitions. [2022-01-11 00:41:12,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 00:41:12,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:41:12,593 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] [2022-01-11 00:41:12,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:41:12,593 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:41:12,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:41:12,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2018669423, now seen corresponding path program 1 times [2022-01-11 00:41:12,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:41:12,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710192763] [2022-01-11 00:41:12,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:41:12,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:41:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:41:12,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:41:12,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:41:12,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710192763] [2022-01-11 00:41:12,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710192763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:41:12,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:41:12,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:41:12,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634392050] [2022-01-11 00:41:12,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:41:12,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:41:12,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:41:12,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:41:12,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:41:12,733 INFO L87 Difference]: Start difference. First operand 682 states and 1004 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2022-01-11 00:41:12,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:41:12,891 INFO L93 Difference]: Finished difference Result 1668 states and 2468 transitions. [2022-01-11 00:41:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:41:12,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) Word has length 53 [2022-01-11 00:41:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:41:12,896 INFO L225 Difference]: With dead ends: 1668 [2022-01-11 00:41:12,896 INFO L226 Difference]: Without dead ends: 1170 [2022-01-11 00:41:12,897 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 [2022-01-11 00:41:12,902 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 144 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 434 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 [2022-01-11 00:41:12,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:41:12,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-01-11 00:41:13,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1168. [2022-01-11 00:41:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 1.4490145672664954) internal successors, (1691), 1167 states have internal predecessors, (1691), 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) [2022-01-11 00:41:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1691 transitions. [2022-01-11 00:41:13,063 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1691 transitions. Word has length 53 [2022-01-11 00:41:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:41:13,064 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 1691 transitions. [2022-01-11 00:41:13,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2022-01-11 00:41:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1691 transitions. [2022-01-11 00:41:13,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 00:41:13,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:41:13,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:41:13,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:41:13,067 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:41:13,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:41:13,068 INFO L85 PathProgramCache]: Analyzing trace with hash -841844666, now seen corresponding path program 1 times [2022-01-11 00:41:13,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:41:13,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223315926] [2022-01-11 00:41:13,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:41:13,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:41:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:41:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:41:13,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:41:13,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223315926] [2022-01-11 00:41:13,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223315926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:41:13,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:41:13,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:41:13,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844092168] [2022-01-11 00:41:13,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:41:13,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:41:13,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:41:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:41:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:41:13,423 INFO L87 Difference]: Start difference. First operand 1168 states and 1691 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:41:15,764 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 [] [2022-01-11 00:41:18,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:41:20,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:41:22,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:41:26,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:41:28,900 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 [] [2022-01-11 00:41:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:41:29,189 INFO L93 Difference]: Finished difference Result 5197 states and 7578 transitions. [2022-01-11 00:41:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 00:41:29,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-11 00:41:29,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:41:29,208 INFO L225 Difference]: With dead ends: 5197 [2022-01-11 00:41:29,208 INFO L226 Difference]: Without dead ends: 4174 [2022-01-11 00:41:29,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:41:29,211 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 555 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 11 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-01-11 00:41:29,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 1215 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 918 Invalid, 6 Unknown, 0 Unchecked, 14.9s Time] [2022-01-11 00:41:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4174 states. [2022-01-11 00:41:29,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4174 to 1556. [2022-01-11 00:41:29,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1555 states have (on average 1.4411575562700965) internal successors, (2241), 1555 states have internal predecessors, (2241), 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) [2022-01-11 00:41:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2241 transitions. [2022-01-11 00:41:29,555 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2241 transitions. Word has length 54 [2022-01-11 00:41:29,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:41:29,555 INFO L470 AbstractCegarLoop]: Abstraction has 1556 states and 2241 transitions. [2022-01-11 00:41:29,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:41:29,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2241 transitions. [2022-01-11 00:41:29,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 00:41:29,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:41:29,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:41:29,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:41:29,557 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:41:29,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:41:29,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1039294220, now seen corresponding path program 1 times [2022-01-11 00:41:29,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:41:29,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552520824] [2022-01-11 00:41:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:41:29,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:41:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:41:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:41:29,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:41:29,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552520824] [2022-01-11 00:41:29,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552520824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:41:29,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:41:29,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:41:29,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935571098] [2022-01-11 00:41:29,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:41:29,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:41:29,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:41:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:41:29,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:41:29,855 INFO L87 Difference]: Start difference. First operand 1556 states and 2241 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:41:32,057 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 [] [2022-01-11 00:41:34,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:41:36,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:41:39,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:41:41,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:41:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:41:44,937 INFO L93 Difference]: Finished difference Result 10261 states and 14886 transitions. [2022-01-11 00:41:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:41:44,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-11 00:41:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:41:44,973 INFO L225 Difference]: With dead ends: 10261 [2022-01-11 00:41:44,973 INFO L226 Difference]: Without dead ends: 8904 [2022-01-11 00:41:44,978 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 [2022-01-11 00:41:44,979 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 1158 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 25 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-01-11 00:41:44,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 1061 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 643 Invalid, 5 Unknown, 0 Unchecked, 12.5s Time] [2022-01-11 00:41:44,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8904 states. [2022-01-11 00:41:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8904 to 5026. [2022-01-11 00:41:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 5025 states have (on average 1.4386069651741293) internal successors, (7229), 5025 states have internal predecessors, (7229), 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) [2022-01-11 00:41:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 7229 transitions. [2022-01-11 00:41:46,536 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 7229 transitions. Word has length 54 [2022-01-11 00:41:46,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:41:46,536 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 7229 transitions. [2022-01-11 00:41:46,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:41:46,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 7229 transitions. [2022-01-11 00:41:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 00:41:46,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:41:46,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:41:46,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:41:46,539 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:41:46,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:41:46,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1941305064, now seen corresponding path program 1 times [2022-01-11 00:41:46,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:41:46,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401470789] [2022-01-11 00:41:46,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:41:46,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:41:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:41:46,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:41:46,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:41:46,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401470789] [2022-01-11 00:41:46,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401470789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:41:46,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:41:46,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:41:46,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414600081] [2022-01-11 00:41:46,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:41:46,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:41:46,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:41:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:41:46,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:41:46,832 INFO L87 Difference]: Start difference. First operand 5026 states and 7229 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:41:49,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:41:52,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:42:01,108 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 [] [2022-01-11 00:42:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:42:06,358 INFO L93 Difference]: Finished difference Result 36936 states and 53280 transitions. [2022-01-11 00:42:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:42:06,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-11 00:42:06,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:42:06,443 INFO L225 Difference]: With dead ends: 36936 [2022-01-11 00:42:06,443 INFO L226 Difference]: Without dead ends: 32339 [2022-01-11 00:42:06,457 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 [2022-01-11 00:42:06,458 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 1126 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:42:06,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1126 Valid, 1055 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 583 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2022-01-11 00:42:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32339 states. [2022-01-11 00:42:15,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32339 to 24644. [2022-01-11 00:42:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24644 states, 24643 states have (on average 1.431400397678854) internal successors, (35274), 24643 states have internal predecessors, (35274), 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) [2022-01-11 00:42:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24644 states to 24644 states and 35274 transitions. [2022-01-11 00:42:15,971 INFO L78 Accepts]: Start accepts. Automaton has 24644 states and 35274 transitions. Word has length 54 [2022-01-11 00:42:15,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:42:15,972 INFO L470 AbstractCegarLoop]: Abstraction has 24644 states and 35274 transitions. [2022-01-11 00:42:15,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:42:15,972 INFO L276 IsEmpty]: Start isEmpty. Operand 24644 states and 35274 transitions. [2022-01-11 00:42:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 00:42:15,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:42:15,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:42:15,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:42:15,976 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:42:15,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:42:15,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1061926639, now seen corresponding path program 1 times [2022-01-11 00:42:15,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:42:15,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249619282] [2022-01-11 00:42:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:42:15,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:42:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:42:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:42:17,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:42:17,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249619282] [2022-01-11 00:42:17,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249619282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:42:17,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:42:17,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-11 00:42:17,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278525051] [2022-01-11 00:42:17,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:42:17,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 00:42:17,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:42:17,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 00:42:17,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-01-11 00:42:17,324 INFO L87 Difference]: Start difference. First operand 24644 states and 35274 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)