/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_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:31:13,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:31:13,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:31:13,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:31:13,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:31:13,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:31:13,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:31:13,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:31:13,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:31:13,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:31:13,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:31:13,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:31:13,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:31:13,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:31:13,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:31:13,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:31:13,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:31:13,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:31:13,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:31:13,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:31:13,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:31:13,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:31:13,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:31:13,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:31:13,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:31:13,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:31:13,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:31:13,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:31:13,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:31:13,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:31:13,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:31:13,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:31:13,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:31:13,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:31:13,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:31:13,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:31:13,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:31:13,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:31:13,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:31:13,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:31:13,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:31:13,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:31:13,566 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:31:13,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:31:13,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:31:13,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:31:13,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:31:13,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:31:13,567 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:31:13,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:31:13,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:31:13,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:31:13,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:31:13,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:31:13,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:31:13,568 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:31:13,568 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:31:13,568 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:31:13,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:31:13,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:31:13,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:31:13,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:31:13,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:31:13,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:31:13,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:31:13,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:31:13,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:31:13,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:31:13,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:31:13,569 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:31:13,569 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:31:13,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:31:13,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:31:13,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:31:13,570 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:31:13,570 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:31:13,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:31:13,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:31:13,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:31:13,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:31:13,782 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:31:13,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-11 06:31:13,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5abdf5ab8/68f519392a614caeadebbbbb52a09b52/FLAGb395efe02 [2022-01-11 06:31:14,232 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:31:14,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-11 06:31:14,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5abdf5ab8/68f519392a614caeadebbbbb52a09b52/FLAGb395efe02 [2022-01-11 06:31:14,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5abdf5ab8/68f519392a614caeadebbbbb52a09b52 [2022-01-11 06:31:14,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:31:14,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:31:14,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:31:14,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:31:14,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:31:14,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729bc9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14, skipping insertion in model container [2022-01-11 06:31:14,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:31:14,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:31:14,474 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.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2022-01-11 06:31:14,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:31:14,549 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:31:14,583 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.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2022-01-11 06:31:14,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:31:14,626 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:31:14,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14 WrapperNode [2022-01-11 06:31:14,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:31:14,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:31:14,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:31:14,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:31:14,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,702 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 662 [2022-01-11 06:31:14,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:31:14,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:31:14,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:31:14,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:31:14,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:31:14,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:31:14,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:31:14,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:31:14,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14" (1/1) ... [2022-01-11 06:31:14,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:31:14,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:31:14,786 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 06:31:14,801 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 06:31:14,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:31:14,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:31:14,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:31:14,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:31:14,924 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:31:14,925 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:31:15,420 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:31:15,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:31:15,429 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:31:15,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:31:15 BoogieIcfgContainer [2022-01-11 06:31:15,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:31:15,431 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:31:15,431 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:31:15,432 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:31:15,434 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:31:15" (1/1) ... [2022-01-11 06:31:15,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:31:15 BasicIcfg [2022-01-11 06:31:15,771 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:31:15,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:31:15,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:31:15,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:31:15,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:31:14" (1/4) ... [2022-01-11 06:31:15,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7769a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:31:15, skipping insertion in model container [2022-01-11 06:31:15,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:14" (2/4) ... [2022-01-11 06:31:15,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7769a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:31:15, skipping insertion in model container [2022-01-11 06:31:15,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:31:15" (3/4) ... [2022-01-11 06:31:15,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7769a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:31:15, skipping insertion in model container [2022-01-11 06:31:15,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:31:15" (4/4) ... [2022-01-11 06:31:15,776 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 06:31:15,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:31:15,780 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:31:15,809 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:31:15,814 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 06:31:15,814 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:31:15,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 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 06:31:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:31:15,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:15,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:31:15,837 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 363378366, now seen corresponding path program 1 times [2022-01-11 06:31:15,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:15,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370998877] [2022-01-11 06:31:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:15,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:16,317 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 06:31:16,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:16,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370998877] [2022-01-11 06:31:16,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370998877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:16,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:16,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:31:16,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872861499] [2022-01-11 06:31:16,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:16,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:31:16,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:31:16,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:31:16,345 INFO L87 Difference]: Start difference. First operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 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 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 06:31:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:16,969 INFO L93 Difference]: Finished difference Result 365 states and 600 transitions. [2022-01-11 06:31:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:31:16,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-11 06:31:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:16,986 INFO L225 Difference]: With dead ends: 365 [2022-01-11 06:31:16,987 INFO L226 Difference]: Without dead ends: 275 [2022-01-11 06:31:16,990 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 06:31:16,995 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 156 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:31:16,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 568 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 06:31:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-01-11 06:31:17,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 273. [2022-01-11 06:31:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.5036764705882353) internal successors, (409), 272 states have internal predecessors, (409), 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 06:31:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 409 transitions. [2022-01-11 06:31:17,111 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 409 transitions. Word has length 65 [2022-01-11 06:31:17,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:17,111 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 409 transitions. [2022-01-11 06:31:17,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 06:31:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 409 transitions. [2022-01-11 06:31:17,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:31:17,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:17,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:31:17,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:31:17,113 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:17,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:17,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1621157669, now seen corresponding path program 1 times [2022-01-11 06:31:17,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:17,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078848898] [2022-01-11 06:31:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:17,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:17,303 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 06:31:17,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:17,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078848898] [2022-01-11 06:31:17,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078848898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:17,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:17,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:31:17,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93857617] [2022-01-11 06:31:17,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:17,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:31:17,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:17,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:31:17,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:31:17,311 INFO L87 Difference]: Start difference. First operand 273 states and 409 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 06:31:17,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:17,414 INFO L93 Difference]: Finished difference Result 417 states and 633 transitions. [2022-01-11 06:31:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:31:17,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-01-11 06:31:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:17,417 INFO L225 Difference]: With dead ends: 417 [2022-01-11 06:31:17,418 INFO L226 Difference]: Without dead ends: 415 [2022-01-11 06:31:17,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:31:17,422 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 362 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:31:17,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 647 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:31:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-11 06:31:17,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 275. [2022-01-11 06:31:17,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.5) internal successors, (411), 274 states have internal predecessors, (411), 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 06:31:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 411 transitions. [2022-01-11 06:31:17,464 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 411 transitions. Word has length 66 [2022-01-11 06:31:17,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:17,465 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 411 transitions. [2022-01-11 06:31:17,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 06:31:17,466 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 411 transitions. [2022-01-11 06:31:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 06:31:17,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:17,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:31:17,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:31:17,474 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:17,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:17,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1284700892, now seen corresponding path program 1 times [2022-01-11 06:31:17,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:17,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744880731] [2022-01-11 06:31:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:17,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:17,706 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 06:31:17,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:17,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744880731] [2022-01-11 06:31:17,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744880731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:17,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:17,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:31:17,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414356339] [2022-01-11 06:31:17,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:17,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:31:17,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:17,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:31:17,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:31:17,708 INFO L87 Difference]: Start difference. First operand 275 states and 411 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 06:31:18,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:18,317 INFO L93 Difference]: Finished difference Result 1530 states and 2367 transitions. [2022-01-11 06:31:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:31:18,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 67 [2022-01-11 06:31:18,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:18,323 INFO L225 Difference]: With dead ends: 1530 [2022-01-11 06:31:18,323 INFO L226 Difference]: Without dead ends: 1318 [2022-01-11 06:31:18,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-11 06:31:18,331 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 1120 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:31:18,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 2069 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 06:31:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-01-11 06:31:18,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 852. [2022-01-11 06:31:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.5311398354876615) internal successors, (1303), 851 states have internal predecessors, (1303), 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 06:31:18,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1303 transitions. [2022-01-11 06:31:18,450 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1303 transitions. Word has length 67 [2022-01-11 06:31:18,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:18,450 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1303 transitions. [2022-01-11 06:31:18,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 06:31:18,451 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1303 transitions. [2022-01-11 06:31:18,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:31:18,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:18,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:31:18,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:31:18,452 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:18,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:18,452 INFO L85 PathProgramCache]: Analyzing trace with hash -597360800, now seen corresponding path program 1 times [2022-01-11 06:31:18,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:18,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800329109] [2022-01-11 06:31:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:18,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:18,686 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 06:31:18,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:18,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800329109] [2022-01-11 06:31:18,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800329109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:18,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:18,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:31:18,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365731020] [2022-01-11 06:31:18,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:18,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:31:18,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:18,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:31:18,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:31:18,689 INFO L87 Difference]: Start difference. First operand 852 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:20,735 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 06:31:21,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:21,005 INFO L93 Difference]: Finished difference Result 1916 states and 2965 transitions. [2022-01-11 06:31:21,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:31:21,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 06:31:21,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:21,010 INFO L225 Difference]: With dead ends: 1916 [2022-01-11 06:31:21,010 INFO L226 Difference]: Without dead ends: 1358 [2022-01-11 06:31:21,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:31:21,012 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 226 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:31:21,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 717 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 06:31:21,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-01-11 06:31:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1356. [2022-01-11 06:31:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 1.537269372693727) internal successors, (2083), 1355 states have internal predecessors, (2083), 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 06:31:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 2083 transitions. [2022-01-11 06:31:21,211 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 2083 transitions. Word has length 68 [2022-01-11 06:31:21,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:21,212 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 2083 transitions. [2022-01-11 06:31:21,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 2083 transitions. [2022-01-11 06:31:21,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:31:21,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:21,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:31:21,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:31:21,213 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:21,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:21,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1740142315, now seen corresponding path program 1 times [2022-01-11 06:31:21,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:21,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607448188] [2022-01-11 06:31:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:21,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:21,449 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 06:31:21,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:21,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607448188] [2022-01-11 06:31:21,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607448188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:21,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:21,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:31:21,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918188146] [2022-01-11 06:31:21,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:21,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:31:21,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:31:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:31:21,451 INFO L87 Difference]: Start difference. First operand 1356 states and 2083 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:23,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:31:26,485 WARN L534 Checker$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 06:31:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:28,997 INFO L93 Difference]: Finished difference Result 7206 states and 11137 transitions. [2022-01-11 06:31:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:31:28,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:31:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:29,015 INFO L225 Difference]: With dead ends: 7206 [2022-01-11 06:31:29,015 INFO L226 Difference]: Without dead ends: 5938 [2022-01-11 06:31:29,018 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 06:31:29,018 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 1143 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:31:29,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 1264 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 744 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-01-11 06:31:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5938 states. [2022-01-11 06:31:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5938 to 5402. [2022-01-11 06:31:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.533234586187743) internal successors, (8281), 5401 states have internal predecessors, (8281), 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 06:31:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8281 transitions. [2022-01-11 06:31:30,203 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8281 transitions. Word has length 69 [2022-01-11 06:31:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:30,204 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 8281 transitions. [2022-01-11 06:31:30,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8281 transitions. [2022-01-11 06:31:30,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:31:30,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:30,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:31:30,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:31:30,207 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:30,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1918638426, now seen corresponding path program 1 times [2022-01-11 06:31:30,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:30,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839355221] [2022-01-11 06:31:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:30,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:30,318 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 06:31:30,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:30,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839355221] [2022-01-11 06:31:30,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839355221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:30,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:30,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:31:30,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387262674] [2022-01-11 06:31:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:30,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:31:30,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:31:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:31:30,320 INFO L87 Difference]: Start difference. First operand 5402 states and 8281 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:32,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:32,249 INFO L93 Difference]: Finished difference Result 13703 states and 20979 transitions. [2022-01-11 06:31:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:31:32,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:31:32,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:32,286 INFO L225 Difference]: With dead ends: 13703 [2022-01-11 06:31:32,286 INFO L226 Difference]: Without dead ends: 8613 [2022-01-11 06:31:32,292 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 06:31:32,295 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 171 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 478 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 06:31:32,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 478 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:31:32,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8613 states. [2022-01-11 06:31:34,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8613 to 8570. [2022-01-11 06:31:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8570 states, 8569 states have (on average 1.508344030808729) internal successors, (12925), 8569 states have internal predecessors, (12925), 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 06:31:34,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8570 states to 8570 states and 12925 transitions. [2022-01-11 06:31:34,306 INFO L78 Accepts]: Start accepts. Automaton has 8570 states and 12925 transitions. Word has length 69 [2022-01-11 06:31:34,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:34,306 INFO L470 AbstractCegarLoop]: Abstraction has 8570 states and 12925 transitions. [2022-01-11 06:31:34,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:34,307 INFO L276 IsEmpty]: Start isEmpty. Operand 8570 states and 12925 transitions. [2022-01-11 06:31:34,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:31:34,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:34,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:31:34,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:31:34,309 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:34,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:34,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2130835253, now seen corresponding path program 1 times [2022-01-11 06:31:34,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:34,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085774921] [2022-01-11 06:31:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:34,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:34,382 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 06:31:34,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:34,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085774921] [2022-01-11 06:31:34,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085774921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:34,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:34,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:31:34,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321245689] [2022-01-11 06:31:34,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:34,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:31:34,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:31:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:31:34,384 INFO L87 Difference]: Start difference. First operand 8570 states and 12925 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:37,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:37,801 INFO L93 Difference]: Finished difference Result 23476 states and 35287 transitions. [2022-01-11 06:31:37,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:31:37,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:31:37,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:37,841 INFO L225 Difference]: With dead ends: 23476 [2022-01-11 06:31:37,841 INFO L226 Difference]: Without dead ends: 15483 [2022-01-11 06:31:37,852 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 06:31:37,853 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 158 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 474 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 06:31:37,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 474 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:31:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15483 states. [2022-01-11 06:31:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15483 to 15437. [2022-01-11 06:31:41,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15437 states, 15436 states have (on average 1.4793340243586421) internal successors, (22835), 15436 states have internal predecessors, (22835), 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 06:31:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15437 states to 15437 states and 22835 transitions. [2022-01-11 06:31:41,594 INFO L78 Accepts]: Start accepts. Automaton has 15437 states and 22835 transitions. Word has length 69 [2022-01-11 06:31:41,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:41,595 INFO L470 AbstractCegarLoop]: Abstraction has 15437 states and 22835 transitions. [2022-01-11 06:31:41,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 15437 states and 22835 transitions. [2022-01-11 06:31:41,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:31:41,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:41,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:31:41,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:31:41,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:41,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1310776327, now seen corresponding path program 1 times [2022-01-11 06:31:41,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:41,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524497743] [2022-01-11 06:31:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:41,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:41,680 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 06:31:41,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:41,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524497743] [2022-01-11 06:31:41,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524497743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:41,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:41,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:31:41,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152875067] [2022-01-11 06:31:41,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:41,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:31:41,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:41,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:31:41,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:31:41,682 INFO L87 Difference]: Start difference. First operand 15437 states and 22835 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:45,385 INFO L93 Difference]: Finished difference Result 20980 states and 30893 transitions. [2022-01-11 06:31:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:31:45,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:31:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:45,415 INFO L225 Difference]: With dead ends: 20980 [2022-01-11 06:31:45,415 INFO L226 Difference]: Without dead ends: 16376 [2022-01-11 06:31:45,423 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 06:31:45,423 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 145 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:31:45,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 474 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:31:45,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16376 states. [2022-01-11 06:31:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16376 to 16374. [2022-01-11 06:31:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16374 states, 16373 states have (on average 1.4466499725157271) internal successors, (23686), 16373 states have internal predecessors, (23686), 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 06:31:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16374 states to 16374 states and 23686 transitions. [2022-01-11 06:31:49,509 INFO L78 Accepts]: Start accepts. Automaton has 16374 states and 23686 transitions. Word has length 69 [2022-01-11 06:31:49,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:49,510 INFO L470 AbstractCegarLoop]: Abstraction has 16374 states and 23686 transitions. [2022-01-11 06:31:49,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:49,510 INFO L276 IsEmpty]: Start isEmpty. Operand 16374 states and 23686 transitions. [2022-01-11 06:31:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:31:49,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:49,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:31:49,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:31:49,514 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:49,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash 16147478, now seen corresponding path program 1 times [2022-01-11 06:31:49,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:49,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248344459] [2022-01-11 06:31:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:49,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:49,589 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 06:31:49,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:49,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248344459] [2022-01-11 06:31:49,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248344459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:49,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:49,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:31:49,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126792998] [2022-01-11 06:31:49,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:49,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:31:49,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:49,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:31:49,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:31:49,591 INFO L87 Difference]: Start difference. First operand 16374 states and 23686 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:53,458 INFO L93 Difference]: Finished difference Result 29965 states and 43492 transitions. [2022-01-11 06:31:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:31:53,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 06:31:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:53,488 INFO L225 Difference]: With dead ends: 29965 [2022-01-11 06:31:53,488 INFO L226 Difference]: Without dead ends: 18169 [2022-01-11 06:31:53,502 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 06:31:53,507 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 175 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 579 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 06:31:53,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 579 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:31:53,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18169 states. [2022-01-11 06:31:57,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18169 to 17182. [2022-01-11 06:31:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17182 states, 17181 states have (on average 1.4399045457191084) internal successors, (24739), 17181 states have internal predecessors, (24739), 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 06:31:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17182 states to 17182 states and 24739 transitions. [2022-01-11 06:31:57,309 INFO L78 Accepts]: Start accepts. Automaton has 17182 states and 24739 transitions. Word has length 69 [2022-01-11 06:31:57,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:57,309 INFO L470 AbstractCegarLoop]: Abstraction has 17182 states and 24739 transitions. [2022-01-11 06:31:57,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 17182 states and 24739 transitions. [2022-01-11 06:31:57,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 06:31:57,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:57,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:31:57,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:31:57,314 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:57,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:57,315 INFO L85 PathProgramCache]: Analyzing trace with hash -620039077, now seen corresponding path program 1 times [2022-01-11 06:31:57,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:57,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761461705] [2022-01-11 06:31:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:57,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:57,568 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 06:31:57,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:57,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761461705] [2022-01-11 06:31:57,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761461705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:57,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:57,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:31:57,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851976743] [2022-01-11 06:31:57,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:57,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:31:57,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:31:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:31:57,569 INFO L87 Difference]: Start difference. First operand 17182 states and 24739 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:59,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:02,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:04,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:32:07,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []