/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:07:32,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:07:32,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:07:32,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:07:32,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:07:32,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:07:32,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:07:32,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:07:32,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:07:32,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:07:32,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:07:32,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:07:32,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:07:32,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:07:32,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:07:32,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:07:32,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:07:32,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:07:32,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:07:32,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:07:32,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:07:32,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:07:32,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:07:32,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:07:32,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 19:07:32,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 19:07:32,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 19:07:32,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 19:07:32,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 19:07:32,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 19:07:32,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 19:07:32,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 19:07:32,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 19:07:32,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 19:07:32,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 19:07:32,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 19:07:32,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 19:07:32,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 19:07:32,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:07:32,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:07:32,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:07:32,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:07:32,536 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:07:32,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:07:32,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:07:32,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:07:32,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:07:32,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:07:32,538 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:07:32,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:07:32,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:07:32,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:07:32,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:07:32,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:07:32,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:07:32,538 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:07:32,539 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:07:32,539 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:07:32,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:07:32,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:07:32,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:07:32,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:07:32,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:07:32,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:07:32,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:07:32,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:07:32,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:07:32,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:07:32,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:07:32,540 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:07:32,540 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:07:32,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:07:32,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:07:32,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:07:32,540 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:07:32,541 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:07:32,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:07:32,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:07:32,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:07:32,722 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:07:32,722 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:07:32,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 19:07:32,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8c586b7/8f22661570074207915c14240935bd63/FLAGcc59f8877 [2022-01-10 19:07:33,120 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:07:33,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 19:07:33,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8c586b7/8f22661570074207915c14240935bd63/FLAGcc59f8877 [2022-01-10 19:07:33,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8c586b7/8f22661570074207915c14240935bd63 [2022-01-10 19:07:33,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:07:33,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:07:33,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:07:33,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:07:33,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:07:33,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41bcc453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33, skipping insertion in model container [2022-01-10 19:07:33,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:07:33,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:07:33,741 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2022-01-10 19:07:33,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:07:33,777 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:07:33,811 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2022-01-10 19:07:33,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:07:33,834 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:07:33,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33 WrapperNode [2022-01-10 19:07:33,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:07:33,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:07:33,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:07:33,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:07:33,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,871 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 615 [2022-01-10 19:07:33,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:07:33,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:07:33,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:07:33,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:07:33,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:07:33,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:07:33,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:07:33,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:07:33,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33" (1/1) ... [2022-01-10 19:07:33,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:07:33,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:07:33,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 19:07:33,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 19:07:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:07:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:07:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:07:33,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:07:34,064 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:07:34,066 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:07:34,462 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:07:34,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:07:34,468 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 19:07:34,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:07:34 BoogieIcfgContainer [2022-01-10 19:07:34,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:07:34,470 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:07:34,470 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:07:34,471 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:07:34,473 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:07:34" (1/1) ... [2022-01-10 19:07:34,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:07:34 BasicIcfg [2022-01-10 19:07:34,786 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:07:34,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:07:34,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:07:34,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:07:34,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:07:33" (1/4) ... [2022-01-10 19:07:34,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71038531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:07:34, skipping insertion in model container [2022-01-10 19:07:34,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:33" (2/4) ... [2022-01-10 19:07:34,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71038531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:07:34, skipping insertion in model container [2022-01-10 19:07:34,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:07:34" (3/4) ... [2022-01-10 19:07:34,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71038531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:07:34, skipping insertion in model container [2022-01-10 19:07:34,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:07:34" (4/4) ... [2022-01-10 19:07:34,796 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 19:07:34,800 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:07:34,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:07:34,847 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:07:34,853 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 19:07:34,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:07:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 19:07:34,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:34,880 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] [2022-01-10 19:07:34,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:34,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1733086145, now seen corresponding path program 1 times [2022-01-10 19:07:34,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:34,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236052886] [2022-01-10 19:07:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:34,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:35,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:35,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236052886] [2022-01-10 19:07:35,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236052886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:35,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:35,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:35,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286926029] [2022-01-10 19:07:35,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:35,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:35,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:35,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:35,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:35,451 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:37,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:07:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:37,714 INFO L93 Difference]: Finished difference Result 311 states and 527 transitions. [2022-01-10 19:07:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:37,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-01-10 19:07:37,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:37,727 INFO L225 Difference]: With dead ends: 311 [2022-01-10 19:07:37,728 INFO L226 Difference]: Without dead ends: 213 [2022-01-10 19:07:37,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:37,732 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 150 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:37,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 428 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 19:07:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-01-10 19:07:37,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2022-01-10 19:07:37,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.5666666666666667) internal successors, (329), 210 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 329 transitions. [2022-01-10 19:07:37,795 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 329 transitions. Word has length 62 [2022-01-10 19:07:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:37,796 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 329 transitions. [2022-01-10 19:07:37,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:37,796 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 329 transitions. [2022-01-10 19:07:37,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 19:07:37,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:37,802 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] [2022-01-10 19:07:37,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:07:37,802 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:37,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:37,804 INFO L85 PathProgramCache]: Analyzing trace with hash -994188472, now seen corresponding path program 1 times [2022-01-10 19:07:37,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:37,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638076771] [2022-01-10 19:07:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:37,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:37,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:37,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638076771] [2022-01-10 19:07:37,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638076771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:37,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:37,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:37,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674086857] [2022-01-10 19:07:37,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:37,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:37,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:37,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:37,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:37,973 INFO L87 Difference]: Start difference. First operand 211 states and 329 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:38,080 INFO L93 Difference]: Finished difference Result 595 states and 922 transitions. [2022-01-10 19:07:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:38,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2022-01-10 19:07:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:38,084 INFO L225 Difference]: With dead ends: 595 [2022-01-10 19:07:38,084 INFO L226 Difference]: Without dead ends: 409 [2022-01-10 19:07:38,087 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 [2022-01-10 19:07:38,088 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 581 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:38,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 424 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:38,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-01-10 19:07:38,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 407. [2022-01-10 19:07:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.5541871921182266) internal successors, (631), 406 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 631 transitions. [2022-01-10 19:07:38,155 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 631 transitions. Word has length 64 [2022-01-10 19:07:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:38,156 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 631 transitions. [2022-01-10 19:07:38,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 631 transitions. [2022-01-10 19:07:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:07:38,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:38,161 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] [2022-01-10 19:07:38,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:07:38,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:38,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2113512833, now seen corresponding path program 1 times [2022-01-10 19:07:38,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:38,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832829550] [2022-01-10 19:07:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:38,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:38,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:38,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832829550] [2022-01-10 19:07:38,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832829550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:38,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:38,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:38,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638008901] [2022-01-10 19:07:38,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:38,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:38,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:38,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:38,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:38,272 INFO L87 Difference]: Start difference. First operand 407 states and 631 transitions. 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) [2022-01-10 19:07:38,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:38,331 INFO L93 Difference]: Finished difference Result 854 states and 1362 transitions. [2022-01-10 19:07:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:38,332 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 [2022-01-10 19:07:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:38,335 INFO L225 Difference]: With dead ends: 854 [2022-01-10 19:07:38,335 INFO L226 Difference]: Without dead ends: 555 [2022-01-10 19:07:38,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:38,340 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 128 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:38,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 513 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:38,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-01-10 19:07:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2022-01-10 19:07:38,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 1.5645756457564575) internal successors, (848), 542 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 848 transitions. [2022-01-10 19:07:38,379 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 848 transitions. Word has length 65 [2022-01-10 19:07:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:38,380 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 848 transitions. [2022-01-10 19:07:38,381 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) [2022-01-10 19:07:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 848 transitions. [2022-01-10 19:07:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:07:38,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:38,382 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] [2022-01-10 19:07:38,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:07:38,383 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:38,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:38,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1392201104, now seen corresponding path program 1 times [2022-01-10 19:07:38,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:38,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732546768] [2022-01-10 19:07:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:38,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:38,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:38,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732546768] [2022-01-10 19:07:38,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732546768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:38,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:38,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:38,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586171426] [2022-01-10 19:07:38,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:38,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:38,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:38,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:38,510 INFO L87 Difference]: Start difference. First operand 543 states and 848 transitions. 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) [2022-01-10 19:07:38,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:38,569 INFO L93 Difference]: Finished difference Result 1113 states and 1783 transitions. [2022-01-10 19:07:38,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:38,569 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 [2022-01-10 19:07:38,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:38,573 INFO L225 Difference]: With dead ends: 1113 [2022-01-10 19:07:38,574 INFO L226 Difference]: Without dead ends: 678 [2022-01-10 19:07:38,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:38,579 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:38,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 513 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:38,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-01-10 19:07:38,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 676. [2022-01-10 19:07:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.5837037037037036) internal successors, (1069), 675 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1069 transitions. [2022-01-10 19:07:38,626 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1069 transitions. Word has length 65 [2022-01-10 19:07:38,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:38,627 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 1069 transitions. [2022-01-10 19:07:38,627 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) [2022-01-10 19:07:38,628 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1069 transitions. [2022-01-10 19:07:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:07:38,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:38,628 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] [2022-01-10 19:07:38,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:07:38,629 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:38,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1142110404, now seen corresponding path program 1 times [2022-01-10 19:07:38,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:38,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367073271] [2022-01-10 19:07:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:38,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:38,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:38,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367073271] [2022-01-10 19:07:38,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367073271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:38,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:38,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:38,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231748395] [2022-01-10 19:07:38,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:38,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:38,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:38,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:38,675 INFO L87 Difference]: Start difference. First operand 676 states and 1069 transitions. 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) [2022-01-10 19:07:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:38,759 INFO L93 Difference]: Finished difference Result 1990 states and 3143 transitions. [2022-01-10 19:07:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:38,760 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 [2022-01-10 19:07:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:38,765 INFO L225 Difference]: With dead ends: 1990 [2022-01-10 19:07:38,765 INFO L226 Difference]: Without dead ends: 1342 [2022-01-10 19:07:38,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:38,766 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 213 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:38,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 649 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:38,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-01-10 19:07:38,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 678. [2022-01-10 19:07:38,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.5819793205317578) internal successors, (1071), 677 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1071 transitions. [2022-01-10 19:07:38,820 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1071 transitions. Word has length 65 [2022-01-10 19:07:38,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:38,822 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 1071 transitions. [2022-01-10 19:07:38,823 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) [2022-01-10 19:07:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1071 transitions. [2022-01-10 19:07:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:07:38,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:38,824 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] [2022-01-10 19:07:38,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:07:38,825 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:38,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:38,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2063279837, now seen corresponding path program 1 times [2022-01-10 19:07:38,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:38,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800057993] [2022-01-10 19:07:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:38,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:38,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:38,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800057993] [2022-01-10 19:07:38,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800057993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:38,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:38,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:07:38,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306985926] [2022-01-10 19:07:38,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:38,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:07:38,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:38,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:07:38,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:07:38,946 INFO L87 Difference]: Start difference. First operand 678 states and 1071 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2022-01-10 19:07:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:39,142 INFO L93 Difference]: Finished difference Result 2636 states and 4160 transitions. [2022-01-10 19:07:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:07:39,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 [2022-01-10 19:07:39,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:39,149 INFO L225 Difference]: With dead ends: 2636 [2022-01-10 19:07:39,149 INFO L226 Difference]: Without dead ends: 1970 [2022-01-10 19:07:39,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:07:39,152 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 660 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:39,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 942 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2022-01-10 19:07:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1320. [2022-01-10 19:07:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.5693707354056103) internal successors, (2070), 1319 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2070 transitions. [2022-01-10 19:07:39,255 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2070 transitions. Word has length 66 [2022-01-10 19:07:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:39,255 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 2070 transitions. [2022-01-10 19:07:39,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2022-01-10 19:07:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2070 transitions. [2022-01-10 19:07:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:07:39,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:39,256 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] [2022-01-10 19:07:39,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:07:39,256 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1589021305, now seen corresponding path program 1 times [2022-01-10 19:07:39,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:39,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713786565] [2022-01-10 19:07:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:39,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:39,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:39,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713786565] [2022-01-10 19:07:39,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713786565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:39,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:39,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:39,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804411769] [2022-01-10 19:07:39,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:39,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:39,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:39,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:39,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:39,313 INFO L87 Difference]: Start difference. First operand 1320 states and 2070 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) [2022-01-10 19:07:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:39,403 INFO L93 Difference]: Finished difference Result 2305 states and 3608 transitions. [2022-01-10 19:07:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:39,403 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 [2022-01-10 19:07:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:39,406 INFO L225 Difference]: With dead ends: 2305 [2022-01-10 19:07:39,406 INFO L226 Difference]: Without dead ends: 1001 [2022-01-10 19:07:39,407 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 [2022-01-10 19:07:39,408 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 69 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:39,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 707 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:39,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-01-10 19:07:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2022-01-10 19:07:39,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 1.562) internal successors, (1562), 1000 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:39,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1562 transitions. [2022-01-10 19:07:39,472 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1562 transitions. Word has length 66 [2022-01-10 19:07:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:39,472 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1562 transitions. [2022-01-10 19:07:39,472 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) [2022-01-10 19:07:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1562 transitions. [2022-01-10 19:07:39,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 19:07:39,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:39,473 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] [2022-01-10 19:07:39,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:07:39,473 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:39,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:39,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1650526316, now seen corresponding path program 1 times [2022-01-10 19:07:39,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:39,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977400305] [2022-01-10 19:07:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:39,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:39,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:39,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977400305] [2022-01-10 19:07:39,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977400305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:39,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:39,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:39,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170512770] [2022-01-10 19:07:39,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:39,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:39,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:39,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:39,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:39,508 INFO L87 Difference]: Start difference. First operand 1001 states and 1562 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) [2022-01-10 19:07:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:39,593 INFO L93 Difference]: Finished difference Result 1979 states and 3081 transitions. [2022-01-10 19:07:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:39,594 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 [2022-01-10 19:07:39,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:39,597 INFO L225 Difference]: With dead ends: 1979 [2022-01-10 19:07:39,598 INFO L226 Difference]: Without dead ends: 1323 [2022-01-10 19:07:39,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:39,599 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 210 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:39,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 450 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:39,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2022-01-10 19:07:39,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1001. [2022-01-10 19:07:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 1.561) internal successors, (1561), 1000 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1561 transitions. [2022-01-10 19:07:39,673 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1561 transitions. Word has length 69 [2022-01-10 19:07:39,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:39,673 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1561 transitions. [2022-01-10 19:07:39,673 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) [2022-01-10 19:07:39,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1561 transitions. [2022-01-10 19:07:39,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 19:07:39,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:39,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:07:39,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:07:39,674 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:39,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1373489108, now seen corresponding path program 1 times [2022-01-10 19:07:39,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:39,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840995270] [2022-01-10 19:07:39,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:39,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:39,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:39,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840995270] [2022-01-10 19:07:39,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840995270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:39,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:39,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:39,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412208050] [2022-01-10 19:07:39,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:39,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:39,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:39,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:39,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:39,814 INFO L87 Difference]: Start difference. First operand 1001 states and 1561 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:39,996 INFO L93 Difference]: Finished difference Result 2589 states and 4139 transitions. [2022-01-10 19:07:39,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:39,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2022-01-10 19:07:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:40,002 INFO L225 Difference]: With dead ends: 2589 [2022-01-10 19:07:40,002 INFO L226 Difference]: Without dead ends: 1749 [2022-01-10 19:07:40,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:40,004 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 121 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:40,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 420 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:40,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2022-01-10 19:07:40,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1747. [2022-01-10 19:07:40,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 1.5813287514318441) internal successors, (2761), 1746 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2761 transitions. [2022-01-10 19:07:40,191 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2761 transitions. Word has length 70 [2022-01-10 19:07:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:40,191 INFO L470 AbstractCegarLoop]: Abstraction has 1747 states and 2761 transitions. [2022-01-10 19:07:40,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:40,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2761 transitions. [2022-01-10 19:07:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 19:07:40,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:40,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:07:40,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:07:40,193 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:40,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1659559100, now seen corresponding path program 1 times [2022-01-10 19:07:40,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:40,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407240938] [2022-01-10 19:07:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:40,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:40,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:40,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407240938] [2022-01-10 19:07:40,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407240938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:40,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:40,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:40,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490065847] [2022-01-10 19:07:40,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:40,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:40,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:40,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:40,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:40,259 INFO L87 Difference]: Start difference. First operand 1747 states and 2761 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:40,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:40,532 INFO L93 Difference]: Finished difference Result 4867 states and 7759 transitions. [2022-01-10 19:07:40,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:40,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-01-10 19:07:40,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:40,542 INFO L225 Difference]: With dead ends: 4867 [2022-01-10 19:07:40,542 INFO L226 Difference]: Without dead ends: 3281 [2022-01-10 19:07:40,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:40,545 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 151 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:40,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 597 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:40,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-01-10 19:07:40,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3279. [2022-01-10 19:07:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3279 states, 3278 states have (on average 1.5695546064673582) internal successors, (5145), 3278 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 5145 transitions. [2022-01-10 19:07:40,834 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 5145 transitions. Word has length 72 [2022-01-10 19:07:40,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:40,835 INFO L470 AbstractCegarLoop]: Abstraction has 3279 states and 5145 transitions. [2022-01-10 19:07:40,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:40,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 5145 transitions. [2022-01-10 19:07:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 19:07:40,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:40,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:07:40,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:07:40,836 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:40,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:40,837 INFO L85 PathProgramCache]: Analyzing trace with hash -853908261, now seen corresponding path program 1 times [2022-01-10 19:07:40,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:40,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302824014] [2022-01-10 19:07:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:40,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:40,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:40,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302824014] [2022-01-10 19:07:40,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302824014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:40,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:40,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:40,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84791899] [2022-01-10 19:07:40,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:40,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:40,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:40,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:40,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:40,885 INFO L87 Difference]: Start difference. First operand 3279 states and 5145 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:41,300 INFO L93 Difference]: Finished difference Result 8720 states and 13697 transitions. [2022-01-10 19:07:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:41,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2022-01-10 19:07:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:41,317 INFO L225 Difference]: With dead ends: 8720 [2022-01-10 19:07:41,317 INFO L226 Difference]: Without dead ends: 5521 [2022-01-10 19:07:41,321 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 [2022-01-10 19:07:41,322 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 406 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:41,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 544 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5521 states. [2022-01-10 19:07:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5521 to 3284. [2022-01-10 19:07:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3284 states, 3283 states have (on average 1.5677733780079195) internal successors, (5147), 3283 states have internal predecessors, (5147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 5147 transitions. [2022-01-10 19:07:41,682 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 5147 transitions. Word has length 72 [2022-01-10 19:07:41,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:41,682 INFO L470 AbstractCegarLoop]: Abstraction has 3284 states and 5147 transitions. [2022-01-10 19:07:41,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:41,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 5147 transitions. [2022-01-10 19:07:41,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 19:07:41,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:41,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:07:41,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:07:41,683 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:41,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:41,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1840965122, now seen corresponding path program 1 times [2022-01-10 19:07:41,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:41,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465838158] [2022-01-10 19:07:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:41,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:41,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:41,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465838158] [2022-01-10 19:07:41,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465838158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:41,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:41,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:41,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032602179] [2022-01-10 19:07:41,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:41,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:41,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:41,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:41,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:41,768 INFO L87 Difference]: Start difference. First operand 3284 states and 5147 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:42,322 INFO L93 Difference]: Finished difference Result 9454 states and 14830 transitions. [2022-01-10 19:07:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:42,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2022-01-10 19:07:42,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:42,341 INFO L225 Difference]: With dead ends: 9454 [2022-01-10 19:07:42,341 INFO L226 Difference]: Without dead ends: 6238 [2022-01-10 19:07:42,346 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 [2022-01-10 19:07:42,346 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 531 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:42,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 425 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:42,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2022-01-10 19:07:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6236. [2022-01-10 19:07:43,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 1.559262229350441) internal successors, (9722), 6235 states have internal predecessors, (9722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:43,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 9722 transitions. [2022-01-10 19:07:43,048 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 9722 transitions. Word has length 72 [2022-01-10 19:07:43,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:43,048 INFO L470 AbstractCegarLoop]: Abstraction has 6236 states and 9722 transitions. [2022-01-10 19:07:43,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:43,048 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 9722 transitions. [2022-01-10 19:07:43,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 19:07:43,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:43,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:07:43,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:07:43,051 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:43,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:43,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1922282855, now seen corresponding path program 1 times [2022-01-10 19:07:43,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:43,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275823522] [2022-01-10 19:07:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:43,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:43,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:43,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275823522] [2022-01-10 19:07:43,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275823522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:43,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:43,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:43,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273538502] [2022-01-10 19:07:43,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:43,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:43,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:43,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:43,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:43,113 INFO L87 Difference]: Start difference. First operand 6236 states and 9722 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:45,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:07:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:45,874 INFO L93 Difference]: Finished difference Result 11726 states and 18476 transitions. [2022-01-10 19:07:45,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:45,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-01-10 19:07:45,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:45,890 INFO L225 Difference]: With dead ends: 11726 [2022-01-10 19:07:45,890 INFO L226 Difference]: Without dead ends: 8642 [2022-01-10 19:07:45,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:45,896 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 122 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:45,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 494 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 19:07:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8642 states. [2022-01-10 19:07:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8642 to 8640. [2022-01-10 19:07:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8640 states, 8639 states have (on average 1.5605972913531658) internal successors, (13482), 8639 states have internal predecessors, (13482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8640 states to 8640 states and 13482 transitions. [2022-01-10 19:07:46,745 INFO L78 Accepts]: Start accepts. Automaton has 8640 states and 13482 transitions. Word has length 73 [2022-01-10 19:07:46,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:46,746 INFO L470 AbstractCegarLoop]: Abstraction has 8640 states and 13482 transitions. [2022-01-10 19:07:46,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:46,746 INFO L276 IsEmpty]: Start isEmpty. Operand 8640 states and 13482 transitions. [2022-01-10 19:07:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 19:07:46,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:46,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:07:46,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:07:46,748 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:46,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:46,748 INFO L85 PathProgramCache]: Analyzing trace with hash -224337655, now seen corresponding path program 1 times [2022-01-10 19:07:46,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:46,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773173432] [2022-01-10 19:07:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:46,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:46,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:46,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773173432] [2022-01-10 19:07:46,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773173432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:46,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:46,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:46,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114690546] [2022-01-10 19:07:46,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:46,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:46,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:46,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:46,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:46,809 INFO L87 Difference]: Start difference. First operand 8640 states and 13482 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:47,700 INFO L93 Difference]: Finished difference Result 16980 states and 26704 transitions. [2022-01-10 19:07:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:47,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-01-10 19:07:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:47,722 INFO L225 Difference]: With dead ends: 16980 [2022-01-10 19:07:47,722 INFO L226 Difference]: Without dead ends: 10777 [2022-01-10 19:07:47,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:47,732 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 127 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:47,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 419 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10777 states. [2022-01-10 19:07:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10777 to 10551. [2022-01-10 19:07:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10551 states, 10550 states have (on average 1.5577251184834122) internal successors, (16434), 10550 states have internal predecessors, (16434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10551 states to 10551 states and 16434 transitions. [2022-01-10 19:07:48,651 INFO L78 Accepts]: Start accepts. Automaton has 10551 states and 16434 transitions. Word has length 73 [2022-01-10 19:07:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:48,651 INFO L470 AbstractCegarLoop]: Abstraction has 10551 states and 16434 transitions. [2022-01-10 19:07:48,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand 10551 states and 16434 transitions. [2022-01-10 19:07:48,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 19:07:48,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:48,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:07:48,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:07:48,653 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:48,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash -183612262, now seen corresponding path program 1 times [2022-01-10 19:07:48,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:48,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153331516] [2022-01-10 19:07:48,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:48,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:48,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:48,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153331516] [2022-01-10 19:07:48,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153331516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:48,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:48,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:48,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723092867] [2022-01-10 19:07:48,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:48,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:48,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:48,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:48,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:48,702 INFO L87 Difference]: Start difference. First operand 10551 states and 16434 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:49,520 INFO L93 Difference]: Finished difference Result 15826 states and 24687 transitions. [2022-01-10 19:07:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:49,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 74 [2022-01-10 19:07:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:49,538 INFO L225 Difference]: With dead ends: 15826 [2022-01-10 19:07:49,538 INFO L226 Difference]: Without dead ends: 8962 [2022-01-10 19:07:49,549 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 [2022-01-10 19:07:49,550 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 47 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:49,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 688 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:49,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8962 states. [2022-01-10 19:07:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8962 to 8962. [2022-01-10 19:07:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8962 states, 8961 states have (on average 1.5550719785738198) internal successors, (13935), 8961 states have internal predecessors, (13935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8962 states to 8962 states and 13935 transitions. [2022-01-10 19:07:50,372 INFO L78 Accepts]: Start accepts. Automaton has 8962 states and 13935 transitions. Word has length 74 [2022-01-10 19:07:50,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:50,372 INFO L470 AbstractCegarLoop]: Abstraction has 8962 states and 13935 transitions. [2022-01-10 19:07:50,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:50,372 INFO L276 IsEmpty]: Start isEmpty. Operand 8962 states and 13935 transitions. [2022-01-10 19:07:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 19:07:50,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:50,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:07:50,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:07:50,374 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:50,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:50,374 INFO L85 PathProgramCache]: Analyzing trace with hash -781213159, now seen corresponding path program 1 times [2022-01-10 19:07:50,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:50,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091326850] [2022-01-10 19:07:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:50,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:50,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:50,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091326850] [2022-01-10 19:07:50,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091326850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:50,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:50,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:07:50,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427885251] [2022-01-10 19:07:50,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:50,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:07:50,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:50,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:07:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:07:50,479 INFO L87 Difference]: Start difference. First operand 8962 states and 13935 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:51,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:51,788 INFO L93 Difference]: Finished difference Result 23730 states and 36821 transitions. [2022-01-10 19:07:51,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:07:51,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2022-01-10 19:07:51,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:51,817 INFO L225 Difference]: With dead ends: 23730 [2022-01-10 19:07:51,817 INFO L226 Difference]: Without dead ends: 14812 [2022-01-10 19:07:51,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:07:51,830 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 570 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:51,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 911 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14812 states. [2022-01-10 19:07:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14812 to 9118. [2022-01-10 19:07:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9118 states, 9117 states have (on average 1.547877591312932) internal successors, (14112), 9117 states have internal predecessors, (14112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9118 states to 9118 states and 14112 transitions. [2022-01-10 19:07:52,722 INFO L78 Accepts]: Start accepts. Automaton has 9118 states and 14112 transitions. Word has length 74 [2022-01-10 19:07:52,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:52,722 INFO L470 AbstractCegarLoop]: Abstraction has 9118 states and 14112 transitions. [2022-01-10 19:07:52,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:52,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9118 states and 14112 transitions. [2022-01-10 19:07:52,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 19:07:52,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:52,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:07:52,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:07:52,724 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:52,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:52,725 INFO L85 PathProgramCache]: Analyzing trace with hash -285297283, now seen corresponding path program 1 times [2022-01-10 19:07:52,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:52,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094165741] [2022-01-10 19:07:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:52,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:52,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:52,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094165741] [2022-01-10 19:07:52,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094165741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:52,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:52,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:52,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919332302] [2022-01-10 19:07:52,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:52,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:52,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:52,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:52,787 INFO L87 Difference]: Start difference. First operand 9118 states and 14112 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:53,583 INFO L93 Difference]: Finished difference Result 16816 states and 26005 transitions. [2022-01-10 19:07:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:53,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 74 [2022-01-10 19:07:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:53,597 INFO L225 Difference]: With dead ends: 16816 [2022-01-10 19:07:53,597 INFO L226 Difference]: Without dead ends: 7734 [2022-01-10 19:07:53,605 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 [2022-01-10 19:07:53,606 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 47 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:53,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 683 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:53,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7734 states. [2022-01-10 19:07:54,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7734 to 7734. [2022-01-10 19:07:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7734 states, 7733 states have (on average 1.544290702185439) internal successors, (11942), 7733 states have internal predecessors, (11942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7734 states to 7734 states and 11942 transitions. [2022-01-10 19:07:54,304 INFO L78 Accepts]: Start accepts. Automaton has 7734 states and 11942 transitions. Word has length 74 [2022-01-10 19:07:54,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:54,304 INFO L470 AbstractCegarLoop]: Abstraction has 7734 states and 11942 transitions. [2022-01-10 19:07:54,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 7734 states and 11942 transitions. [2022-01-10 19:07:54,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:07:54,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:54,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:07:54,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:07:54,306 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:54,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash -947000846, now seen corresponding path program 1 times [2022-01-10 19:07:54,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:54,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453629148] [2022-01-10 19:07:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:54,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:54,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:54,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453629148] [2022-01-10 19:07:54,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453629148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:54,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:54,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:54,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639545172] [2022-01-10 19:07:54,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:54,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:54,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:54,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:54,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:54,349 INFO L87 Difference]: Start difference. First operand 7734 states and 11942 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:55,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:55,280 INFO L93 Difference]: Finished difference Result 15458 states and 23862 transitions. [2022-01-10 19:07:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:55,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2022-01-10 19:07:55,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:55,300 INFO L225 Difference]: With dead ends: 15458 [2022-01-10 19:07:55,300 INFO L226 Difference]: Without dead ends: 10700 [2022-01-10 19:07:55,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:55,310 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 196 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:55,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 536 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:55,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10700 states. [2022-01-10 19:07:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10700 to 7734. [2022-01-10 19:07:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7734 states, 7733 states have (on average 1.5439027544290702) internal successors, (11939), 7733 states have internal predecessors, (11939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7734 states to 7734 states and 11939 transitions. [2022-01-10 19:07:56,025 INFO L78 Accepts]: Start accepts. Automaton has 7734 states and 11939 transitions. Word has length 77 [2022-01-10 19:07:56,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:56,025 INFO L470 AbstractCegarLoop]: Abstraction has 7734 states and 11939 transitions. [2022-01-10 19:07:56,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:56,025 INFO L276 IsEmpty]: Start isEmpty. Operand 7734 states and 11939 transitions. [2022-01-10 19:07:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 19:07:56,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:56,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:07:56,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:07:56,027 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:56,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:56,027 INFO L85 PathProgramCache]: Analyzing trace with hash 671320266, now seen corresponding path program 1 times [2022-01-10 19:07:56,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:56,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372739479] [2022-01-10 19:07:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:56,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:07:56,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:56,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372739479] [2022-01-10 19:07:56,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372739479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:56,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:56,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:56,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287796469] [2022-01-10 19:07:56,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:56,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:56,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:56,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:56,132 INFO L87 Difference]: Start difference. First operand 7734 states and 11939 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:07:58,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:07:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:59,717 INFO L93 Difference]: Finished difference Result 21282 states and 33237 transitions. [2022-01-10 19:07:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:59,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 19:07:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:59,735 INFO L225 Difference]: With dead ends: 21282 [2022-01-10 19:07:59,735 INFO L226 Difference]: Without dead ends: 14028 [2022-01-10 19:07:59,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:59,742 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 111 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:59,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 402 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 19:07:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14028 states. [2022-01-10 19:08:01,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14028 to 14026. [2022-01-10 19:08:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14026 states, 14025 states have (on average 1.5488770053475935) internal successors, (21723), 14025 states have internal predecessors, (21723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14026 states to 14026 states and 21723 transitions. [2022-01-10 19:08:01,250 INFO L78 Accepts]: Start accepts. Automaton has 14026 states and 21723 transitions. Word has length 78 [2022-01-10 19:08:01,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:01,251 INFO L470 AbstractCegarLoop]: Abstraction has 14026 states and 21723 transitions. [2022-01-10 19:08:01,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:01,251 INFO L276 IsEmpty]: Start isEmpty. Operand 14026 states and 21723 transitions. [2022-01-10 19:08:01,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:08:01,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:01,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:08:01,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:08:01,253 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:01,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash -433940494, now seen corresponding path program 1 times [2022-01-10 19:08:01,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:01,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923392893] [2022-01-10 19:08:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:01,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:01,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:01,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923392893] [2022-01-10 19:08:01,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923392893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:01,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:01,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:01,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892291404] [2022-01-10 19:08:01,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:01,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:01,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:01,322 INFO L87 Difference]: Start difference. First operand 14026 states and 21723 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:03,770 INFO L93 Difference]: Finished difference Result 35462 states and 55062 transitions. [2022-01-10 19:08:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:03,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 19:08:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:03,800 INFO L225 Difference]: With dead ends: 35462 [2022-01-10 19:08:03,801 INFO L226 Difference]: Without dead ends: 21916 [2022-01-10 19:08:03,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:03,812 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 134 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:03,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 565 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21916 states. [2022-01-10 19:08:06,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21916 to 21914. [2022-01-10 19:08:06,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21914 states, 21913 states have (on average 1.532058595354356) internal successors, (33572), 21913 states have internal predecessors, (33572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21914 states to 21914 states and 33572 transitions. [2022-01-10 19:08:06,438 INFO L78 Accepts]: Start accepts. Automaton has 21914 states and 33572 transitions. Word has length 80 [2022-01-10 19:08:06,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:06,438 INFO L470 AbstractCegarLoop]: Abstraction has 21914 states and 33572 transitions. [2022-01-10 19:08:06,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:06,439 INFO L276 IsEmpty]: Start isEmpty. Operand 21914 states and 33572 transitions. [2022-01-10 19:08:06,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:08:06,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:06,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:08:06,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:08:06,441 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:06,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:06,441 INFO L85 PathProgramCache]: Analyzing trace with hash -881664654, now seen corresponding path program 1 times [2022-01-10 19:08:06,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:06,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964427059] [2022-01-10 19:08:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:06,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:06,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:06,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964427059] [2022-01-10 19:08:06,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964427059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:06,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:06,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:06,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783531625] [2022-01-10 19:08:06,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:06,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:06,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:06,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:06,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:06,504 INFO L87 Difference]: Start difference. First operand 21914 states and 33572 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:10,325 INFO L93 Difference]: Finished difference Result 55294 states and 84846 transitions. [2022-01-10 19:08:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:10,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 19:08:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:10,378 INFO L225 Difference]: With dead ends: 55294 [2022-01-10 19:08:10,378 INFO L226 Difference]: Without dead ends: 34012 [2022-01-10 19:08:10,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:10,402 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 137 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:10,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 589 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34012 states. [2022-01-10 19:08:14,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34012 to 34010. [2022-01-10 19:08:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34010 states, 34009 states have (on average 1.5135993413508189) internal successors, (51476), 34009 states have internal predecessors, (51476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34010 states to 34010 states and 51476 transitions. [2022-01-10 19:08:14,568 INFO L78 Accepts]: Start accepts. Automaton has 34010 states and 51476 transitions. Word has length 80 [2022-01-10 19:08:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:14,569 INFO L470 AbstractCegarLoop]: Abstraction has 34010 states and 51476 transitions. [2022-01-10 19:08:14,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 34010 states and 51476 transitions. [2022-01-10 19:08:14,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 19:08:14,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:14,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:08:14,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:08:14,571 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:14,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:14,572 INFO L85 PathProgramCache]: Analyzing trace with hash 294258291, now seen corresponding path program 1 times [2022-01-10 19:08:14,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:14,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214568962] [2022-01-10 19:08:14,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:14,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:14,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:14,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214568962] [2022-01-10 19:08:14,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214568962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:14,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:14,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:14,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023754567] [2022-01-10 19:08:14,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:14,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:14,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:14,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:14,635 INFO L87 Difference]: Start difference. First operand 34010 states and 51476 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:19,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:19,885 INFO L93 Difference]: Finished difference Result 76230 states and 115758 transitions. [2022-01-10 19:08:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:19,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-01-10 19:08:19,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:19,954 INFO L225 Difference]: With dead ends: 76230 [2022-01-10 19:08:19,954 INFO L226 Difference]: Without dead ends: 47252 [2022-01-10 19:08:19,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:19,979 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 117 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:19,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 434 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:20,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47252 states. [2022-01-10 19:08:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47252 to 45762. [2022-01-10 19:08:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45762 states, 45761 states have (on average 1.500928738445401) internal successors, (68684), 45761 states have internal predecessors, (68684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45762 states to 45762 states and 68684 transitions. [2022-01-10 19:08:25,258 INFO L78 Accepts]: Start accepts. Automaton has 45762 states and 68684 transitions. Word has length 81 [2022-01-10 19:08:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:25,258 INFO L470 AbstractCegarLoop]: Abstraction has 45762 states and 68684 transitions. [2022-01-10 19:08:25,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 45762 states and 68684 transitions. [2022-01-10 19:08:25,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 19:08:25,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:25,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:08:25,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:08:25,261 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:25,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:25,261 INFO L85 PathProgramCache]: Analyzing trace with hash 834293096, now seen corresponding path program 1 times [2022-01-10 19:08:25,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:25,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583870489] [2022-01-10 19:08:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:25,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:25,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:25,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583870489] [2022-01-10 19:08:25,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583870489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:25,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:25,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:25,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989879357] [2022-01-10 19:08:25,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:25,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:25,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:25,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:25,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:25,355 INFO L87 Difference]: Start difference. First operand 45762 states and 68684 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:30,894 INFO L93 Difference]: Finished difference Result 93195 states and 139828 transitions. [2022-01-10 19:08:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-01-10 19:08:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:30,961 INFO L225 Difference]: With dead ends: 93195 [2022-01-10 19:08:30,962 INFO L226 Difference]: Without dead ends: 47592 [2022-01-10 19:08:30,994 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 [2022-01-10 19:08:30,994 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 492 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:30,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 411 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47592 states. [2022-01-10 19:08:36,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47592 to 45832. [2022-01-10 19:08:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45832 states, 45831 states have (on average 1.5000981868167833) internal successors, (68751), 45831 states have internal predecessors, (68751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:36,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45832 states to 45832 states and 68751 transitions. [2022-01-10 19:08:36,585 INFO L78 Accepts]: Start accepts. Automaton has 45832 states and 68751 transitions. Word has length 82 [2022-01-10 19:08:36,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:36,586 INFO L470 AbstractCegarLoop]: Abstraction has 45832 states and 68751 transitions. [2022-01-10 19:08:36,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:08:36,586 INFO L276 IsEmpty]: Start isEmpty. Operand 45832 states and 68751 transitions. [2022-01-10 19:08:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 19:08:36,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:36,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:08:36,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:08:36,590 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:36,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:36,591 INFO L85 PathProgramCache]: Analyzing trace with hash 36381986, now seen corresponding path program 1 times [2022-01-10 19:08:36,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:36,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843402701] [2022-01-10 19:08:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:36,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:08:36,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:36,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843402701] [2022-01-10 19:08:36,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843402701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:36,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:36,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:36,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769630923] [2022-01-10 19:08:36,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:36,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:36,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:36,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:36,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:36,660 INFO L87 Difference]: Start difference. First operand 45832 states and 68751 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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)