/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:37:41,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:37:41,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:37:41,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:37:41,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:37:41,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:37:41,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:37:41,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:37:41,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:37:41,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:37:41,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:37:41,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:37:41,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:37:41,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:37:41,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:37:41,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:37:41,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:37:41,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:37:41,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:37:41,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:37:41,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:37:41,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:37:41,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:37:41,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:37:41,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:37:41,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:37:41,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:37:41,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:37:41,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:37:41,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:37:41,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:37:41,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:37:41,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:37:41,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:37:41,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:37:41,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:37:41,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:37:41,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:37:41,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:37:41,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:37:41,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:37:41,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:37:41,502 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:37:41,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:37:41,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:37:41,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:37:41,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:37:41,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:37:41,503 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:37:41,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:37:41,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:37:41,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:37:41,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:37:41,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:37:41,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:37:41,505 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:37:41,505 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:37:41,505 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:37:41,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:37:41,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:37:41,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:37:41,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:37:41,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:37:41,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:37:41,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:37:41,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:37:41,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:37:41,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:37:41,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:37:41,507 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:37:41,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:37:41,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:37:41,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:37:41,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:37:41,508 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:37:41,508 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:37:41,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:37:41,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:37:41,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:37:41,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:37:41,717 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:37:41,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 00:37:41,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b5d9b76/b511a82dba824261b06d071aa7cb3fa2/FLAGf82bd957b [2022-01-11 00:37:42,176 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:37:42,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 00:37:42,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b5d9b76/b511a82dba824261b06d071aa7cb3fa2/FLAGf82bd957b [2022-01-11 00:37:42,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b5d9b76/b511a82dba824261b06d071aa7cb3fa2 [2022-01-11 00:37:42,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:37:42,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:37:42,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:37:42,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:37:42,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:37:42,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:42,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e422846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42, skipping insertion in model container [2022-01-11 00:37:42,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:42,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:37:42,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:37:42,809 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_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12650,12663] [2022-01-11 00:37:42,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:37:42,893 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:37:42,947 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_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12650,12663] [2022-01-11 00:37:42,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:37:42,985 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:37:42,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42 WrapperNode [2022-01-11 00:37:42,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:37:42,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:37:42,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:37:42,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:37:42,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:43,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:43,043 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1241 [2022-01-11 00:37:43,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:37:43,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:37:43,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:37:43,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:37:43,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:43,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:43,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:43,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:43,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:43,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:43,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:43,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:37:43,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:37:43,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:37:43,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:37:43,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42" (1/1) ... [2022-01-11 00:37:43,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:37:43,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:37:43,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:37:43,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:37:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:37:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:37:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:37:43,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:37:43,339 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:37:43,340 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:37:44,114 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:37:44,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:37:44,121 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:37:44,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:37:44 BoogieIcfgContainer [2022-01-11 00:37:44,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:37:44,127 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:37:44,127 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:37:44,128 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:37:44,131 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:37:44" (1/1) ... [2022-01-11 00:37:44,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:37:44 BasicIcfg [2022-01-11 00:37:44,570 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:37:44,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:37:44,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:37:44,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:37:44,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:37:42" (1/4) ... [2022-01-11 00:37:44,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351e2e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:37:44, skipping insertion in model container [2022-01-11 00:37:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:37:42" (2/4) ... [2022-01-11 00:37:44,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351e2e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:37:44, skipping insertion in model container [2022-01-11 00:37:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:37:44" (3/4) ... [2022-01-11 00:37:44,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351e2e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:37:44, skipping insertion in model container [2022-01-11 00:37:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:37:44" (4/4) ... [2022-01-11 00:37:44,577 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 00:37:44,583 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:37:44,583 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:37:44,629 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:37:44,634 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:37:44,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:37:44,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 312 states have (on average 1.7884615384615385) internal successors, (558), 313 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:37:44,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:44,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:44,669 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:44,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1017258884, now seen corresponding path program 1 times [2022-01-11 00:37:44,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:44,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255170008] [2022-01-11 00:37:44,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:44,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:45,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:45,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255170008] [2022-01-11 00:37:45,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255170008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:45,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:45,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:45,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92297692] [2022-01-11 00:37:45,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:45,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:45,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:45,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:45,264 INFO L87 Difference]: Start difference. First operand has 314 states, 312 states have (on average 1.7884615384615385) internal successors, (558), 313 states have internal predecessors, (558), 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 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:47,350 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 [] [2022-01-11 00:37:47,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:47,557 INFO L93 Difference]: Finished difference Result 577 states and 997 transitions. [2022-01-11 00:37:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:47,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2022-01-11 00:37:47,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:47,582 INFO L225 Difference]: With dead ends: 577 [2022-01-11 00:37:47,582 INFO L226 Difference]: Without dead ends: 434 [2022-01-11 00:37:47,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:47,590 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 220 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:47,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1051 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 00:37:47,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-01-11 00:37:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2022-01-11 00:37:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.6790697674418604) internal successors, (722), 430 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:47,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 722 transitions. [2022-01-11 00:37:47,644 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 722 transitions. Word has length 98 [2022-01-11 00:37:47,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:47,644 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 722 transitions. [2022-01-11 00:37:47,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:47,645 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 722 transitions. [2022-01-11 00:37:47,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-11 00:37:47,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:47,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:47,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:37:47,648 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:47,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1885611638, now seen corresponding path program 1 times [2022-01-11 00:37:47,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:47,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933539588] [2022-01-11 00:37:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:47,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:47,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:47,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933539588] [2022-01-11 00:37:47,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933539588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:47,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:47,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:37:47,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950054433] [2022-01-11 00:37:47,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:47,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:37:47,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:47,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:37:47,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:47,879 INFO L87 Difference]: Start difference. First operand 431 states and 722 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:48,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:48,007 INFO L93 Difference]: Finished difference Result 1227 states and 2049 transitions. [2022-01-11 00:37:48,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:37:48,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 101 [2022-01-11 00:37:48,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:48,012 INFO L225 Difference]: With dead ends: 1227 [2022-01-11 00:37:48,012 INFO L226 Difference]: Without dead ends: 843 [2022-01-11 00:37:48,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:48,016 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 1412 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:48,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 1028 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:37:48,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-11 00:37:48,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-01-11 00:37:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 1.6702380952380953) internal successors, (1403), 840 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1403 transitions. [2022-01-11 00:37:48,100 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1403 transitions. Word has length 101 [2022-01-11 00:37:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:48,101 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1403 transitions. [2022-01-11 00:37:48,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1403 transitions. [2022-01-11 00:37:48,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 00:37:48,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:48,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:48,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:37:48,113 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:48,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash 23462841, now seen corresponding path program 1 times [2022-01-11 00:37:48,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:48,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696348235] [2022-01-11 00:37:48,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:48,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:48,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:48,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696348235] [2022-01-11 00:37:48,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696348235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:48,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:48,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:48,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130087494] [2022-01-11 00:37:48,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:48,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:48,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:48,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:48,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:48,266 INFO L87 Difference]: Start difference. First operand 841 states and 1403 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:48,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:48,308 INFO L93 Difference]: Finished difference Result 1315 states and 2208 transitions. [2022-01-11 00:37:48,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:48,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2022-01-11 00:37:48,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:48,313 INFO L225 Difference]: With dead ends: 1315 [2022-01-11 00:37:48,313 INFO L226 Difference]: Without dead ends: 1052 [2022-01-11 00:37:48,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:48,317 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 205 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1180 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 [2022-01-11 00:37:48,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-01-11 00:37:48,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1050. [2022-01-11 00:37:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1049 states have (on average 1.6758817921830313) internal successors, (1758), 1049 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:48,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1758 transitions. [2022-01-11 00:37:48,362 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1758 transitions. Word has length 103 [2022-01-11 00:37:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:48,363 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1758 transitions. [2022-01-11 00:37:48,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1758 transitions. [2022-01-11 00:37:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 00:37:48,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:48,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:48,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:37:48,368 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1359669679, now seen corresponding path program 1 times [2022-01-11 00:37:48,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:48,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078743123] [2022-01-11 00:37:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:48,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:48,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:48,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078743123] [2022-01-11 00:37:48,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078743123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:48,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:48,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:37:48,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534304373] [2022-01-11 00:37:48,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:48,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:37:48,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:48,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:37:48,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:48,547 INFO L87 Difference]: Start difference. First operand 1050 states and 1758 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:48,796 INFO L93 Difference]: Finished difference Result 4097 states and 6851 transitions. [2022-01-11 00:37:48,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:37:48,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 103 [2022-01-11 00:37:48,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:48,807 INFO L225 Difference]: With dead ends: 4097 [2022-01-11 00:37:48,807 INFO L226 Difference]: Without dead ends: 3059 [2022-01-11 00:37:48,809 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 [2022-01-11 00:37:48,814 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 1402 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:48,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 2173 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:37:48,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2022-01-11 00:37:48,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2060. [2022-01-11 00:37:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2059 states have (on average 1.6653715395823214) internal successors, (3429), 2059 states have internal predecessors, (3429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:48,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3429 transitions. [2022-01-11 00:37:48,950 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3429 transitions. Word has length 103 [2022-01-11 00:37:48,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:48,951 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 3429 transitions. [2022-01-11 00:37:48,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:48,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3429 transitions. [2022-01-11 00:37:48,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-11 00:37:48,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:48,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:48,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:37:48,954 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:48,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1600139910, now seen corresponding path program 1 times [2022-01-11 00:37:48,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:48,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451036016] [2022-01-11 00:37:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:48,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:49,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:49,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451036016] [2022-01-11 00:37:49,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451036016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:49,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:49,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:49,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833922080] [2022-01-11 00:37:49,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:49,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:49,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:49,010 INFO L87 Difference]: Start difference. First operand 2060 states and 3429 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:49,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:49,240 INFO L93 Difference]: Finished difference Result 6123 states and 10189 transitions. [2022-01-11 00:37:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:49,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2022-01-11 00:37:49,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:49,253 INFO L225 Difference]: With dead ends: 6123 [2022-01-11 00:37:49,253 INFO L226 Difference]: Without dead ends: 4092 [2022-01-11 00:37:49,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:49,257 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 502 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1531 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 [2022-01-11 00:37:49,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 1531 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:49,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4092 states. [2022-01-11 00:37:49,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4092 to 2074. [2022-01-11 00:37:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 1.6623251326579835) internal successors, (3446), 2073 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3446 transitions. [2022-01-11 00:37:49,383 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3446 transitions. Word has length 105 [2022-01-11 00:37:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:49,387 INFO L470 AbstractCegarLoop]: Abstraction has 2074 states and 3446 transitions. [2022-01-11 00:37:49,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3446 transitions. [2022-01-11 00:37:49,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 00:37:49,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:49,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:49,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:37:49,390 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1376927051, now seen corresponding path program 1 times [2022-01-11 00:37:49,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:49,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976621889] [2022-01-11 00:37:49,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:49,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:49,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:49,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976621889] [2022-01-11 00:37:49,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976621889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:49,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:49,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:37:49,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518850617] [2022-01-11 00:37:49,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:49,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:37:49,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:49,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:37:49,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:49,555 INFO L87 Difference]: Start difference. First operand 2074 states and 3446 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:49,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:49,865 INFO L93 Difference]: Finished difference Result 6025 states and 10010 transitions. [2022-01-11 00:37:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:37:49,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 106 [2022-01-11 00:37:49,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:49,877 INFO L225 Difference]: With dead ends: 6025 [2022-01-11 00:37:49,877 INFO L226 Difference]: Without dead ends: 4071 [2022-01-11 00:37:49,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:49,880 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 1218 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:49,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 1211 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2022-01-11 00:37:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4069. [2022-01-11 00:37:50,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 4068 states have (on average 1.6543756145526056) internal successors, (6730), 4068 states have internal predecessors, (6730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 6730 transitions. [2022-01-11 00:37:50,143 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 6730 transitions. Word has length 106 [2022-01-11 00:37:50,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:50,143 INFO L470 AbstractCegarLoop]: Abstraction has 4069 states and 6730 transitions. [2022-01-11 00:37:50,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:50,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 6730 transitions. [2022-01-11 00:37:50,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 00:37:50,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:50,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:50,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:37:50,147 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:50,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:50,147 INFO L85 PathProgramCache]: Analyzing trace with hash 168848835, now seen corresponding path program 1 times [2022-01-11 00:37:50,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:50,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089362775] [2022-01-11 00:37:50,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:50,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:50,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:50,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089362775] [2022-01-11 00:37:50,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089362775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:50,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:50,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:37:50,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935692178] [2022-01-11 00:37:50,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:50,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:37:50,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:50,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:37:50,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:50,216 INFO L87 Difference]: Start difference. First operand 4069 states and 6730 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:50,870 INFO L93 Difference]: Finished difference Result 14187 states and 23327 transitions. [2022-01-11 00:37:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:37:50,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 107 [2022-01-11 00:37:50,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:50,909 INFO L225 Difference]: With dead ends: 14187 [2022-01-11 00:37:50,909 INFO L226 Difference]: Without dead ends: 10677 [2022-01-11 00:37:50,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:37:50,916 INFO L933 BasicCegarLoop]: 1187 mSDtfsCounter, 1182 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 2576 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 [2022-01-11 00:37:50,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 2576 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10677 states. [2022-01-11 00:37:51,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10677 to 4557. [2022-01-11 00:37:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4557 states, 4556 states have (on average 1.6589113257243195) internal successors, (7558), 4556 states have internal predecessors, (7558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 7558 transitions. [2022-01-11 00:37:51,278 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 7558 transitions. Word has length 107 [2022-01-11 00:37:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:51,278 INFO L470 AbstractCegarLoop]: Abstraction has 4557 states and 7558 transitions. [2022-01-11 00:37:51,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 7558 transitions. [2022-01-11 00:37:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 00:37:51,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:51,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:51,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:37:51,282 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:51,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:51,283 INFO L85 PathProgramCache]: Analyzing trace with hash -282876050, now seen corresponding path program 1 times [2022-01-11 00:37:51,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:51,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754144548] [2022-01-11 00:37:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:51,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:51,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:51,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754144548] [2022-01-11 00:37:51,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754144548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:51,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:51,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:51,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456158990] [2022-01-11 00:37:51,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:51,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:51,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:51,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:51,422 INFO L87 Difference]: Start difference. First operand 4557 states and 7558 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:53,539 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 [] [2022-01-11 00:37:54,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:54,112 INFO L93 Difference]: Finished difference Result 9789 states and 16268 transitions. [2022-01-11 00:37:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:54,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2022-01-11 00:37:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:54,126 INFO L225 Difference]: With dead ends: 9789 [2022-01-11 00:37:54,126 INFO L226 Difference]: Without dead ends: 7071 [2022-01-11 00:37:54,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:54,130 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 197 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:54,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 1026 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 00:37:54,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2022-01-11 00:37:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7045. [2022-01-11 00:37:54,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7045 states, 7044 states have (on average 1.654457694491766) internal successors, (11654), 7044 states have internal predecessors, (11654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 11654 transitions. [2022-01-11 00:37:54,690 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 11654 transitions. Word has length 108 [2022-01-11 00:37:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:54,691 INFO L470 AbstractCegarLoop]: Abstraction has 7045 states and 11654 transitions. [2022-01-11 00:37:54,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 11654 transitions. [2022-01-11 00:37:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-11 00:37:54,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:54,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:54,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:37:54,699 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:54,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:54,700 INFO L85 PathProgramCache]: Analyzing trace with hash -966697379, now seen corresponding path program 1 times [2022-01-11 00:37:54,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:54,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997021216] [2022-01-11 00:37:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:54,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:54,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:54,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997021216] [2022-01-11 00:37:54,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997021216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:54,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:54,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:54,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463064160] [2022-01-11 00:37:54,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:54,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:54,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:54,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:54,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:54,844 INFO L87 Difference]: Start difference. First operand 7045 states and 11654 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:55,699 INFO L93 Difference]: Finished difference Result 19343 states and 31869 transitions. [2022-01-11 00:37:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:55,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 111 [2022-01-11 00:37:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:55,726 INFO L225 Difference]: With dead ends: 19343 [2022-01-11 00:37:55,727 INFO L226 Difference]: Without dead ends: 13359 [2022-01-11 00:37:55,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:55,738 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 400 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:37:55,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1452 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:55,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13359 states. [2022-01-11 00:37:56,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13359 to 13357. [2022-01-11 00:37:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13357 states, 13356 states have (on average 1.6431566337226715) internal successors, (21946), 13356 states have internal predecessors, (21946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13357 states to 13357 states and 21946 transitions. [2022-01-11 00:37:56,779 INFO L78 Accepts]: Start accepts. Automaton has 13357 states and 21946 transitions. Word has length 111 [2022-01-11 00:37:56,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:56,780 INFO L470 AbstractCegarLoop]: Abstraction has 13357 states and 21946 transitions. [2022-01-11 00:37:56,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:56,780 INFO L276 IsEmpty]: Start isEmpty. Operand 13357 states and 21946 transitions. [2022-01-11 00:37:56,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-11 00:37:56,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:56,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:56,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:37:56,793 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1046807679, now seen corresponding path program 1 times [2022-01-11 00:37:56,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:56,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486742884] [2022-01-11 00:37:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:56,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:56,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:56,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486742884] [2022-01-11 00:37:56,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486742884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:56,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:56,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:37:56,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396972400] [2022-01-11 00:37:56,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:56,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:37:56,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:56,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:37:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:56,844 INFO L87 Difference]: Start difference. First operand 13357 states and 21946 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:58,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:37:58,126 INFO L93 Difference]: Finished difference Result 26542 states and 43494 transitions. [2022-01-11 00:37:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:37:58,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 111 [2022-01-11 00:37:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:37:58,183 INFO L225 Difference]: With dead ends: 26542 [2022-01-11 00:37:58,183 INFO L226 Difference]: Without dead ends: 19577 [2022-01-11 00:37:58,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:37:58,196 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 502 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1044 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 [2022-01-11 00:37:58,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 1044 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:37:58,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19577 states. [2022-01-11 00:37:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19577 to 13357. [2022-01-11 00:37:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13357 states, 13356 states have (on average 1.64240790655885) internal successors, (21936), 13356 states have internal predecessors, (21936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13357 states to 13357 states and 21936 transitions. [2022-01-11 00:37:59,094 INFO L78 Accepts]: Start accepts. Automaton has 13357 states and 21936 transitions. Word has length 111 [2022-01-11 00:37:59,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:37:59,095 INFO L470 AbstractCegarLoop]: Abstraction has 13357 states and 21936 transitions. [2022-01-11 00:37:59,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:37:59,095 INFO L276 IsEmpty]: Start isEmpty. Operand 13357 states and 21936 transitions. [2022-01-11 00:37:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-11 00:37:59,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:37:59,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:37:59,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:37:59,103 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:37:59,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:37:59,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1873602983, now seen corresponding path program 1 times [2022-01-11 00:37:59,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:37:59,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856936321] [2022-01-11 00:37:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:37:59,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:37:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:37:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:37:59,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:37:59,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856936321] [2022-01-11 00:37:59,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856936321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:37:59,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:37:59,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:37:59,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117022586] [2022-01-11 00:37:59,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:37:59,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:37:59,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:37:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:37:59,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:37:59,191 INFO L87 Difference]: Start difference. First operand 13357 states and 21936 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:00,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:00,933 INFO L93 Difference]: Finished difference Result 36886 states and 60471 transitions. [2022-01-11 00:38:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:38:00,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 112 [2022-01-11 00:38:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:00,975 INFO L225 Difference]: With dead ends: 36886 [2022-01-11 00:38:00,975 INFO L226 Difference]: Without dead ends: 23876 [2022-01-11 00:38:00,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:38:00,999 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 985 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:00,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 1333 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23876 states. [2022-01-11 00:38:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23876 to 13572. [2022-01-11 00:38:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13572 states, 13571 states have (on average 1.6403360106108613) internal successors, (22261), 13571 states have internal predecessors, (22261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13572 states to 13572 states and 22261 transitions. [2022-01-11 00:38:02,173 INFO L78 Accepts]: Start accepts. Automaton has 13572 states and 22261 transitions. Word has length 112 [2022-01-11 00:38:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:02,173 INFO L470 AbstractCegarLoop]: Abstraction has 13572 states and 22261 transitions. [2022-01-11 00:38:02,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 13572 states and 22261 transitions. [2022-01-11 00:38:02,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-11 00:38:02,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:02,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:38:02,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:38:02,182 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:02,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:02,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1959021653, now seen corresponding path program 1 times [2022-01-11 00:38:02,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:02,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878831454] [2022-01-11 00:38:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:02,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:38:02,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:02,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878831454] [2022-01-11 00:38:02,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878831454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:02,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:02,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:38:02,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822467985] [2022-01-11 00:38:02,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:02,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:38:02,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:02,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:38:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:38:02,283 INFO L87 Difference]: Start difference. First operand 13572 states and 22261 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:04,367 INFO L93 Difference]: Finished difference Result 38995 states and 63972 transitions. [2022-01-11 00:38:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:38:04,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 112 [2022-01-11 00:38:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:04,406 INFO L225 Difference]: With dead ends: 38995 [2022-01-11 00:38:04,406 INFO L226 Difference]: Without dead ends: 26287 [2022-01-11 00:38:04,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:38:04,423 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 1332 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:04,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1332 Valid, 1028 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26287 states. [2022-01-11 00:38:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26287 to 26285. [2022-01-11 00:38:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26285 states, 26284 states have (on average 1.633997869426267) internal successors, (42948), 26284 states have internal predecessors, (42948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26285 states to 26285 states and 42948 transitions. [2022-01-11 00:38:06,857 INFO L78 Accepts]: Start accepts. Automaton has 26285 states and 42948 transitions. Word has length 112 [2022-01-11 00:38:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:06,865 INFO L470 AbstractCegarLoop]: Abstraction has 26285 states and 42948 transitions. [2022-01-11 00:38:06,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 26285 states and 42948 transitions. [2022-01-11 00:38:06,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-11 00:38:06,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:06,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:38:06,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:38:06,882 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:06,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1020459782, now seen corresponding path program 1 times [2022-01-11 00:38:06,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:06,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630954958] [2022-01-11 00:38:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:06,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:38:06,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:06,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630954958] [2022-01-11 00:38:06,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630954958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:06,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:06,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:38:06,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305307336] [2022-01-11 00:38:06,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:06,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:38:06,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:06,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:38:06,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:38:06,957 INFO L87 Difference]: Start difference. First operand 26285 states and 42948 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:09,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:09,741 INFO L93 Difference]: Finished difference Result 45281 states and 74438 transitions. [2022-01-11 00:38:09,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:38:09,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2022-01-11 00:38:09,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:09,793 INFO L225 Difference]: With dead ends: 45281 [2022-01-11 00:38:09,793 INFO L226 Difference]: Without dead ends: 34831 [2022-01-11 00:38:09,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:38:09,810 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 196 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1162 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 [2022-01-11 00:38:09,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 1162 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:09,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34831 states. [2022-01-11 00:38:12,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34831 to 34829. [2022-01-11 00:38:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34829 states, 34828 states have (on average 1.6360399678419661) internal successors, (56980), 34828 states have internal predecessors, (56980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34829 states to 34829 states and 56980 transitions. [2022-01-11 00:38:12,893 INFO L78 Accepts]: Start accepts. Automaton has 34829 states and 56980 transitions. Word has length 114 [2022-01-11 00:38:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:12,893 INFO L470 AbstractCegarLoop]: Abstraction has 34829 states and 56980 transitions. [2022-01-11 00:38:12,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:12,894 INFO L276 IsEmpty]: Start isEmpty. Operand 34829 states and 56980 transitions. [2022-01-11 00:38:12,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-11 00:38:12,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:12,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:38:12,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:38:12,907 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:12,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash 345322606, now seen corresponding path program 1 times [2022-01-11 00:38:12,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:12,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561735572] [2022-01-11 00:38:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:12,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:38:13,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:13,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561735572] [2022-01-11 00:38:13,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561735572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:13,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:13,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:38:13,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633130473] [2022-01-11 00:38:13,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:13,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:38:13,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:38:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:38:13,002 INFO L87 Difference]: Start difference. First operand 34829 states and 56980 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:18,732 INFO L93 Difference]: Finished difference Result 99746 states and 162950 transitions. [2022-01-11 00:38:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:38:18,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2022-01-11 00:38:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:18,854 INFO L225 Difference]: With dead ends: 99746 [2022-01-11 00:38:18,855 INFO L226 Difference]: Without dead ends: 67680 [2022-01-11 00:38:18,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:38:18,902 INFO L933 BasicCegarLoop]: 970 mSDtfsCounter, 388 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:18,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1472 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:38:18,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67680 states. [2022-01-11 00:38:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67680 to 67678. [2022-01-11 00:38:25,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67678 states, 67677 states have (on average 1.6268156094389528) internal successors, (110098), 67677 states have internal predecessors, (110098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67678 states to 67678 states and 110098 transitions. [2022-01-11 00:38:25,339 INFO L78 Accepts]: Start accepts. Automaton has 67678 states and 110098 transitions. Word has length 114 [2022-01-11 00:38:25,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:25,339 INFO L470 AbstractCegarLoop]: Abstraction has 67678 states and 110098 transitions. [2022-01-11 00:38:25,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:25,339 INFO L276 IsEmpty]: Start isEmpty. Operand 67678 states and 110098 transitions. [2022-01-11 00:38:25,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-11 00:38:25,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:25,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:38:25,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:38:25,372 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:25,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:25,372 INFO L85 PathProgramCache]: Analyzing trace with hash -625647812, now seen corresponding path program 1 times [2022-01-11 00:38:25,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:25,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510610822] [2022-01-11 00:38:25,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:25,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:38:25,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:25,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510610822] [2022-01-11 00:38:25,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510610822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:25,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:25,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:38:25,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491313635] [2022-01-11 00:38:25,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:25,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:38:25,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:25,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:38:25,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:38:25,488 INFO L87 Difference]: Start difference. First operand 67678 states and 110098 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:35,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:38:35,158 INFO L93 Difference]: Finished difference Result 172953 states and 280501 transitions. [2022-01-11 00:38:35,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:38:35,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 114 [2022-01-11 00:38:35,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:38:35,509 INFO L225 Difference]: With dead ends: 172953 [2022-01-11 00:38:35,509 INFO L226 Difference]: Without dead ends: 106592 [2022-01-11 00:38:35,597 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 [2022-01-11 00:38:35,597 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1399 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:38:35,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1399 Valid, 2150 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:38:35,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106592 states. [2022-01-11 00:38:42,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106592 to 68356. [2022-01-11 00:38:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68356 states, 68355 states have (on average 1.626654963060493) internal successors, (111190), 68355 states have internal predecessors, (111190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68356 states to 68356 states and 111190 transitions. [2022-01-11 00:38:42,776 INFO L78 Accepts]: Start accepts. Automaton has 68356 states and 111190 transitions. Word has length 114 [2022-01-11 00:38:42,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:38:42,778 INFO L470 AbstractCegarLoop]: Abstraction has 68356 states and 111190 transitions. [2022-01-11 00:38:42,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:38:42,778 INFO L276 IsEmpty]: Start isEmpty. Operand 68356 states and 111190 transitions. [2022-01-11 00:38:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-11 00:38:42,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:38:42,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:38:42,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:38:42,820 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:38:42,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:38:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash 745953521, now seen corresponding path program 1 times [2022-01-11 00:38:42,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:38:42,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749963130] [2022-01-11 00:38:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:38:42,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:38:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:38:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:38:42,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:38:42,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749963130] [2022-01-11 00:38:42,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749963130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:38:42,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:38:42,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:38:42,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470786067] [2022-01-11 00:38:42,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:38:42,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:38:42,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:38:42,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:38:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:38:42,874 INFO L87 Difference]: Start difference. First operand 68356 states and 111190 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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)