/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:38:00,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:38:00,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:38:00,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:38:00,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:38:00,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:38:00,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:38:00,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:38:00,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:38:00,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:38:00,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:38:00,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:38:00,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:38:00,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:38:00,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:38:00,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:38:00,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:38:00,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:38:00,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:38:00,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:38:00,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:38:00,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:38:00,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:38:00,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:38:00,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:38:00,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:38:00,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:38:00,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:38:00,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:38:00,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 07:38:00,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 07:38:00,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 07:38:00,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 07:38:00,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 07:38:00,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 07:38:00,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 07:38:00,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 07:38:00,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 07:38:00,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:38:00,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:38:00,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:38:00,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 07:38:00,295 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:38:00,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:38:00,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:38:00,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:38:00,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:38:00,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:38:00,297 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:38:00,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:38:00,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:38:00,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:38:00,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:38:00,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:38:00,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:38:00,298 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:38:00,298 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:38:00,298 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:38:00,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:38:00,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:38:00,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:38:00,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:38:00,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:38:00,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:38:00,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:38:00,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:38:00,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:38:00,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:38:00,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:38:00,300 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:38:00,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:38:00,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:38:00,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:38:00,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:38:00,301 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:38:00,301 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:38:00,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:38:00,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:38:00,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:38:00,513 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:38:00,514 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:38:00,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2022-01-11 07:38:00,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cacc397e/e801ef45e9e84b26b41fd5ae5189cc5b/FLAG2c4905bba [2022-01-11 07:38:01,071 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:38:01,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2022-01-11 07:38:01,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cacc397e/e801ef45e9e84b26b41fd5ae5189cc5b/FLAG2c4905bba [2022-01-11 07:38:01,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cacc397e/e801ef45e9e84b26b41fd5ae5189cc5b [2022-01-11 07:38:01,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:38:01,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:38:01,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:38:01,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:38:01,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:38:01,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:38:01" (1/1) ... [2022-01-11 07:38:01,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704e662b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:01, skipping insertion in model container [2022-01-11 07:38:01,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:38:01" (1/1) ... [2022-01-11 07:38:01,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:38:01,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:38:01,931 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[913,926] [2022-01-11 07:38:02,017 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[5977,5990] [2022-01-11 07:38:02,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:38:02,110 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:38:02,148 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[913,926] [2022-01-11 07:38:02,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[5977,5990] [2022-01-11 07:38:02,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:38:02,266 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:38:02,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02 WrapperNode [2022-01-11 07:38:02,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:38:02,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:38:02,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:38:02,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:38:02,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02" (1/1) ... [2022-01-11 07:38:02,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02" (1/1) ... [2022-01-11 07:38:02,353 INFO L137 Inliner]: procedures = 59, calls = 64, calls flagged for inlining = 59, calls inlined = 114, statements flattened = 1606 [2022-01-11 07:38:02,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:38:02,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:38:02,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:38:02,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:38:02,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02" (1/1) ... [2022-01-11 07:38:02,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02" (1/1) ... [2022-01-11 07:38:02,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02" (1/1) ... [2022-01-11 07:38:02,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02" (1/1) ... [2022-01-11 07:38:02,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02" (1/1) ... [2022-01-11 07:38:02,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02" (1/1) ... [2022-01-11 07:38:02,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02" (1/1) ... [2022-01-11 07:38:02,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:38:02,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:38:02,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:38:02,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:38:02,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02" (1/1) ... [2022-01-11 07:38:02,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:38:02,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:38:02,505 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 07:38:02,522 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 07:38:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:38:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:38:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:38:02,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:38:02,699 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:38:02,701 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:38:03,502 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:38:03,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:38:03,510 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-01-11 07:38:03,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:38:03 BoogieIcfgContainer [2022-01-11 07:38:03,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:38:03,512 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:38:03,512 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:38:03,516 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:38:03,518 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:38:03" (1/1) ... [2022-01-11 07:38:03,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:38:03 BasicIcfg [2022-01-11 07:38:03,786 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:38:03,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:38:03,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:38:03,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:38:03,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:38:01" (1/4) ... [2022-01-11 07:38:03,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0ec0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:38:03, skipping insertion in model container [2022-01-11 07:38:03,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:38:02" (2/4) ... [2022-01-11 07:38:03,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0ec0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:38:03, skipping insertion in model container [2022-01-11 07:38:03,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:38:03" (3/4) ... [2022-01-11 07:38:03,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0ec0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:38:03, skipping insertion in model container [2022-01-11 07:38:03,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:38:03" (4/4) ... [2022-01-11 07:38:03,792 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-2.cTransformedIcfg [2022-01-11 07:38:03,797 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:38:03,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-11 07:38:03,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:38:03,888 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 07:38:03,888 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-11 07:38:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 640 states, 635 states have (on average 1.5385826771653544) internal successors, (977), 639 states have internal predecessors, (977), 0 states have call successors, (0), 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 07:38:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 07:38:03,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:03,932 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] [2022-01-11 07:38:03,932 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:03,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash -246763492, now seen corresponding path program 1 times [2022-01-11 07:38:03,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:03,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092631279] [2022-01-11 07:38:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:03,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:04,223 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 07:38:04,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:04,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092631279] [2022-01-11 07:38:04,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092631279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:04,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:04,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:04,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028579843] [2022-01-11 07:38:04,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:04,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:04,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:04,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:04,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:04,246 INFO L87 Difference]: Start difference. First operand has 640 states, 635 states have (on average 1.5385826771653544) internal successors, (977), 639 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 07:38:04,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:04,347 INFO L93 Difference]: Finished difference Result 1262 states and 1919 transitions. [2022-01-11 07:38:04,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:04,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 07:38:04,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:04,360 INFO L225 Difference]: With dead ends: 1262 [2022-01-11 07:38:04,360 INFO L226 Difference]: Without dead ends: 694 [2022-01-11 07:38:04,364 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 07:38:04,366 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 916 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:04,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 1049 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:04,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-01-11 07:38:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 673. [2022-01-11 07:38:04,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 669 states have (on average 1.4902840059790732) internal successors, (997), 672 states have internal predecessors, (997), 0 states have call successors, (0), 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 07:38:04,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 997 transitions. [2022-01-11 07:38:04,427 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 997 transitions. Word has length 36 [2022-01-11 07:38:04,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:04,427 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 997 transitions. [2022-01-11 07:38:04,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 07:38:04,428 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 997 transitions. [2022-01-11 07:38:04,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 07:38:04,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:04,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:04,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:38:04,429 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:04,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:04,430 INFO L85 PathProgramCache]: Analyzing trace with hash -972631102, now seen corresponding path program 1 times [2022-01-11 07:38:04,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:04,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349042067] [2022-01-11 07:38:04,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:04,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:04,517 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 07:38:04,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:04,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349042067] [2022-01-11 07:38:04,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349042067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:04,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:04,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:04,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523927635] [2022-01-11 07:38:04,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:04,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:04,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:04,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:04,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:04,524 INFO L87 Difference]: Start difference. First operand 673 states and 997 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:38:04,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:04,583 INFO L93 Difference]: Finished difference Result 886 states and 1291 transitions. [2022-01-11 07:38:04,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:04,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-11 07:38:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:04,588 INFO L225 Difference]: With dead ends: 886 [2022-01-11 07:38:04,588 INFO L226 Difference]: Without dead ends: 775 [2022-01-11 07:38:04,591 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 07:38:04,592 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 907 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:04,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 1022 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:04,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-01-11 07:38:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 771. [2022-01-11 07:38:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 767 states have (on average 1.4732724902216427) internal successors, (1130), 770 states have internal predecessors, (1130), 0 states have call successors, (0), 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 07:38:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1130 transitions. [2022-01-11 07:38:04,613 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1130 transitions. Word has length 37 [2022-01-11 07:38:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:04,613 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 1130 transitions. [2022-01-11 07:38:04,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:38:04,613 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1130 transitions. [2022-01-11 07:38:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 07:38:04,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:04,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:04,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:38:04,615 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1595483868, now seen corresponding path program 1 times [2022-01-11 07:38:04,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:04,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927174866] [2022-01-11 07:38:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:04,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:04,700 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 07:38:04,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:04,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927174866] [2022-01-11 07:38:04,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927174866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:04,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:04,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:04,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790204188] [2022-01-11 07:38:04,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:04,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:04,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:04,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:04,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:04,702 INFO L87 Difference]: Start difference. First operand 771 states and 1130 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:38:04,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:04,734 INFO L93 Difference]: Finished difference Result 1090 states and 1569 transitions. [2022-01-11 07:38:04,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:04,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-11 07:38:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:04,739 INFO L225 Difference]: With dead ends: 1090 [2022-01-11 07:38:04,739 INFO L226 Difference]: Without dead ends: 881 [2022-01-11 07:38:04,741 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 07:38:04,744 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 60 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:04,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1831 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:04,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-01-11 07:38:04,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 857. [2022-01-11 07:38:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 853 states have (on average 1.4607268464243846) internal successors, (1246), 856 states have internal predecessors, (1246), 0 states have call successors, (0), 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 07:38:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1246 transitions. [2022-01-11 07:38:04,762 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1246 transitions. Word has length 37 [2022-01-11 07:38:04,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:04,763 INFO L470 AbstractCegarLoop]: Abstraction has 857 states and 1246 transitions. [2022-01-11 07:38:04,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:38:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1246 transitions. [2022-01-11 07:38:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 07:38:04,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:04,769 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:04,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:38:04,770 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:04,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:04,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1192533879, now seen corresponding path program 1 times [2022-01-11 07:38:04,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:04,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447649985] [2022-01-11 07:38:04,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:04,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:04,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:04,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447649985] [2022-01-11 07:38:04,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447649985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:04,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:04,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:04,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085746383] [2022-01-11 07:38:04,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:04,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:04,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:04,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:04,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:04,841 INFO L87 Difference]: Start difference. First operand 857 states and 1246 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 07:38:04,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:04,881 INFO L93 Difference]: Finished difference Result 1308 states and 1853 transitions. [2022-01-11 07:38:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:04,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-11 07:38:04,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:04,885 INFO L225 Difference]: With dead ends: 1308 [2022-01-11 07:38:04,885 INFO L226 Difference]: Without dead ends: 1013 [2022-01-11 07:38:04,886 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 07:38:04,892 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 48 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:04,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1911 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:04,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-11 07:38:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1013. [2022-01-11 07:38:04,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1009 states have (on average 1.421209117938553) internal successors, (1434), 1012 states have internal predecessors, (1434), 0 states have call successors, (0), 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 07:38:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1434 transitions. [2022-01-11 07:38:04,919 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1434 transitions. Word has length 51 [2022-01-11 07:38:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:04,919 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1434 transitions. [2022-01-11 07:38:04,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 07:38:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1434 transitions. [2022-01-11 07:38:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 07:38:04,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:04,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:04,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:38:04,922 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:04,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash 299530207, now seen corresponding path program 1 times [2022-01-11 07:38:04,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:04,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63686372] [2022-01-11 07:38:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:04,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:05,001 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 07:38:05,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:05,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63686372] [2022-01-11 07:38:05,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63686372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:05,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:05,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:05,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869639578] [2022-01-11 07:38:05,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:05,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:05,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:05,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:05,006 INFO L87 Difference]: Start difference. First operand 1013 states and 1434 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:38:05,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:05,052 INFO L93 Difference]: Finished difference Result 1486 states and 2050 transitions. [2022-01-11 07:38:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:05,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-11 07:38:05,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:05,057 INFO L225 Difference]: With dead ends: 1486 [2022-01-11 07:38:05,058 INFO L226 Difference]: Without dead ends: 1121 [2022-01-11 07:38:05,058 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 07:38:05,059 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 881 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:05,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 1023 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:05,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2022-01-11 07:38:05,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1121. [2022-01-11 07:38:05,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1117 states have (on average 1.3983885407341092) internal successors, (1562), 1120 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:38:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1562 transitions. [2022-01-11 07:38:05,091 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1562 transitions. Word has length 55 [2022-01-11 07:38:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:05,094 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1562 transitions. [2022-01-11 07:38:05,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:38:05,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1562 transitions. [2022-01-11 07:38:05,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 07:38:05,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:05,102 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:05,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:38:05,103 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:05,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:05,103 INFO L85 PathProgramCache]: Analyzing trace with hash -293643039, now seen corresponding path program 1 times [2022-01-11 07:38:05,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:05,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318945446] [2022-01-11 07:38:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:05,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:05,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:05,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318945446] [2022-01-11 07:38:05,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318945446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:05,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:05,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:38:05,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466713826] [2022-01-11 07:38:05,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:05,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:38:05,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:05,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:38:05,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:38:05,218 INFO L87 Difference]: Start difference. First operand 1121 states and 1562 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 07:38:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:05,365 INFO L93 Difference]: Finished difference Result 2204 states and 2966 transitions. [2022-01-11 07:38:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:38:05,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-11 07:38:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:05,372 INFO L225 Difference]: With dead ends: 2204 [2022-01-11 07:38:05,372 INFO L226 Difference]: Without dead ends: 1781 [2022-01-11 07:38:05,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:38:05,375 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 302 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 3950 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:05,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 3950 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:38:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-01-11 07:38:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1145. [2022-01-11 07:38:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 1141 states have (on average 1.3865030674846626) internal successors, (1582), 1144 states have internal predecessors, (1582), 0 states have call successors, (0), 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 07:38:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1582 transitions. [2022-01-11 07:38:05,421 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1582 transitions. Word has length 56 [2022-01-11 07:38:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:05,422 INFO L470 AbstractCegarLoop]: Abstraction has 1145 states and 1582 transitions. [2022-01-11 07:38:05,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 07:38:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1582 transitions. [2022-01-11 07:38:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 07:38:05,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:05,423 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:05,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:38:05,424 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash 57156898, now seen corresponding path program 1 times [2022-01-11 07:38:05,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:05,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435334252] [2022-01-11 07:38:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:05,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:05,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:05,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435334252] [2022-01-11 07:38:05,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435334252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:05,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:05,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:38:05,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191719548] [2022-01-11 07:38:05,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:05,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:38:05,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:05,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:38:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:38:05,505 INFO L87 Difference]: Start difference. First operand 1145 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 07:38:05,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:05,631 INFO L93 Difference]: Finished difference Result 1934 states and 2592 transitions. [2022-01-11 07:38:05,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:38:05,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-11 07:38:05,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:05,636 INFO L225 Difference]: With dead ends: 1934 [2022-01-11 07:38:05,636 INFO L226 Difference]: Without dead ends: 1436 [2022-01-11 07:38:05,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:38:05,638 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 280 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 3892 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:05,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 3892 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2022-01-11 07:38:05,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1043. [2022-01-11 07:38:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1039 states have (on average 1.3965351299326276) internal successors, (1451), 1042 states have internal predecessors, (1451), 0 states have call successors, (0), 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 07:38:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1451 transitions. [2022-01-11 07:38:05,701 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1451 transitions. Word has length 56 [2022-01-11 07:38:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:05,703 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1451 transitions. [2022-01-11 07:38:05,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 07:38:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1451 transitions. [2022-01-11 07:38:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 07:38:05,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:05,705 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:05,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:38:05,705 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:05,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2020022654, now seen corresponding path program 1 times [2022-01-11 07:38:05,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:05,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246324642] [2022-01-11 07:38:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:05,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:05,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:05,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246324642] [2022-01-11 07:38:05,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246324642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:05,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:05,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 07:38:05,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934623337] [2022-01-11 07:38:05,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:05,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 07:38:05,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 07:38:05,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 07:38:05,802 INFO L87 Difference]: Start difference. First operand 1043 states and 1451 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 07:38:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:05,902 INFO L93 Difference]: Finished difference Result 1093 states and 1511 transitions. [2022-01-11 07:38:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 07:38:05,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-11 07:38:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:05,907 INFO L225 Difference]: With dead ends: 1093 [2022-01-11 07:38:05,907 INFO L226 Difference]: Without dead ends: 1091 [2022-01-11 07:38:05,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:38:05,908 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 1838 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:05,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1838 Valid, 1004 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-01-11 07:38:05,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1041. [2022-01-11 07:38:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1038 states have (on average 1.394990366088632) internal successors, (1448), 1040 states have internal predecessors, (1448), 0 states have call successors, (0), 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 07:38:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1448 transitions. [2022-01-11 07:38:05,972 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1448 transitions. Word has length 56 [2022-01-11 07:38:05,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:05,973 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1448 transitions. [2022-01-11 07:38:05,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 07:38:05,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1448 transitions. [2022-01-11 07:38:05,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-11 07:38:05,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:05,974 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:05,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:38:05,974 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:05,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:05,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1803808795, now seen corresponding path program 1 times [2022-01-11 07:38:05,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:05,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854365820] [2022-01-11 07:38:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:05,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:06,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:06,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:06,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854365820] [2022-01-11 07:38:06,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854365820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 07:38:06,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458593984] [2022-01-11 07:38:06,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:06,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 07:38:06,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:38:06,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 07:38:06,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 07:38:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:06,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 07:38:06,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 07:38:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:06,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 07:38:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:07,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458593984] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 07:38:07,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 07:38:07,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-11 07:38:07,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105964751] [2022-01-11 07:38:07,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 07:38:07,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 07:38:07,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 07:38:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-11 07:38:07,001 INFO L87 Difference]: Start difference. First operand 1041 states and 1448 transitions. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 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 07:38:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:07,180 INFO L93 Difference]: Finished difference Result 1927 states and 2576 transitions. [2022-01-11 07:38:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 07:38:07,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 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 57 [2022-01-11 07:38:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:07,186 INFO L225 Difference]: With dead ends: 1927 [2022-01-11 07:38:07,186 INFO L226 Difference]: Without dead ends: 1925 [2022-01-11 07:38:07,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-11 07:38:07,187 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 2974 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 4256 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:07,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2974 Valid, 4256 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:07,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2022-01-11 07:38:07,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1313. [2022-01-11 07:38:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1310 states have (on average 1.3748091603053436) internal successors, (1801), 1312 states have internal predecessors, (1801), 0 states have call successors, (0), 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 07:38:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1801 transitions. [2022-01-11 07:38:07,256 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1801 transitions. Word has length 57 [2022-01-11 07:38:07,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:07,256 INFO L470 AbstractCegarLoop]: Abstraction has 1313 states and 1801 transitions. [2022-01-11 07:38:07,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 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 07:38:07,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1801 transitions. [2022-01-11 07:38:07,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 07:38:07,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:07,258 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:07,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 07:38:07,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 07:38:07,475 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:07,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:07,476 INFO L85 PathProgramCache]: Analyzing trace with hash -491496044, now seen corresponding path program 2 times [2022-01-11 07:38:07,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:07,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146332108] [2022-01-11 07:38:07,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:07,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:07,507 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:07,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:07,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146332108] [2022-01-11 07:38:07,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146332108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:07,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:07,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:07,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618350504] [2022-01-11 07:38:07,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:07,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:07,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:07,511 INFO L87 Difference]: Start difference. First operand 1313 states and 1801 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:38:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:07,578 INFO L93 Difference]: Finished difference Result 1820 states and 2461 transitions. [2022-01-11 07:38:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:07,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-11 07:38:07,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:07,581 INFO L225 Difference]: With dead ends: 1820 [2022-01-11 07:38:07,581 INFO L226 Difference]: Without dead ends: 1224 [2022-01-11 07:38:07,583 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 07:38:07,584 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 885 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:07,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 1038 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:07,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2022-01-11 07:38:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1198. [2022-01-11 07:38:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1195 states have (on average 1.3799163179916318) internal successors, (1649), 1197 states have internal predecessors, (1649), 0 states have call successors, (0), 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 07:38:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1649 transitions. [2022-01-11 07:38:07,660 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1649 transitions. Word has length 72 [2022-01-11 07:38:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:07,660 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 1649 transitions. [2022-01-11 07:38:07,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:38:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1649 transitions. [2022-01-11 07:38:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 07:38:07,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:07,665 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:07,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:38:07,666 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:07,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash -35771476, now seen corresponding path program 1 times [2022-01-11 07:38:07,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:07,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689866258] [2022-01-11 07:38:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:07,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 07:38:07,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:07,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689866258] [2022-01-11 07:38:07,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689866258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:07,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:07,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:07,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560655133] [2022-01-11 07:38:07,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:07,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:07,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:07,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:07,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:07,711 INFO L87 Difference]: Start difference. First operand 1198 states and 1649 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 07:38:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:07,781 INFO L93 Difference]: Finished difference Result 1852 states and 2476 transitions. [2022-01-11 07:38:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:07,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 84 [2022-01-11 07:38:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:07,785 INFO L225 Difference]: With dead ends: 1852 [2022-01-11 07:38:07,785 INFO L226 Difference]: Without dead ends: 1216 [2022-01-11 07:38:07,786 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 07:38:07,786 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 870 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:07,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 1026 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:07,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-01-11 07:38:07,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1198. [2022-01-11 07:38:07,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1195 states have (on average 1.3631799163179916) internal successors, (1629), 1197 states have internal predecessors, (1629), 0 states have call successors, (0), 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 07:38:07,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1629 transitions. [2022-01-11 07:38:07,842 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1629 transitions. Word has length 84 [2022-01-11 07:38:07,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:07,842 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 1629 transitions. [2022-01-11 07:38:07,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 07:38:07,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1629 transitions. [2022-01-11 07:38:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 07:38:07,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:07,843 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:07,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:38:07,843 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1191532608, now seen corresponding path program 1 times [2022-01-11 07:38:07,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:07,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511096640] [2022-01-11 07:38:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:07,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 07:38:07,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:07,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511096640] [2022-01-11 07:38:07,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511096640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:07,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:07,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:07,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90508189] [2022-01-11 07:38:07,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:07,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:07,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:07,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:07,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:07,877 INFO L87 Difference]: Start difference. First operand 1198 states and 1629 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 07:38:07,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:07,958 INFO L93 Difference]: Finished difference Result 1462 states and 1947 transitions. [2022-01-11 07:38:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:07,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 85 [2022-01-11 07:38:07,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:07,960 INFO L225 Difference]: With dead ends: 1462 [2022-01-11 07:38:07,960 INFO L226 Difference]: Without dead ends: 556 [2022-01-11 07:38:07,961 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 07:38:07,961 INFO L933 BasicCegarLoop]: 968 mSDtfsCounter, 56 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:07,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 1868 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:07,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-01-11 07:38:07,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2022-01-11 07:38:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 554 states have (on average 1.5036101083032491) internal successors, (833), 555 states have internal predecessors, (833), 0 states have call successors, (0), 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 07:38:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 833 transitions. [2022-01-11 07:38:07,975 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 833 transitions. Word has length 85 [2022-01-11 07:38:07,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:07,976 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 833 transitions. [2022-01-11 07:38:07,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 07:38:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 833 transitions. [2022-01-11 07:38:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:07,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:07,976 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] [2022-01-11 07:38:07,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:38:07,976 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash -477481333, now seen corresponding path program 1 times [2022-01-11 07:38:07,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:07,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767701841] [2022-01-11 07:38:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:07,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:08,003 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 07:38:08,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:08,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767701841] [2022-01-11 07:38:08,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767701841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:08,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:08,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:08,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277611292] [2022-01-11 07:38:08,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:08,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:08,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:08,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:08,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:08,005 INFO L87 Difference]: Start difference. First operand 556 states and 833 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:08,041 INFO L93 Difference]: Finished difference Result 1531 states and 2288 transitions. [2022-01-11 07:38:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:08,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:08,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:08,044 INFO L225 Difference]: With dead ends: 1531 [2022-01-11 07:38:08,044 INFO L226 Difference]: Without dead ends: 988 [2022-01-11 07:38:08,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:08,045 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 753 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:08,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 1525 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-01-11 07:38:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 984. [2022-01-11 07:38:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4959266802443991) internal successors, (1469), 983 states have internal predecessors, (1469), 0 states have call successors, (0), 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 07:38:08,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1469 transitions. [2022-01-11 07:38:08,098 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1469 transitions. Word has length 88 [2022-01-11 07:38:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:08,098 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1469 transitions. [2022-01-11 07:38:08,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1469 transitions. [2022-01-11 07:38:08,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:08,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:08,099 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] [2022-01-11 07:38:08,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:38:08,099 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:08,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:08,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1592947883, now seen corresponding path program 1 times [2022-01-11 07:38:08,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:08,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636033600] [2022-01-11 07:38:08,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:08,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:08,120 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 07:38:08,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:08,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636033600] [2022-01-11 07:38:08,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636033600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:08,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:08,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:08,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887185020] [2022-01-11 07:38:08,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:08,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:08,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:08,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:08,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:08,122 INFO L87 Difference]: Start difference. First operand 984 states and 1469 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:08,158 INFO L93 Difference]: Finished difference Result 1954 states and 2917 transitions. [2022-01-11 07:38:08,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:08,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:08,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:08,161 INFO L225 Difference]: With dead ends: 1954 [2022-01-11 07:38:08,161 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 07:38:08,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:08,162 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 813 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:08,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 821 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 07:38:08,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-11 07:38:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4877800407331976) internal successors, (1461), 983 states have internal predecessors, (1461), 0 states have call successors, (0), 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 07:38:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1461 transitions. [2022-01-11 07:38:08,191 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1461 transitions. Word has length 88 [2022-01-11 07:38:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:08,191 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1461 transitions. [2022-01-11 07:38:08,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,191 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1461 transitions. [2022-01-11 07:38:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:08,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:08,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:38:08,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:38:08,192 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:08,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:08,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1803947381, now seen corresponding path program 1 times [2022-01-11 07:38:08,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:08,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88752202] [2022-01-11 07:38:08,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:08,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:08,217 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 07:38:08,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:08,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88752202] [2022-01-11 07:38:08,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88752202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:08,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:08,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:08,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310685688] [2022-01-11 07:38:08,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:08,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:08,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:08,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:08,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:08,219 INFO L87 Difference]: Start difference. First operand 984 states and 1461 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:08,258 INFO L93 Difference]: Finished difference Result 1953 states and 2900 transitions. [2022-01-11 07:38:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:08,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:08,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:08,261 INFO L225 Difference]: With dead ends: 1953 [2022-01-11 07:38:08,262 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 07:38:08,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:08,265 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 807 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:08,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 816 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:08,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 07:38:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-11 07:38:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4796334012219958) internal successors, (1453), 983 states have internal predecessors, (1453), 0 states have call successors, (0), 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 07:38:08,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1453 transitions. [2022-01-11 07:38:08,298 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1453 transitions. Word has length 88 [2022-01-11 07:38:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:08,298 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1453 transitions. [2022-01-11 07:38:08,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1453 transitions. [2022-01-11 07:38:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:08,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:08,299 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] [2022-01-11 07:38:08,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:38:08,300 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:08,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash 857421995, now seen corresponding path program 1 times [2022-01-11 07:38:08,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:08,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015941400] [2022-01-11 07:38:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:08,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:08,326 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 07:38:08,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:08,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015941400] [2022-01-11 07:38:08,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015941400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:08,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:08,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:08,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268620670] [2022-01-11 07:38:08,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:08,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:08,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:08,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:08,328 INFO L87 Difference]: Start difference. First operand 984 states and 1453 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:08,365 INFO L93 Difference]: Finished difference Result 1952 states and 2883 transitions. [2022-01-11 07:38:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:08,368 INFO L225 Difference]: With dead ends: 1952 [2022-01-11 07:38:08,368 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 07:38:08,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:08,369 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 801 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:08,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 811 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:08,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 07:38:08,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-11 07:38:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4714867617107943) internal successors, (1445), 983 states have internal predecessors, (1445), 0 states have call successors, (0), 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 07:38:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1445 transitions. [2022-01-11 07:38:08,400 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1445 transitions. Word has length 88 [2022-01-11 07:38:08,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:08,401 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1445 transitions. [2022-01-11 07:38:08,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,401 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1445 transitions. [2022-01-11 07:38:08,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:08,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:08,401 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] [2022-01-11 07:38:08,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:38:08,402 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:08,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:08,402 INFO L85 PathProgramCache]: Analyzing trace with hash -165106037, now seen corresponding path program 1 times [2022-01-11 07:38:08,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:08,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554964574] [2022-01-11 07:38:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:08,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:08,421 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 07:38:08,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:08,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554964574] [2022-01-11 07:38:08,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554964574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:08,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:08,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:08,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070293792] [2022-01-11 07:38:08,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:08,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:08,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:08,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:08,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:08,423 INFO L87 Difference]: Start difference. First operand 984 states and 1445 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:08,472 INFO L93 Difference]: Finished difference Result 1951 states and 2866 transitions. [2022-01-11 07:38:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:08,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:08,475 INFO L225 Difference]: With dead ends: 1951 [2022-01-11 07:38:08,475 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 07:38:08,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:08,476 INFO L933 BasicCegarLoop]: 806 mSDtfsCounter, 795 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:08,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 806 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 07:38:08,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-11 07:38:08,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4633401221995928) internal successors, (1437), 983 states have internal predecessors, (1437), 0 states have call successors, (0), 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 07:38:08,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1437 transitions. [2022-01-11 07:38:08,508 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1437 transitions. Word has length 88 [2022-01-11 07:38:08,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:08,508 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1437 transitions. [2022-01-11 07:38:08,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1437 transitions. [2022-01-11 07:38:08,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:08,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:08,509 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] [2022-01-11 07:38:08,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:38:08,509 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:08,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:08,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1029374805, now seen corresponding path program 1 times [2022-01-11 07:38:08,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:08,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974772070] [2022-01-11 07:38:08,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:08,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:08,531 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 07:38:08,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:08,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974772070] [2022-01-11 07:38:08,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974772070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:08,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:08,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:08,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488211453] [2022-01-11 07:38:08,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:08,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:08,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:08,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:08,533 INFO L87 Difference]: Start difference. First operand 984 states and 1437 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:08,570 INFO L93 Difference]: Finished difference Result 1950 states and 2849 transitions. [2022-01-11 07:38:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:08,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:08,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:08,573 INFO L225 Difference]: With dead ends: 1950 [2022-01-11 07:38:08,573 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 07:38:08,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:08,574 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 789 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:08,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 801 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:08,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 07:38:08,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-11 07:38:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.455193482688391) internal successors, (1429), 983 states have internal predecessors, (1429), 0 states have call successors, (0), 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 07:38:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1429 transitions. [2022-01-11 07:38:08,608 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1429 transitions. Word has length 88 [2022-01-11 07:38:08,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:08,608 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1429 transitions. [2022-01-11 07:38:08,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1429 transitions. [2022-01-11 07:38:08,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:08,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:08,609 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] [2022-01-11 07:38:08,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:38:08,609 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:08,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:08,610 INFO L85 PathProgramCache]: Analyzing trace with hash 743860875, now seen corresponding path program 1 times [2022-01-11 07:38:08,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:08,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123257817] [2022-01-11 07:38:08,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:08,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:08,633 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 07:38:08,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:08,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123257817] [2022-01-11 07:38:08,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123257817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:08,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:08,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:08,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304802087] [2022-01-11 07:38:08,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:08,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:08,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:08,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:08,635 INFO L87 Difference]: Start difference. First operand 984 states and 1429 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:08,692 INFO L93 Difference]: Finished difference Result 1949 states and 2832 transitions. [2022-01-11 07:38:08,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:08,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:08,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:08,695 INFO L225 Difference]: With dead ends: 1949 [2022-01-11 07:38:08,695 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 07:38:08,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:08,697 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 713 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:08,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 838 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 07:38:08,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-11 07:38:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.4327902240325865) internal successors, (1407), 983 states have internal predecessors, (1407), 0 states have call successors, (0), 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 07:38:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1407 transitions. [2022-01-11 07:38:08,731 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1407 transitions. Word has length 88 [2022-01-11 07:38:08,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:08,731 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1407 transitions. [2022-01-11 07:38:08,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1407 transitions. [2022-01-11 07:38:08,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:08,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:08,732 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] [2022-01-11 07:38:08,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 07:38:08,732 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:08,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:08,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1914952662, now seen corresponding path program 1 times [2022-01-11 07:38:08,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:08,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823001740] [2022-01-11 07:38:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:08,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:08,752 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 07:38:08,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:08,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823001740] [2022-01-11 07:38:08,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823001740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:08,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:08,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:08,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762661581] [2022-01-11 07:38:08,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:08,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:08,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:08,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:08,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:08,753 INFO L87 Difference]: Start difference. First operand 984 states and 1407 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:08,818 INFO L93 Difference]: Finished difference Result 1948 states and 2787 transitions. [2022-01-11 07:38:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:08,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:08,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:08,821 INFO L225 Difference]: With dead ends: 1948 [2022-01-11 07:38:08,821 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 07:38:08,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:08,823 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 700 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:08,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 824 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:08,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 07:38:08,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-11 07:38:08,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.410386965376782) internal successors, (1385), 983 states have internal predecessors, (1385), 0 states have call successors, (0), 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 07:38:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1385 transitions. [2022-01-11 07:38:08,871 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1385 transitions. Word has length 88 [2022-01-11 07:38:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:08,871 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1385 transitions. [2022-01-11 07:38:08,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1385 transitions. [2022-01-11 07:38:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:08,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:08,872 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] [2022-01-11 07:38:08,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 07:38:08,872 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:08,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:08,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1898956599, now seen corresponding path program 1 times [2022-01-11 07:38:08,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:08,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167792436] [2022-01-11 07:38:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:08,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:08,895 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 07:38:08,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:08,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167792436] [2022-01-11 07:38:08,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167792436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:08,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:08,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:08,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216116380] [2022-01-11 07:38:08,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:08,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:08,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:08,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:08,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:08,897 INFO L87 Difference]: Start difference. First operand 984 states and 1385 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:08,960 INFO L93 Difference]: Finished difference Result 1947 states and 2742 transitions. [2022-01-11 07:38:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:08,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:08,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:08,963 INFO L225 Difference]: With dead ends: 1947 [2022-01-11 07:38:08,963 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 07:38:08,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:08,965 INFO L933 BasicCegarLoop]: 754 mSDtfsCounter, 687 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:08,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 810 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:08,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 07:38:09,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-11 07:38:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.3879837067209777) internal successors, (1363), 983 states have internal predecessors, (1363), 0 states have call successors, (0), 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 07:38:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1363 transitions. [2022-01-11 07:38:09,003 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1363 transitions. Word has length 88 [2022-01-11 07:38:09,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:09,003 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1363 transitions. [2022-01-11 07:38:09,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1363 transitions. [2022-01-11 07:38:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:09,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:09,003 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] [2022-01-11 07:38:09,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 07:38:09,004 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:09,004 INFO L85 PathProgramCache]: Analyzing trace with hash 533135592, now seen corresponding path program 1 times [2022-01-11 07:38:09,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:09,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949470296] [2022-01-11 07:38:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:09,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:09,023 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 07:38:09,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:09,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949470296] [2022-01-11 07:38:09,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949470296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:09,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:09,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:09,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879800504] [2022-01-11 07:38:09,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:09,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:09,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:09,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:09,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:09,025 INFO L87 Difference]: Start difference. First operand 984 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:09,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:09,084 INFO L93 Difference]: Finished difference Result 1946 states and 2697 transitions. [2022-01-11 07:38:09,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:09,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:09,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:09,087 INFO L225 Difference]: With dead ends: 1946 [2022-01-11 07:38:09,087 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 07:38:09,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:09,090 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 674 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:09,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 796 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 07:38:09,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-11 07:38:09,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.3655804480651732) internal successors, (1341), 983 states have internal predecessors, (1341), 0 states have call successors, (0), 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 07:38:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1341 transitions. [2022-01-11 07:38:09,138 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1341 transitions. Word has length 88 [2022-01-11 07:38:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:09,138 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1341 transitions. [2022-01-11 07:38:09,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1341 transitions. [2022-01-11 07:38:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:09,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:09,140 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] [2022-01-11 07:38:09,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 07:38:09,140 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:09,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash -527174649, now seen corresponding path program 1 times [2022-01-11 07:38:09,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:09,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679357783] [2022-01-11 07:38:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:09,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:09,163 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 07:38:09,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:09,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679357783] [2022-01-11 07:38:09,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679357783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:09,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:09,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:09,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697768824] [2022-01-11 07:38:09,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:09,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:09,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:09,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:09,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:09,164 INFO L87 Difference]: Start difference. First operand 984 states and 1341 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:09,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:09,224 INFO L93 Difference]: Finished difference Result 1944 states and 2650 transitions. [2022-01-11 07:38:09,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:09,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:09,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:09,227 INFO L225 Difference]: With dead ends: 1944 [2022-01-11 07:38:09,227 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 07:38:09,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:09,230 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 660 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:09,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 782 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:09,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 07:38:09,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 984. [2022-01-11 07:38:09,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.3431771894093687) internal successors, (1319), 983 states have internal predecessors, (1319), 0 states have call successors, (0), 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 07:38:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1319 transitions. [2022-01-11 07:38:09,283 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1319 transitions. Word has length 88 [2022-01-11 07:38:09,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:09,283 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1319 transitions. [2022-01-11 07:38:09,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:09,283 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1319 transitions. [2022-01-11 07:38:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:09,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:09,284 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] [2022-01-11 07:38:09,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 07:38:09,284 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:09,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1642232410, now seen corresponding path program 1 times [2022-01-11 07:38:09,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:09,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429014045] [2022-01-11 07:38:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:09,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:09,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:09,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429014045] [2022-01-11 07:38:09,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429014045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:09,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:09,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:38:09,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205876161] [2022-01-11 07:38:09,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:09,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:38:09,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:09,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:38:09,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:38:09,322 INFO L87 Difference]: Start difference. First operand 984 states and 1319 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:09,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:09,445 INFO L93 Difference]: Finished difference Result 2411 states and 3268 transitions. [2022-01-11 07:38:09,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:38:09,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:09,460 INFO L225 Difference]: With dead ends: 2411 [2022-01-11 07:38:09,461 INFO L226 Difference]: Without dead ends: 1458 [2022-01-11 07:38:09,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:38:09,462 INFO L933 BasicCegarLoop]: 805 mSDtfsCounter, 2049 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:09,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2049 Valid, 1805 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:09,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2022-01-11 07:38:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 990. [2022-01-11 07:38:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 988 states have (on average 1.3269230769230769) internal successors, (1311), 989 states have internal predecessors, (1311), 0 states have call successors, (0), 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 07:38:09,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1311 transitions. [2022-01-11 07:38:09,509 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1311 transitions. Word has length 88 [2022-01-11 07:38:09,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:09,510 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 1311 transitions. [2022-01-11 07:38:09,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1311 transitions. [2022-01-11 07:38:09,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:09,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:09,510 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] [2022-01-11 07:38:09,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 07:38:09,510 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:09,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:09,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1361882521, now seen corresponding path program 1 times [2022-01-11 07:38:09,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:09,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553919058] [2022-01-11 07:38:09,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:09,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:09,549 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 07:38:09,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:09,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553919058] [2022-01-11 07:38:09,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553919058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:09,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:09,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:38:09,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467319485] [2022-01-11 07:38:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:09,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:38:09,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:09,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:38:09,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:38:09,552 INFO L87 Difference]: Start difference. First operand 990 states and 1311 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:09,692 INFO L93 Difference]: Finished difference Result 2555 states and 3413 transitions. [2022-01-11 07:38:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:38:09,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:09,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:09,695 INFO L225 Difference]: With dead ends: 2555 [2022-01-11 07:38:09,695 INFO L226 Difference]: Without dead ends: 1610 [2022-01-11 07:38:09,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:38:09,697 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 1835 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:09,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1835 Valid, 2119 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2022-01-11 07:38:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 996. [2022-01-11 07:38:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 994 states have (on average 1.3108651911468814) internal successors, (1303), 995 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:38:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1303 transitions. [2022-01-11 07:38:09,769 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1303 transitions. Word has length 88 [2022-01-11 07:38:09,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:09,769 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 1303 transitions. [2022-01-11 07:38:09,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1303 transitions. [2022-01-11 07:38:09,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:09,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:09,770 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] [2022-01-11 07:38:09,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 07:38:09,770 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:09,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:09,771 INFO L85 PathProgramCache]: Analyzing trace with hash 609056936, now seen corresponding path program 1 times [2022-01-11 07:38:09,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:09,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478438549] [2022-01-11 07:38:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:09,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:09,803 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 07:38:09,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:09,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478438549] [2022-01-11 07:38:09,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478438549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:09,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:09,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:38:09,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512155658] [2022-01-11 07:38:09,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:09,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:38:09,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:38:09,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:38:09,805 INFO L87 Difference]: Start difference. First operand 996 states and 1303 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:09,956 INFO L93 Difference]: Finished difference Result 2636 states and 3475 transitions. [2022-01-11 07:38:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:38:09,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:09,959 INFO L225 Difference]: With dead ends: 2636 [2022-01-11 07:38:09,959 INFO L226 Difference]: Without dead ends: 1692 [2022-01-11 07:38:09,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:38:09,960 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1743 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:09,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 2208 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-01-11 07:38:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1002. [2022-01-11 07:38:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 1000 states have (on average 1.295) internal successors, (1295), 1001 states have internal predecessors, (1295), 0 states have call successors, (0), 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 07:38:10,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1295 transitions. [2022-01-11 07:38:10,022 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1295 transitions. Word has length 88 [2022-01-11 07:38:10,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:10,022 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 1295 transitions. [2022-01-11 07:38:10,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:10,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1295 transitions. [2022-01-11 07:38:10,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:10,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:10,023 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] [2022-01-11 07:38:10,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 07:38:10,023 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:10,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:10,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1326603351, now seen corresponding path program 1 times [2022-01-11 07:38:10,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:10,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932372501] [2022-01-11 07:38:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:10,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:10,045 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 07:38:10,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:10,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932372501] [2022-01-11 07:38:10,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932372501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:10,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:10,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:10,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064390997] [2022-01-11 07:38:10,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:10,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:10,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:10,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:10,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:10,046 INFO L87 Difference]: Start difference. First operand 1002 states and 1295 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:10,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:10,183 INFO L93 Difference]: Finished difference Result 2766 states and 3576 transitions. [2022-01-11 07:38:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:10,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:10,186 INFO L225 Difference]: With dead ends: 2766 [2022-01-11 07:38:10,186 INFO L226 Difference]: Without dead ends: 1818 [2022-01-11 07:38:10,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:10,188 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 584 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:10,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1303 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-01-11 07:38:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1810. [2022-01-11 07:38:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1808 states have (on average 1.2865044247787611) internal successors, (2326), 1809 states have internal predecessors, (2326), 0 states have call successors, (0), 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 07:38:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2326 transitions. [2022-01-11 07:38:10,294 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2326 transitions. Word has length 88 [2022-01-11 07:38:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:10,294 INFO L470 AbstractCegarLoop]: Abstraction has 1810 states and 2326 transitions. [2022-01-11 07:38:10,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2326 transitions. [2022-01-11 07:38:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:10,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:10,295 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] [2022-01-11 07:38:10,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 07:38:10,295 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:10,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:10,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1016321064, now seen corresponding path program 1 times [2022-01-11 07:38:10,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:10,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654337120] [2022-01-11 07:38:10,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:10,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:10,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:10,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654337120] [2022-01-11 07:38:10,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654337120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:10,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:10,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:10,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797211471] [2022-01-11 07:38:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:10,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:10,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:10,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:10,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:10,320 INFO L87 Difference]: Start difference. First operand 1810 states and 2326 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:10,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:10,444 INFO L93 Difference]: Finished difference Result 3597 states and 4622 transitions. [2022-01-11 07:38:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:10,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:10,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:10,447 INFO L225 Difference]: With dead ends: 3597 [2022-01-11 07:38:10,447 INFO L226 Difference]: Without dead ends: 1810 [2022-01-11 07:38:10,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:10,449 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 577 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:10,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 740 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-01-11 07:38:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1810. [2022-01-11 07:38:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1808 states have (on average 1.271570796460177) internal successors, (2299), 1809 states have internal predecessors, (2299), 0 states have call successors, (0), 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 07:38:10,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2299 transitions. [2022-01-11 07:38:10,613 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2299 transitions. Word has length 88 [2022-01-11 07:38:10,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:10,613 INFO L470 AbstractCegarLoop]: Abstraction has 1810 states and 2299 transitions. [2022-01-11 07:38:10,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2299 transitions. [2022-01-11 07:38:10,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:38:10,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:10,613 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] [2022-01-11 07:38:10,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 07:38:10,614 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:10,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:10,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1925336535, now seen corresponding path program 1 times [2022-01-11 07:38:10,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:10,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482677380] [2022-01-11 07:38:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:10,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:10,645 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 07:38:10,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:10,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482677380] [2022-01-11 07:38:10,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482677380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:10,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:10,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:38:10,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907243690] [2022-01-11 07:38:10,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:10,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:10,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:10,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:10,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:10,646 INFO L87 Difference]: Start difference. First operand 1810 states and 2299 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:10,882 INFO L93 Difference]: Finished difference Result 5248 states and 6660 transitions. [2022-01-11 07:38:10,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:10,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-11 07:38:10,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:10,890 INFO L225 Difference]: With dead ends: 5248 [2022-01-11 07:38:10,890 INFO L226 Difference]: Without dead ends: 3464 [2022-01-11 07:38:10,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:38:10,895 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 579 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1278 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 07:38:10,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 1278 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-01-11 07:38:11,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 3302. [2022-01-11 07:38:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3302 states, 3300 states have (on average 1.2621212121212122) internal successors, (4165), 3301 states have internal predecessors, (4165), 0 states have call successors, (0), 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 07:38:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 4165 transitions. [2022-01-11 07:38:11,144 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 4165 transitions. Word has length 88 [2022-01-11 07:38:11,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:11,144 INFO L470 AbstractCegarLoop]: Abstraction has 3302 states and 4165 transitions. [2022-01-11 07:38:11,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:38:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 4165 transitions. [2022-01-11 07:38:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 07:38:11,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:11,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:11,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 07:38:11,146 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:11,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1846338142, now seen corresponding path program 1 times [2022-01-11 07:38:11,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:11,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998901333] [2022-01-11 07:38:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:11,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:11,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:11,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998901333] [2022-01-11 07:38:11,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998901333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:11,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:11,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:11,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143223571] [2022-01-11 07:38:11,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:11,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:11,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:11,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:11,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:11,182 INFO L87 Difference]: Start difference. First operand 3302 states and 4165 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 07:38:11,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:11,572 INFO L93 Difference]: Finished difference Result 9667 states and 12220 transitions. [2022-01-11 07:38:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 07:38:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:11,582 INFO L225 Difference]: With dead ends: 9667 [2022-01-11 07:38:11,582 INFO L226 Difference]: Without dead ends: 6397 [2022-01-11 07:38:11,585 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 07:38:11,585 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 605 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:11,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 1275 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:11,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2022-01-11 07:38:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 6085. [2022-01-11 07:38:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6085 states, 6083 states have (on average 1.2597402597402598) internal successors, (7663), 6084 states have internal predecessors, (7663), 0 states have call successors, (0), 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 07:38:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 7663 transitions. [2022-01-11 07:38:11,968 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 7663 transitions. Word has length 142 [2022-01-11 07:38:11,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:11,968 INFO L470 AbstractCegarLoop]: Abstraction has 6085 states and 7663 transitions. [2022-01-11 07:38:11,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 07:38:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 7663 transitions. [2022-01-11 07:38:11,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 07:38:11,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:11,971 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:11,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 07:38:11,971 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:11,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:11,971 INFO L85 PathProgramCache]: Analyzing trace with hash 85064545, now seen corresponding path program 1 times [2022-01-11 07:38:11,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:11,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462616642] [2022-01-11 07:38:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:11,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:12,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:12,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462616642] [2022-01-11 07:38:12,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462616642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:12,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:12,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:12,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946321302] [2022-01-11 07:38:12,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:12,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:12,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:12,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:12,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:12,036 INFO L87 Difference]: Start difference. First operand 6085 states and 7663 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 07:38:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:12,807 INFO L93 Difference]: Finished difference Result 17815 states and 22283 transitions. [2022-01-11 07:38:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:12,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 07:38:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:12,823 INFO L225 Difference]: With dead ends: 17815 [2022-01-11 07:38:12,823 INFO L226 Difference]: Without dead ends: 11807 [2022-01-11 07:38:12,829 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 07:38:12,829 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 608 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:12,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1511 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:12,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11807 states. [2022-01-11 07:38:13,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11807 to 11527. [2022-01-11 07:38:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11527 states, 11525 states have (on average 1.2413882863340564) internal successors, (14307), 11526 states have internal predecessors, (14307), 0 states have call successors, (0), 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 07:38:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11527 states to 11527 states and 14307 transitions. [2022-01-11 07:38:13,620 INFO L78 Accepts]: Start accepts. Automaton has 11527 states and 14307 transitions. Word has length 142 [2022-01-11 07:38:13,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:13,621 INFO L470 AbstractCegarLoop]: Abstraction has 11527 states and 14307 transitions. [2022-01-11 07:38:13,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 07:38:13,621 INFO L276 IsEmpty]: Start isEmpty. Operand 11527 states and 14307 transitions. [2022-01-11 07:38:13,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 07:38:13,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:13,626 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:13,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 07:38:13,627 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:13,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:13,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1817305474, now seen corresponding path program 1 times [2022-01-11 07:38:13,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:13,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556602759] [2022-01-11 07:38:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:13,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:38:13,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:13,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556602759] [2022-01-11 07:38:13,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556602759] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:13,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:13,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:13,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989942276] [2022-01-11 07:38:13,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:13,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:13,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:13,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:13,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:13,655 INFO L87 Difference]: Start difference. First operand 11527 states and 14307 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 07:38:14,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:14,701 INFO L93 Difference]: Finished difference Result 22948 states and 28491 transitions. [2022-01-11 07:38:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:14,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 142 [2022-01-11 07:38:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:14,724 INFO L225 Difference]: With dead ends: 22948 [2022-01-11 07:38:14,724 INFO L226 Difference]: Without dead ends: 11457 [2022-01-11 07:38:14,741 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 07:38:14,741 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 691 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:14,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 697 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:14,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11457 states. [2022-01-11 07:38:15,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11457 to 11457. [2022-01-11 07:38:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11457 states, 11455 states have (on average 1.2419030990833697) internal successors, (14226), 11456 states have internal predecessors, (14226), 0 states have call successors, (0), 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 07:38:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11457 states to 11457 states and 14226 transitions. [2022-01-11 07:38:15,962 INFO L78 Accepts]: Start accepts. Automaton has 11457 states and 14226 transitions. Word has length 142 [2022-01-11 07:38:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:15,963 INFO L470 AbstractCegarLoop]: Abstraction has 11457 states and 14226 transitions. [2022-01-11 07:38:15,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 07:38:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 11457 states and 14226 transitions. [2022-01-11 07:38:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 07:38:15,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:15,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:15,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 07:38:15,968 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:15,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:15,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1515644078, now seen corresponding path program 1 times [2022-01-11 07:38:15,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:15,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251854146] [2022-01-11 07:38:15,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:15,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:16,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:16,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251854146] [2022-01-11 07:38:16,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251854146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:16,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:16,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:16,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117849239] [2022-01-11 07:38:16,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:16,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:16,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:16,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:16,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:16,021 INFO L87 Difference]: Start difference. First operand 11457 states and 14226 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 07:38:17,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:17,482 INFO L93 Difference]: Finished difference Result 32494 states and 40244 transitions. [2022-01-11 07:38:17,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:17,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-11 07:38:17,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:17,525 INFO L225 Difference]: With dead ends: 32494 [2022-01-11 07:38:17,535 INFO L226 Difference]: Without dead ends: 21114 [2022-01-11 07:38:17,547 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 07:38:17,547 INFO L933 BasicCegarLoop]: 960 mSDtfsCounter, 486 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:17,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1635 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21114 states. [2022-01-11 07:38:18,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21114 to 21110. [2022-01-11 07:38:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21110 states, 21108 states have (on average 1.2328974796285768) internal successors, (26024), 21109 states have internal predecessors, (26024), 0 states have call successors, (0), 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 07:38:19,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21110 states to 21110 states and 26024 transitions. [2022-01-11 07:38:19,022 INFO L78 Accepts]: Start accepts. Automaton has 21110 states and 26024 transitions. Word has length 143 [2022-01-11 07:38:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:19,022 INFO L470 AbstractCegarLoop]: Abstraction has 21110 states and 26024 transitions. [2022-01-11 07:38:19,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 07:38:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 21110 states and 26024 transitions. [2022-01-11 07:38:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 07:38:19,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:19,030 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:19,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 07:38:19,030 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:19,031 INFO L85 PathProgramCache]: Analyzing trace with hash 840783921, now seen corresponding path program 1 times [2022-01-11 07:38:19,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:19,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70081142] [2022-01-11 07:38:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:19,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:38:19,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:19,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70081142] [2022-01-11 07:38:19,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70081142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:19,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:19,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:19,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446788246] [2022-01-11 07:38:19,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:19,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:19,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:19,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:19,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:19,054 INFO L87 Difference]: Start difference. First operand 21110 states and 26024 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 07:38:20,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:20,417 INFO L93 Difference]: Finished difference Result 42074 states and 51882 transitions. [2022-01-11 07:38:20,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:20,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 143 [2022-01-11 07:38:20,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:20,442 INFO L225 Difference]: With dead ends: 42074 [2022-01-11 07:38:20,442 INFO L226 Difference]: Without dead ends: 21041 [2022-01-11 07:38:20,461 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 07:38:20,462 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 689 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:20,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 696 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:20,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21041 states. [2022-01-11 07:38:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21041 to 21041. [2022-01-11 07:38:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21041 states, 21039 states have (on average 1.233185987927183) internal successors, (25945), 21040 states have internal predecessors, (25945), 0 states have call successors, (0), 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 07:38:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21041 states to 21041 states and 25945 transitions. [2022-01-11 07:38:21,834 INFO L78 Accepts]: Start accepts. Automaton has 21041 states and 25945 transitions. Word has length 143 [2022-01-11 07:38:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:21,835 INFO L470 AbstractCegarLoop]: Abstraction has 21041 states and 25945 transitions. [2022-01-11 07:38:21,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 07:38:21,835 INFO L276 IsEmpty]: Start isEmpty. Operand 21041 states and 25945 transitions. [2022-01-11 07:38:21,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 07:38:21,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:21,841 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:21,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 07:38:21,841 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash -562675146, now seen corresponding path program 1 times [2022-01-11 07:38:21,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:21,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952063061] [2022-01-11 07:38:21,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:21,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:21,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:21,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952063061] [2022-01-11 07:38:21,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952063061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:21,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:21,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:21,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620846381] [2022-01-11 07:38:21,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:21,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:21,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:21,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:21,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:21,875 INFO L87 Difference]: Start difference. First operand 21041 states and 25945 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 07:38:24,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:24,365 INFO L93 Difference]: Finished difference Result 59837 states and 73737 transitions. [2022-01-11 07:38:24,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:24,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-01-11 07:38:24,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:24,415 INFO L225 Difference]: With dead ends: 59837 [2022-01-11 07:38:24,415 INFO L226 Difference]: Without dead ends: 38873 [2022-01-11 07:38:24,435 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 07:38:24,436 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 491 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:24,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1604 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38873 states. [2022-01-11 07:38:26,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38873 to 38869. [2022-01-11 07:38:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38869 states, 38867 states have (on average 1.2289345717446678) internal successors, (47765), 38868 states have internal predecessors, (47765), 0 states have call successors, (0), 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 07:38:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38869 states to 38869 states and 47765 transitions. [2022-01-11 07:38:26,936 INFO L78 Accepts]: Start accepts. Automaton has 38869 states and 47765 transitions. Word has length 144 [2022-01-11 07:38:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:26,936 INFO L470 AbstractCegarLoop]: Abstraction has 38869 states and 47765 transitions. [2022-01-11 07:38:26,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 07:38:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 38869 states and 47765 transitions. [2022-01-11 07:38:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 07:38:26,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:26,948 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:26,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 07:38:26,948 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:26,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:26,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1793752853, now seen corresponding path program 1 times [2022-01-11 07:38:26,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:26,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099709310] [2022-01-11 07:38:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:26,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:38:26,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:26,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099709310] [2022-01-11 07:38:26,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099709310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:26,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:26,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:26,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178741954] [2022-01-11 07:38:26,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:26,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:26,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:26,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:26,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:26,971 INFO L87 Difference]: Start difference. First operand 38869 states and 47765 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 07:38:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:30,037 INFO L93 Difference]: Finished difference Result 77593 states and 95367 transitions. [2022-01-11 07:38:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:30,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 144 [2022-01-11 07:38:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:30,094 INFO L225 Difference]: With dead ends: 77593 [2022-01-11 07:38:30,094 INFO L226 Difference]: Without dead ends: 38801 [2022-01-11 07:38:30,117 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 07:38:30,118 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 687 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:30,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 695 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38801 states. [2022-01-11 07:38:32,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38801 to 38801. [2022-01-11 07:38:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38801 states, 38799 states have (on average 1.2291038428825485) internal successors, (47688), 38800 states have internal predecessors, (47688), 0 states have call successors, (0), 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 07:38:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38801 states to 38801 states and 47688 transitions. [2022-01-11 07:38:33,085 INFO L78 Accepts]: Start accepts. Automaton has 38801 states and 47688 transitions. Word has length 144 [2022-01-11 07:38:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:33,086 INFO L470 AbstractCegarLoop]: Abstraction has 38801 states and 47688 transitions. [2022-01-11 07:38:33,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 07:38:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 38801 states and 47688 transitions. [2022-01-11 07:38:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-11 07:38:33,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:33,097 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:33,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-11 07:38:33,097 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:33,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash 895806849, now seen corresponding path program 1 times [2022-01-11 07:38:33,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:33,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011487459] [2022-01-11 07:38:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:33,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:33,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:33,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011487459] [2022-01-11 07:38:33,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011487459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:33,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:33,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:33,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170977065] [2022-01-11 07:38:33,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:33,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:33,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:33,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:33,132 INFO L87 Difference]: Start difference. First operand 38801 states and 47688 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 07:38:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:38,303 INFO L93 Difference]: Finished difference Result 113708 states and 139670 transitions. [2022-01-11 07:38:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:38,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-01-11 07:38:38,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:38,411 INFO L225 Difference]: With dead ends: 113708 [2022-01-11 07:38:38,411 INFO L226 Difference]: Without dead ends: 74984 [2022-01-11 07:38:38,440 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 07:38:38,441 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 609 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:38,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1500 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:38,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74984 states. [2022-01-11 07:38:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74984 to 74276. [2022-01-11 07:38:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74276 states, 74274 states have (on average 1.2251124215741713) internal successors, (90994), 74275 states have internal predecessors, (90994), 0 states have call successors, (0), 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 07:38:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74276 states to 74276 states and 90994 transitions. [2022-01-11 07:38:44,061 INFO L78 Accepts]: Start accepts. Automaton has 74276 states and 90994 transitions. Word has length 145 [2022-01-11 07:38:44,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:44,061 INFO L470 AbstractCegarLoop]: Abstraction has 74276 states and 90994 transitions. [2022-01-11 07:38:44,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 07:38:44,062 INFO L276 IsEmpty]: Start isEmpty. Operand 74276 states and 90994 transitions. [2022-01-11 07:38:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-11 07:38:44,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:44,084 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:44,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-11 07:38:44,084 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:44,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1045666466, now seen corresponding path program 1 times [2022-01-11 07:38:44,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:44,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313237175] [2022-01-11 07:38:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:44,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:38:44,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:44,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313237175] [2022-01-11 07:38:44,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313237175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:44,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:44,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:44,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799142260] [2022-01-11 07:38:44,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:44,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:44,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:44,166 INFO L87 Difference]: Start difference. First operand 74276 states and 90994 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 07:38:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:38:48,503 INFO L93 Difference]: Finished difference Result 130837 states and 160387 transitions. [2022-01-11 07:38:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:38:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 145 [2022-01-11 07:38:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:38:48,596 INFO L225 Difference]: With dead ends: 130837 [2022-01-11 07:38:48,596 INFO L226 Difference]: Without dead ends: 56617 [2022-01-11 07:38:48,652 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 07:38:48,653 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 685 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:38:48,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 694 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:38:48,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56617 states. [2022-01-11 07:38:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56617 to 56617. [2022-01-11 07:38:52,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56617 states, 56615 states have (on average 1.2267950189879007) internal successors, (69455), 56616 states have internal predecessors, (69455), 0 states have call successors, (0), 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 07:38:52,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56617 states to 56617 states and 69455 transitions. [2022-01-11 07:38:52,984 INFO L78 Accepts]: Start accepts. Automaton has 56617 states and 69455 transitions. Word has length 145 [2022-01-11 07:38:52,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:38:52,984 INFO L470 AbstractCegarLoop]: Abstraction has 56617 states and 69455 transitions. [2022-01-11 07:38:52,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 07:38:52,984 INFO L276 IsEmpty]: Start isEmpty. Operand 56617 states and 69455 transitions. [2022-01-11 07:38:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-11 07:38:52,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:38:52,997 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:38:52,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-11 07:38:52,998 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:38:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:38:52,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1660111838, now seen corresponding path program 1 times [2022-01-11 07:38:52,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:38:52,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389831905] [2022-01-11 07:38:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:38:52,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:38:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:38:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:38:53,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:38:53,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389831905] [2022-01-11 07:38:53,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389831905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:38:53,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:38:53,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:38:53,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517122555] [2022-01-11 07:38:53,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:38:53,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:38:53,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:38:53,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:38:53,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:38:53,049 INFO L87 Difference]: Start difference. First operand 56617 states and 69455 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 07:39:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:39:00,548 INFO L93 Difference]: Finished difference Result 160899 states and 197163 transitions. [2022-01-11 07:39:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:39:00,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-01-11 07:39:00,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:39:00,754 INFO L225 Difference]: With dead ends: 160899 [2022-01-11 07:39:00,754 INFO L226 Difference]: Without dead ends: 104359 [2022-01-11 07:39:00,945 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 07:39:00,946 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 607 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:39:00,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 1509 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:39:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104359 states. [2022-01-11 07:39:08,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104359 to 103587. [2022-01-11 07:39:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103587 states, 103585 states have (on average 1.2241830380846648) internal successors, (126807), 103586 states have internal predecessors, (126807), 0 states have call successors, (0), 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 07:39:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103587 states to 103587 states and 126807 transitions. [2022-01-11 07:39:09,526 INFO L78 Accepts]: Start accepts. Automaton has 103587 states and 126807 transitions. Word has length 146 [2022-01-11 07:39:09,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:39:09,526 INFO L470 AbstractCegarLoop]: Abstraction has 103587 states and 126807 transitions. [2022-01-11 07:39:09,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 07:39:09,526 INFO L276 IsEmpty]: Start isEmpty. Operand 103587 states and 126807 transitions. [2022-01-11 07:39:09,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-11 07:39:09,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:39:09,549 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:09,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-11 07:39:09,551 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 07:39:09,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:39:09,555 INFO L85 PathProgramCache]: Analyzing trace with hash 473452355, now seen corresponding path program 1 times [2022-01-11 07:39:09,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:39:09,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191417318] [2022-01-11 07:39:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:39:09,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:39:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:39:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:39:09,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:39:09,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191417318] [2022-01-11 07:39:09,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191417318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:39:09,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:39:09,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:39:09,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617002482] [2022-01-11 07:39:09,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:39:09,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:39:09,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:39:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:39:09,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:39:09,625 INFO L87 Difference]: Start difference. First operand 103587 states and 126807 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)