/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:48:43,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:48:43,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:48:43,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:48:43,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:48:43,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:48:43,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:48:43,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:48:43,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:48:43,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:48:43,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:48:43,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:48:43,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:48:43,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:48:43,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:48:43,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:48:43,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:48:43,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:48:43,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:48:43,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:48:43,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:48:43,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:48:43,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:48:43,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:48:43,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:48:43,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:48:43,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:48:43,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:48:43,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:48:43,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:48:43,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:48:43,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:48:43,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:48:43,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:48:43,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:48:43,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:48:43,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:48:43,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:48:43,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:48:43,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:48:43,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:48:43,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:48:43,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:48:43,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:48:43,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:48:43,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:48:43,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:48:43,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:48:43,228 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:48:43,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:48:43,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:48:43,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:48:43,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:48:43,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:48:43,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:48:43,229 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:48:43,229 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:48:43,230 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:48:43,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:48:43,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:48:43,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:48:43,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:48:43,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:48:43,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:48:43,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:48:43,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:48:43,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:48:43,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:48:43,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:48:43,232 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:48:43,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:48:43,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:48:43,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:48:43,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:48:43,233 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:48:43,233 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:48:43,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:48:43,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:48:43,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:48:43,456 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:48:43,458 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:48:43,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2022-01-11 01:48:43,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/985d8d12c/8ea5e521069c49218418882d6c822daf/FLAGf723bc237 [2022-01-11 01:48:43,824 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:48:43,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2022-01-11 01:48:43,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/985d8d12c/8ea5e521069c49218418882d6c822daf/FLAGf723bc237 [2022-01-11 01:48:44,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/985d8d12c/8ea5e521069c49218418882d6c822daf [2022-01-11 01:48:44,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:48:44,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:48:44,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:48:44,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:48:44,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:48:44,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f9be97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44, skipping insertion in model container [2022-01-11 01:48:44,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:48:44,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:48:44,436 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_2.cil-1+token_ring.04.cil-2.c[914,927] [2022-01-11 01:48:44,469 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_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2022-01-11 01:48:44,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:48:44,514 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:48:44,522 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_2.cil-1+token_ring.04.cil-2.c[914,927] [2022-01-11 01:48:44,533 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_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2022-01-11 01:48:44,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:48:44,591 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:48:44,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44 WrapperNode [2022-01-11 01:48:44,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:48:44,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:48:44,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:48:44,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:48:44,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,672 INFO L137 Inliner]: procedures = 62, calls = 70, calls flagged for inlining = 65, calls inlined = 105, statements flattened = 1375 [2022-01-11 01:48:44,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:48:44,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:48:44,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:48:44,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:48:44,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:48:44,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:48:44,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:48:44,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:48:44,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44" (1/1) ... [2022-01-11 01:48:44,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:48:44,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:48:44,780 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 01:48:44,799 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 01:48:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:48:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:48:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:48:44,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:48:44,924 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:48:44,925 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:48:45,745 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:48:45,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:48:45,754 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-11 01:48:45,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:48:45 BoogieIcfgContainer [2022-01-11 01:48:45,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:48:45,757 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:48:45,757 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:48:45,760 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:48:45,762 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:48:45" (1/1) ... [2022-01-11 01:48:45,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:48:45 BasicIcfg [2022-01-11 01:48:45,920 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:48:45,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:48:45,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:48:45,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:48:45,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:48:44" (1/4) ... [2022-01-11 01:48:45,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3beb2ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:48:45, skipping insertion in model container [2022-01-11 01:48:45,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:48:44" (2/4) ... [2022-01-11 01:48:45,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3beb2ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:48:45, skipping insertion in model container [2022-01-11 01:48:45,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:48:45" (3/4) ... [2022-01-11 01:48:45,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3beb2ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:48:45, skipping insertion in model container [2022-01-11 01:48:45,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:48:45" (4/4) ... [2022-01-11 01:48:45,925 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-2.cTransformedIcfg [2022-01-11 01:48:45,928 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:48:45,929 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-11 01:48:45,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:48:45,962 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 01:48:45,962 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-11 01:48:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 543 states, 538 states have (on average 1.546468401486989) internal successors, (832), 542 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 01:48:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 01:48:46,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:46,015 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] [2022-01-11 01:48:46,016 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 01:48:46,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:46,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1206637235, now seen corresponding path program 1 times [2022-01-11 01:48:46,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:46,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477699797] [2022-01-11 01:48:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:46,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:46,232 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 01:48:46,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:46,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477699797] [2022-01-11 01:48:46,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477699797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:46,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:46,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:46,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668372957] [2022-01-11 01:48:46,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:46,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:46,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:46,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:46,269 INFO L87 Difference]: Start difference. First operand has 543 states, 538 states have (on average 1.546468401486989) internal successors, (832), 542 states have internal predecessors, (832), 0 states have call successors, (0), 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 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 01:48:46,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:46,440 INFO L93 Difference]: Finished difference Result 1101 states and 1683 transitions. [2022-01-11 01:48:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:46,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 01:48:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:46,453 INFO L225 Difference]: With dead ends: 1101 [2022-01-11 01:48:46,453 INFO L226 Difference]: Without dead ends: 626 [2022-01-11 01:48:46,457 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 01:48:46,459 INFO L933 BasicCegarLoop]: 804 mSDtfsCounter, 131 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:46,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1586 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:48:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-01-11 01:48:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 622. [2022-01-11 01:48:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 618 states have (on average 1.4919093851132685) internal successors, (922), 621 states have internal predecessors, (922), 0 states have call successors, (0), 0 states 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 01:48:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 922 transitions. [2022-01-11 01:48:46,514 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 922 transitions. Word has length 44 [2022-01-11 01:48:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:46,515 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 922 transitions. [2022-01-11 01:48:46,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 01:48:46,515 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 922 transitions. [2022-01-11 01:48:46,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 01:48:46,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:46,516 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] [2022-01-11 01:48:46,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:48:46,517 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 01:48:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:46,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1025617107, now seen corresponding path program 1 times [2022-01-11 01:48:46,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:46,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926371389] [2022-01-11 01:48:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:46,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:46,584 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 01:48:46,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:46,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926371389] [2022-01-11 01:48:46,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926371389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:46,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:46,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:46,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355310659] [2022-01-11 01:48:46,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:46,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:46,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:46,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:46,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:46,587 INFO L87 Difference]: Start difference. First operand 622 states and 922 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 01:48:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:46,637 INFO L93 Difference]: Finished difference Result 906 states and 1326 transitions. [2022-01-11 01:48:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:46,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 01:48:46,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:46,640 INFO L225 Difference]: With dead ends: 906 [2022-01-11 01:48:46,641 INFO L226 Difference]: Without dead ends: 744 [2022-01-11 01:48:46,643 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 01:48:46,644 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 772 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:46,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 877 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-01-11 01:48:46,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 734. [2022-01-11 01:48:46,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 730 states have (on average 1.478082191780822) internal successors, (1079), 733 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states 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 01:48:46,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1079 transitions. [2022-01-11 01:48:46,675 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1079 transitions. Word has length 44 [2022-01-11 01:48:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:46,676 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1079 transitions. [2022-01-11 01:48:46,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 01:48:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1079 transitions. [2022-01-11 01:48:46,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 01:48:46,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:46,685 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] [2022-01-11 01:48:46,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:48:46,688 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 01:48:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1960846222, now seen corresponding path program 1 times [2022-01-11 01:48:46,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:46,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133501905] [2022-01-11 01:48:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:46,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:46,756 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 01:48:46,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:46,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133501905] [2022-01-11 01:48:46,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133501905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:46,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:46,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:46,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155666256] [2022-01-11 01:48:46,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:46,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:46,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:46,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:46,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:46,758 INFO L87 Difference]: Start difference. First operand 734 states and 1079 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 01:48:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:46,853 INFO L93 Difference]: Finished difference Result 1145 states and 1656 transitions. [2022-01-11 01:48:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:46,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 01:48:46,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:46,859 INFO L225 Difference]: With dead ends: 1145 [2022-01-11 01:48:46,860 INFO L226 Difference]: Without dead ends: 883 [2022-01-11 01:48:46,860 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 01:48:46,861 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 102 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:46,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1547 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:48:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2022-01-11 01:48:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 879. [2022-01-11 01:48:46,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 875 states have (on average 1.457142857142857) internal successors, (1275), 878 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states 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 01:48:46,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1275 transitions. [2022-01-11 01:48:46,885 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1275 transitions. Word has length 44 [2022-01-11 01:48:46,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:46,885 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 1275 transitions. [2022-01-11 01:48:46,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 01:48:46,885 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1275 transitions. [2022-01-11 01:48:46,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 01:48:46,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:46,886 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] [2022-01-11 01:48:46,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:48:46,887 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 01:48:46,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1552021997, now seen corresponding path program 1 times [2022-01-11 01:48:46,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:46,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384798099] [2022-01-11 01:48:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:46,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:46,939 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 01:48:46,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:46,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384798099] [2022-01-11 01:48:46,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384798099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:46,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:46,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:46,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551416312] [2022-01-11 01:48:46,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:46,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:46,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:46,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:46,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:46,941 INFO L87 Difference]: Start difference. First operand 879 states and 1275 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 01:48:46,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:46,996 INFO L93 Difference]: Finished difference Result 1631 states and 2323 transitions. [2022-01-11 01:48:46,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:46,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-11 01:48:46,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:47,001 INFO L225 Difference]: With dead ends: 1631 [2022-01-11 01:48:47,001 INFO L226 Difference]: Without dead ends: 1267 [2022-01-11 01:48:47,002 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 01:48:47,003 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 751 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:47,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 903 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:47,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-01-11 01:48:47,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1263. [2022-01-11 01:48:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1259 states have (on average 1.4193804606830818) internal successors, (1787), 1262 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states 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 01:48:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1787 transitions. [2022-01-11 01:48:47,031 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1787 transitions. Word has length 44 [2022-01-11 01:48:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:47,032 INFO L470 AbstractCegarLoop]: Abstraction has 1263 states and 1787 transitions. [2022-01-11 01:48:47,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 01:48:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1787 transitions. [2022-01-11 01:48:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 01:48:47,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:47,033 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] [2022-01-11 01:48:47,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:48:47,033 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 01:48:47,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2094367864, now seen corresponding path program 1 times [2022-01-11 01:48:47,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:47,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041196103] [2022-01-11 01:48:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:47,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:47,077 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 01:48:47,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:47,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041196103] [2022-01-11 01:48:47,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041196103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:47,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:47,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:47,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605179283] [2022-01-11 01:48:47,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:47,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:47,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:47,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:47,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:47,079 INFO L87 Difference]: Start difference. First operand 1263 states and 1787 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 01:48:47,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:47,138 INFO L93 Difference]: Finished difference Result 2206 states and 3083 transitions. [2022-01-11 01:48:47,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:47,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-11 01:48:47,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:47,142 INFO L225 Difference]: With dead ends: 2206 [2022-01-11 01:48:47,143 INFO L226 Difference]: Without dead ends: 1426 [2022-01-11 01:48:47,144 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 01:48:47,147 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 88 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:47,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 1519 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2022-01-11 01:48:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1403. [2022-01-11 01:48:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1399 states have (on average 1.3974267333809864) internal successors, (1955), 1402 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states 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 01:48:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1955 transitions. [2022-01-11 01:48:47,185 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1955 transitions. Word has length 45 [2022-01-11 01:48:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:47,187 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 1955 transitions. [2022-01-11 01:48:47,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 01:48:47,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1955 transitions. [2022-01-11 01:48:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 01:48:47,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:47,191 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] [2022-01-11 01:48:47,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:48:47,191 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 01:48:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2123950327, now seen corresponding path program 1 times [2022-01-11 01:48:47,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:47,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382748124] [2022-01-11 01:48:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:47,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:47,261 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 01:48:47,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:47,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382748124] [2022-01-11 01:48:47,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382748124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:47,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:47,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:47,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233106992] [2022-01-11 01:48:47,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:47,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:47,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:47,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:47,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:47,263 INFO L87 Difference]: Start difference. First operand 1403 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 01:48:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:47,342 INFO L93 Difference]: Finished difference Result 3032 states and 4156 transitions. [2022-01-11 01:48:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:47,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-11 01:48:47,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:47,349 INFO L225 Difference]: With dead ends: 3032 [2022-01-11 01:48:47,349 INFO L226 Difference]: Without dead ends: 2122 [2022-01-11 01:48:47,350 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 01:48:47,355 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 737 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:47,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 870 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:47,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2022-01-11 01:48:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2068. [2022-01-11 01:48:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2064 states have (on average 1.369670542635659) internal successors, (2827), 2067 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states 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 01:48:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2827 transitions. [2022-01-11 01:48:47,413 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2827 transitions. Word has length 45 [2022-01-11 01:48:47,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:47,414 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 2827 transitions. [2022-01-11 01:48:47,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 01:48:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2827 transitions. [2022-01-11 01:48:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 01:48:47,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:47,415 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] [2022-01-11 01:48:47,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:48:47,415 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 01:48:47,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:47,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1361471154, now seen corresponding path program 1 times [2022-01-11 01:48:47,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:47,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801408189] [2022-01-11 01:48:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:47,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 01:48:47,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:47,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801408189] [2022-01-11 01:48:47,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801408189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:47,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:47,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:48:47,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561460533] [2022-01-11 01:48:47,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:47,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:48:47,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:47,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:48:47,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:48:47,490 INFO L87 Difference]: Start difference. First operand 2068 states and 2827 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 01:48:47,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:47,622 INFO L93 Difference]: Finished difference Result 4779 states and 6485 transitions. [2022-01-11 01:48:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:48:47,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 52 [2022-01-11 01:48:47,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:47,635 INFO L225 Difference]: With dead ends: 4779 [2022-01-11 01:48:47,635 INFO L226 Difference]: Without dead ends: 3410 [2022-01-11 01:48:47,639 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 01:48:47,641 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 390 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:47,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 3224 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2022-01-11 01:48:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 2116. [2022-01-11 01:48:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2112 states have (on average 1.3527462121212122) internal successors, (2857), 2115 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states 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 01:48:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2857 transitions. [2022-01-11 01:48:47,775 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2857 transitions. Word has length 52 [2022-01-11 01:48:47,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:47,775 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 2857 transitions. [2022-01-11 01:48:47,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 01:48:47,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2857 transitions. [2022-01-11 01:48:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 01:48:47,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:47,776 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] [2022-01-11 01:48:47,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:48:47,776 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 01:48:47,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:47,776 INFO L85 PathProgramCache]: Analyzing trace with hash -983195887, now seen corresponding path program 1 times [2022-01-11 01:48:47,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:47,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729631377] [2022-01-11 01:48:47,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:47,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 01:48:47,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:47,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729631377] [2022-01-11 01:48:47,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729631377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:47,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:47,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:48:47,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004894396] [2022-01-11 01:48:47,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:47,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:48:47,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:47,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:48:47,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:48:47,828 INFO L87 Difference]: Start difference. First operand 2116 states and 2857 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 01:48:47,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:47,986 INFO L93 Difference]: Finished difference Result 4479 states and 6014 transitions. [2022-01-11 01:48:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:48:47,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 52 [2022-01-11 01:48:47,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:47,994 INFO L225 Difference]: With dead ends: 4479 [2022-01-11 01:48:47,995 INFO L226 Difference]: Without dead ends: 2872 [2022-01-11 01:48:47,996 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 01:48:47,997 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 351 mSDsluCounter, 2460 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:47,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 3236 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2022-01-11 01:48:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2128. [2022-01-11 01:48:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2124 states have (on average 1.3366290018832392) internal successors, (2839), 2127 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states 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 01:48:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 2839 transitions. [2022-01-11 01:48:48,102 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 2839 transitions. Word has length 52 [2022-01-11 01:48:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:48,102 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 2839 transitions. [2022-01-11 01:48:48,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 01:48:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 2839 transitions. [2022-01-11 01:48:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 01:48:48,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:48,103 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] [2022-01-11 01:48:48,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:48:48,104 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:48:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:48,104 INFO L85 PathProgramCache]: Analyzing trace with hash -971879760, now seen corresponding path program 1 times [2022-01-11 01:48:48,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:48,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663596224] [2022-01-11 01:48:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:48,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:48,183 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 01:48:48,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:48,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663596224] [2022-01-11 01:48:48,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663596224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:48,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:48,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 01:48:48,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658928117] [2022-01-11 01:48:48,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:48,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 01:48:48,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:48,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 01:48:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 01:48:48,185 INFO L87 Difference]: Start difference. First operand 2128 states and 2839 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 01:48:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:48,344 INFO L93 Difference]: Finished difference Result 2478 states and 3291 transitions. [2022-01-11 01:48:48,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 01:48:48,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-11 01:48:48,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:48,352 INFO L225 Difference]: With dead ends: 2478 [2022-01-11 01:48:48,352 INFO L226 Difference]: Without dead ends: 2476 [2022-01-11 01:48:48,352 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 01:48:48,353 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 1609 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:48,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1609 Valid, 877 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:48,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2022-01-11 01:48:48,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2126. [2022-01-11 01:48:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2123 states have (on average 1.3320772491756947) internal successors, (2828), 2125 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states 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 01:48:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 2828 transitions. [2022-01-11 01:48:48,469 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 2828 transitions. Word has length 52 [2022-01-11 01:48:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:48,470 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 2828 transitions. [2022-01-11 01:48:48,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 01:48:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 2828 transitions. [2022-01-11 01:48:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 01:48:48,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:48,471 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] [2022-01-11 01:48:48,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:48:48,471 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 01:48:48,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:48,471 INFO L85 PathProgramCache]: Analyzing trace with hash -63500174, now seen corresponding path program 1 times [2022-01-11 01:48:48,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:48,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301868170] [2022-01-11 01:48:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:48,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:48,619 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 01:48:48,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:48,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301868170] [2022-01-11 01:48:48,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301868170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:48:48,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708750090] [2022-01-11 01:48:48,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:48,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:48:48,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:48:48,621 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 01:48:48,638 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 01:48:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:48,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 01:48:48,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:48:48,962 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 01:48:48,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:48:49,202 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 01:48:49,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708750090] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:48:49,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 01:48:49,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-11 01:48:49,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824596826] [2022-01-11 01:48:49,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 01:48:49,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 01:48:49,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:49,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 01:48:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-11 01:48:49,204 INFO L87 Difference]: Start difference. First operand 2126 states and 2828 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 01:48:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:49,630 INFO L93 Difference]: Finished difference Result 5619 states and 7414 transitions. [2022-01-11 01:48:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 01:48:49,631 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 53 [2022-01-11 01:48:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:49,644 INFO L225 Difference]: With dead ends: 5619 [2022-01-11 01:48:49,644 INFO L226 Difference]: Without dead ends: 5617 [2022-01-11 01:48:49,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 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 01:48:49,646 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 2186 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2186 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:49,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2186 Valid, 2991 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:49,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5617 states. [2022-01-11 01:48:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5617 to 3647. [2022-01-11 01:48:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 3644 states have (on average 1.3229967069154775) internal successors, (4821), 3646 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states 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 01:48:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 4821 transitions. [2022-01-11 01:48:49,890 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 4821 transitions. Word has length 53 [2022-01-11 01:48:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:49,891 INFO L470 AbstractCegarLoop]: Abstraction has 3647 states and 4821 transitions. [2022-01-11 01:48:49,891 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 01:48:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 4821 transitions. [2022-01-11 01:48:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 01:48:49,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:49,892 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2022-01-11 01:48:49,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 01:48:50,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-11 01:48:50,108 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 01:48:50,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:50,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2027198594, now seen corresponding path program 2 times [2022-01-11 01:48:50,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:50,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815002337] [2022-01-11 01:48:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:50,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:48:50,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:50,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815002337] [2022-01-11 01:48:50,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815002337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:50,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:50,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:50,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150047856] [2022-01-11 01:48:50,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:50,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:50,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:50,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:50,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:50,132 INFO L87 Difference]: Start difference. First operand 3647 states and 4821 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 01:48:50,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:50,297 INFO L93 Difference]: Finished difference Result 5285 states and 6986 transitions. [2022-01-11 01:48:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:50,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 01:48:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:50,304 INFO L225 Difference]: With dead ends: 5285 [2022-01-11 01:48:50,304 INFO L226 Difference]: Without dead ends: 2557 [2022-01-11 01:48:50,306 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 01:48:50,307 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 733 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:50,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 958 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:50,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2022-01-11 01:48:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2529. [2022-01-11 01:48:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2526 states have (on average 1.3131433095803642) internal successors, (3317), 2528 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states 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 01:48:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 3317 transitions. [2022-01-11 01:48:50,438 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 3317 transitions. Word has length 56 [2022-01-11 01:48:50,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:50,438 INFO L470 AbstractCegarLoop]: Abstraction has 2529 states and 3317 transitions. [2022-01-11 01:48:50,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 01:48:50,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 3317 transitions. [2022-01-11 01:48:50,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 01:48:50,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:50,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:50,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:48:50,440 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 01:48:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2044895330, now seen corresponding path program 1 times [2022-01-11 01:48:50,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:50,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095635200] [2022-01-11 01:48:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:50,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:50,470 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 01:48:50,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:50,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095635200] [2022-01-11 01:48:50,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095635200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:50,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:50,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:50,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631021855] [2022-01-11 01:48:50,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:50,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:50,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:50,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:50,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:50,472 INFO L87 Difference]: Start difference. First operand 2529 states and 3317 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 01:48:50,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:50,707 INFO L93 Difference]: Finished difference Result 5908 states and 7597 transitions. [2022-01-11 01:48:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:50,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-11 01:48:50,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:50,723 INFO L225 Difference]: With dead ends: 5908 [2022-01-11 01:48:50,723 INFO L226 Difference]: Without dead ends: 3095 [2022-01-11 01:48:50,726 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 01:48:50,727 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 87 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:50,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1636 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:50,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-01-11 01:48:50,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3095. [2022-01-11 01:48:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3092 states have (on average 1.2913971539456663) internal successors, (3993), 3094 states have internal predecessors, (3993), 0 states have call successors, (0), 0 states 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 01:48:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 3993 transitions. [2022-01-11 01:48:50,940 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 3993 transitions. Word has length 60 [2022-01-11 01:48:50,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:50,941 INFO L470 AbstractCegarLoop]: Abstraction has 3095 states and 3993 transitions. [2022-01-11 01:48:50,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 01:48:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 3993 transitions. [2022-01-11 01:48:50,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 01:48:50,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:50,942 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1] [2022-01-11 01:48:50,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:48:50,943 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:48:50,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:50,943 INFO L85 PathProgramCache]: Analyzing trace with hash 130553880, now seen corresponding path program 1 times [2022-01-11 01:48:50,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:50,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200721758] [2022-01-11 01:48:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:50,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 01:48:50,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:50,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200721758] [2022-01-11 01:48:50,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200721758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:50,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:50,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:50,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227617283] [2022-01-11 01:48:50,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:50,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:50,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:50,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:50,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:50,969 INFO L87 Difference]: Start difference. First operand 3095 states and 3993 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:51,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:51,184 INFO L93 Difference]: Finished difference Result 5665 states and 7236 transitions. [2022-01-11 01:48:51,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:51,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 01:48:51,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:51,197 INFO L225 Difference]: With dead ends: 5665 [2022-01-11 01:48:51,197 INFO L226 Difference]: Without dead ends: 3095 [2022-01-11 01:48:51,200 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 01:48:51,201 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 723 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:51,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 864 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:51,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-01-11 01:48:51,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3095. [2022-01-11 01:48:51,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 3092 states have (on average 1.2732858990944373) internal successors, (3937), 3094 states have internal predecessors, (3937), 0 states have call successors, (0), 0 states 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 01:48:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 3937 transitions. [2022-01-11 01:48:51,416 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 3937 transitions. Word has length 68 [2022-01-11 01:48:51,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:51,416 INFO L470 AbstractCegarLoop]: Abstraction has 3095 states and 3937 transitions. [2022-01-11 01:48:51,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:51,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 3937 transitions. [2022-01-11 01:48:51,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 01:48:51,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:51,418 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1] [2022-01-11 01:48:51,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:48:51,419 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:48:51,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:51,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1342031509, now seen corresponding path program 1 times [2022-01-11 01:48:51,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:51,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727355643] [2022-01-11 01:48:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:51,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 01:48:51,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:51,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727355643] [2022-01-11 01:48:51,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727355643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:51,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:51,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:51,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984041382] [2022-01-11 01:48:51,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:51,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:51,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:51,454 INFO L87 Difference]: Start difference. First operand 3095 states and 3937 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:51,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:51,629 INFO L93 Difference]: Finished difference Result 5159 states and 6527 transitions. [2022-01-11 01:48:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:51,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 01:48:51,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:51,633 INFO L225 Difference]: With dead ends: 5159 [2022-01-11 01:48:51,633 INFO L226 Difference]: Without dead ends: 2549 [2022-01-11 01:48:51,636 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 01:48:51,636 INFO L933 BasicCegarLoop]: 858 mSDtfsCounter, 97 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1620 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 01:48:51,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1620 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:51,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2022-01-11 01:48:51,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2547. [2022-01-11 01:48:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 2544 states have (on average 1.2727987421383649) internal successors, (3238), 2546 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states 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 01:48:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3238 transitions. [2022-01-11 01:48:51,773 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3238 transitions. Word has length 69 [2022-01-11 01:48:51,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:51,774 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 3238 transitions. [2022-01-11 01:48:51,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:51,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3238 transitions. [2022-01-11 01:48:51,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:51,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:51,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:51,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:48:51,775 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 01:48:51,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:51,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1492012093, now seen corresponding path program 1 times [2022-01-11 01:48:51,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:51,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416311912] [2022-01-11 01:48:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:51,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:51,804 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 01:48:51,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:51,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416311912] [2022-01-11 01:48:51,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416311912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:51,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:51,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:51,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572560152] [2022-01-11 01:48:51,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:51,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:51,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:51,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:51,807 INFO L87 Difference]: Start difference. First operand 2547 states and 3238 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:52,003 INFO L93 Difference]: Finished difference Result 3300 states and 4363 transitions. [2022-01-11 01:48:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:52,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:52,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:52,008 INFO L225 Difference]: With dead ends: 3300 [2022-01-11 01:48:52,008 INFO L226 Difference]: Without dead ends: 2877 [2022-01-11 01:48:52,009 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 01:48:52,009 INFO L933 BasicCegarLoop]: 772 mSDtfsCounter, 709 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1309 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 01:48:52,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1309 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:52,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2022-01-11 01:48:52,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2873. [2022-01-11 01:48:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.297212543554007) internal successors, (3723), 2872 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states 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 01:48:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3723 transitions. [2022-01-11 01:48:52,186 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3723 transitions. Word has length 77 [2022-01-11 01:48:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:52,186 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3723 transitions. [2022-01-11 01:48:52,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3723 transitions. [2022-01-11 01:48:52,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:52,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:52,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:52,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:48:52,188 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 01:48:52,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:52,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1787721501, now seen corresponding path program 1 times [2022-01-11 01:48:52,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:52,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382950892] [2022-01-11 01:48:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:52,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:52,206 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 01:48:52,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:52,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382950892] [2022-01-11 01:48:52,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382950892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:52,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:52,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:52,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032959998] [2022-01-11 01:48:52,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:52,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:52,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:52,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:52,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:52,208 INFO L87 Difference]: Start difference. First operand 2873 states and 3723 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:52,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:52,366 INFO L93 Difference]: Finished difference Result 3621 states and 4841 transitions. [2022-01-11 01:48:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:52,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:52,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:52,370 INFO L225 Difference]: With dead ends: 3621 [2022-01-11 01:48:52,370 INFO L226 Difference]: Without dead ends: 2873 [2022-01-11 01:48:52,371 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 01:48:52,371 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 759 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 766 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 01:48:52,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 766 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:52,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-11 01:48:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-11 01:48:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2944250871080138) internal successors, (3715), 2872 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states 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 01:48:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3715 transitions. [2022-01-11 01:48:52,510 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3715 transitions. Word has length 77 [2022-01-11 01:48:52,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:52,510 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3715 transitions. [2022-01-11 01:48:52,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3715 transitions. [2022-01-11 01:48:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:52,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:52,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:52,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:48:52,511 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 01:48:52,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:52,512 INFO L85 PathProgramCache]: Analyzing trace with hash -550334525, now seen corresponding path program 1 times [2022-01-11 01:48:52,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:52,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845713084] [2022-01-11 01:48:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:52,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:52,530 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 01:48:52,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:52,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845713084] [2022-01-11 01:48:52,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845713084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:52,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:52,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:52,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975619404] [2022-01-11 01:48:52,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:52,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:52,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:52,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:52,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:52,532 INFO L87 Difference]: Start difference. First operand 2873 states and 3715 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:52,689 INFO L93 Difference]: Finished difference Result 3620 states and 4824 transitions. [2022-01-11 01:48:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:52,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:52,693 INFO L225 Difference]: With dead ends: 3620 [2022-01-11 01:48:52,694 INFO L226 Difference]: Without dead ends: 2873 [2022-01-11 01:48:52,695 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 01:48:52,695 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 753 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 761 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 01:48:52,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 761 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-11 01:48:52,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-11 01:48:52,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.291637630662021) internal successors, (3707), 2872 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states 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 01:48:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3707 transitions. [2022-01-11 01:48:52,838 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3707 transitions. Word has length 77 [2022-01-11 01:48:52,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:52,839 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3707 transitions. [2022-01-11 01:48:52,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:52,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3707 transitions. [2022-01-11 01:48:52,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:52,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:52,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:52,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:48:52,840 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 01:48:52,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:52,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1480250141, now seen corresponding path program 1 times [2022-01-11 01:48:52,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:52,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698356202] [2022-01-11 01:48:52,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:52,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:52,861 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 01:48:52,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:52,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698356202] [2022-01-11 01:48:52,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698356202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:52,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:52,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:52,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377243186] [2022-01-11 01:48:52,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:52,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:52,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:52,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:52,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:52,863 INFO L87 Difference]: Start difference. First operand 2873 states and 3707 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:53,035 INFO L93 Difference]: Finished difference Result 3619 states and 4807 transitions. [2022-01-11 01:48:53,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:53,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:53,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:53,039 INFO L225 Difference]: With dead ends: 3619 [2022-01-11 01:48:53,039 INFO L226 Difference]: Without dead ends: 2873 [2022-01-11 01:48:53,040 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 01:48:53,040 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 747 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 756 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 01:48:53,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 756 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-11 01:48:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-11 01:48:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2888501742160279) internal successors, (3699), 2872 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states 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 01:48:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3699 transitions. [2022-01-11 01:48:53,188 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3699 transitions. Word has length 77 [2022-01-11 01:48:53,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:53,188 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3699 transitions. [2022-01-11 01:48:53,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3699 transitions. [2022-01-11 01:48:53,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:53,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:53,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:53,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:48:53,192 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 01:48:53,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:53,192 INFO L85 PathProgramCache]: Analyzing trace with hash 567962563, now seen corresponding path program 1 times [2022-01-11 01:48:53,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:53,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098862210] [2022-01-11 01:48:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:53,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:48:53,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:53,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098862210] [2022-01-11 01:48:53,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098862210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:53,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:53,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:53,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065539035] [2022-01-11 01:48:53,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:53,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:53,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:53,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:53,216 INFO L87 Difference]: Start difference. First operand 2873 states and 3699 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:53,430 INFO L93 Difference]: Finished difference Result 3618 states and 4790 transitions. [2022-01-11 01:48:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:53,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:53,435 INFO L225 Difference]: With dead ends: 3618 [2022-01-11 01:48:53,435 INFO L226 Difference]: Without dead ends: 2873 [2022-01-11 01:48:53,436 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 01:48:53,437 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 741 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 751 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 01:48:53,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 751 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-11 01:48:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-11 01:48:53,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2860627177700348) internal successors, (3691), 2872 states have internal predecessors, (3691), 0 states have call successors, (0), 0 states 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 01:48:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3691 transitions. [2022-01-11 01:48:53,649 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3691 transitions. Word has length 77 [2022-01-11 01:48:53,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:53,649 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3691 transitions. [2022-01-11 01:48:53,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:53,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3691 transitions. [2022-01-11 01:48:53,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:53,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:53,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:53,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:48:53,650 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 01:48:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:53,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1028534045, now seen corresponding path program 1 times [2022-01-11 01:48:53,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:53,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697439149] [2022-01-11 01:48:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:53,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:48:53,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:53,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697439149] [2022-01-11 01:48:53,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697439149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:53,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:53,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:53,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720575180] [2022-01-11 01:48:53,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:53,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:53,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:53,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:53,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:53,674 INFO L87 Difference]: Start difference. First operand 2873 states and 3691 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:53,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:53,870 INFO L93 Difference]: Finished difference Result 3617 states and 4773 transitions. [2022-01-11 01:48:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:53,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:53,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:53,875 INFO L225 Difference]: With dead ends: 3617 [2022-01-11 01:48:53,875 INFO L226 Difference]: Without dead ends: 2873 [2022-01-11 01:48:53,877 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 01:48:53,878 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 676 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 780 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 01:48:53,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 780 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-11 01:48:54,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-11 01:48:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2790940766550523) internal successors, (3671), 2872 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states 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 01:48:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3671 transitions. [2022-01-11 01:48:54,054 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3671 transitions. Word has length 77 [2022-01-11 01:48:54,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:54,054 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3671 transitions. [2022-01-11 01:48:54,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3671 transitions. [2022-01-11 01:48:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:54,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:54,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:54,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:48:54,056 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 01:48:54,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:54,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1690912707, now seen corresponding path program 1 times [2022-01-11 01:48:54,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:54,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976881286] [2022-01-11 01:48:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:54,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:54,081 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 01:48:54,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:54,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976881286] [2022-01-11 01:48:54,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976881286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:54,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:54,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:54,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777656152] [2022-01-11 01:48:54,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:54,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:54,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:54,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:54,084 INFO L87 Difference]: Start difference. First operand 2873 states and 3671 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:54,309 INFO L93 Difference]: Finished difference Result 3616 states and 4732 transitions. [2022-01-11 01:48:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:54,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:54,313 INFO L225 Difference]: With dead ends: 3616 [2022-01-11 01:48:54,313 INFO L226 Difference]: Without dead ends: 2873 [2022-01-11 01:48:54,315 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 01:48:54,315 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 664 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 767 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 01:48:54,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 767 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:54,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-11 01:48:54,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-11 01:48:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2721254355400697) internal successors, (3651), 2872 states have internal predecessors, (3651), 0 states have call successors, (0), 0 states 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 01:48:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3651 transitions. [2022-01-11 01:48:54,508 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3651 transitions. Word has length 77 [2022-01-11 01:48:54,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:54,508 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3651 transitions. [2022-01-11 01:48:54,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3651 transitions. [2022-01-11 01:48:54,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:54,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:54,509 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] [2022-01-11 01:48:54,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:48:54,509 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 01:48:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:54,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1416211806, now seen corresponding path program 1 times [2022-01-11 01:48:54,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:54,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427632697] [2022-01-11 01:48:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:54,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:54,531 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 01:48:54,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:54,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427632697] [2022-01-11 01:48:54,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427632697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:54,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:54,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:54,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333198457] [2022-01-11 01:48:54,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:54,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:54,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:54,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:54,533 INFO L87 Difference]: Start difference. First operand 2873 states and 3651 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:54,717 INFO L93 Difference]: Finished difference Result 3615 states and 4691 transitions. [2022-01-11 01:48:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:54,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:54,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:54,722 INFO L225 Difference]: With dead ends: 3615 [2022-01-11 01:48:54,722 INFO L226 Difference]: Without dead ends: 2873 [2022-01-11 01:48:54,723 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 01:48:54,724 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 652 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 754 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 01:48:54,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 754 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-11 01:48:54,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-11 01:48:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2651567944250872) internal successors, (3631), 2872 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states 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 01:48:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3631 transitions. [2022-01-11 01:48:54,927 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3631 transitions. Word has length 77 [2022-01-11 01:48:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:54,927 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3631 transitions. [2022-01-11 01:48:54,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3631 transitions. [2022-01-11 01:48:54,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:54,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:54,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:54,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:48:54,929 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 01:48:54,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1961482881, now seen corresponding path program 1 times [2022-01-11 01:48:54,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:54,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103344516] [2022-01-11 01:48:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:54,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:54,947 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 01:48:54,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:54,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103344516] [2022-01-11 01:48:54,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103344516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:54,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:54,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:54,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073293521] [2022-01-11 01:48:54,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:54,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:54,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:54,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:54,949 INFO L87 Difference]: Start difference. First operand 2873 states and 3631 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:55,135 INFO L93 Difference]: Finished difference Result 3614 states and 4650 transitions. [2022-01-11 01:48:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:55,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:55,140 INFO L225 Difference]: With dead ends: 3614 [2022-01-11 01:48:55,140 INFO L226 Difference]: Without dead ends: 2873 [2022-01-11 01:48:55,141 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 01:48:55,142 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 640 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 741 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 01:48:55,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 741 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-11 01:48:55,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-11 01:48:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.2581881533101045) internal successors, (3611), 2872 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states 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 01:48:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3611 transitions. [2022-01-11 01:48:55,316 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3611 transitions. Word has length 77 [2022-01-11 01:48:55,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:55,316 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3611 transitions. [2022-01-11 01:48:55,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:55,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3611 transitions. [2022-01-11 01:48:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:55,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:55,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:55,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:48:55,317 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 01:48:55,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1319572448, now seen corresponding path program 1 times [2022-01-11 01:48:55,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:55,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725681826] [2022-01-11 01:48:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:55,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:55,339 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 01:48:55,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:55,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725681826] [2022-01-11 01:48:55,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725681826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:55,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:55,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:55,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396615723] [2022-01-11 01:48:55,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:55,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:55,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:55,343 INFO L87 Difference]: Start difference. First operand 2873 states and 3611 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:55,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:55,614 INFO L93 Difference]: Finished difference Result 3613 states and 4609 transitions. [2022-01-11 01:48:55,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:55,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:55,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:55,618 INFO L225 Difference]: With dead ends: 3613 [2022-01-11 01:48:55,618 INFO L226 Difference]: Without dead ends: 2873 [2022-01-11 01:48:55,619 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 01:48:55,620 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 628 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 728 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 01:48:55,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 728 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:55,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-01-11 01:48:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-01-11 01:48:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2870 states have (on average 1.251219512195122) internal successors, (3591), 2872 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states 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 01:48:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3591 transitions. [2022-01-11 01:48:55,864 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3591 transitions. Word has length 77 [2022-01-11 01:48:55,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:55,865 INFO L470 AbstractCegarLoop]: Abstraction has 2873 states and 3591 transitions. [2022-01-11 01:48:55,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3591 transitions. [2022-01-11 01:48:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:55,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:55,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:55,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:48:55,866 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 01:48:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:55,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1812929087, now seen corresponding path program 1 times [2022-01-11 01:48:55,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:55,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159823295] [2022-01-11 01:48:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:55,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:55,900 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 01:48:55,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:55,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159823295] [2022-01-11 01:48:55,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159823295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:55,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:55,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:48:55,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248933184] [2022-01-11 01:48:55,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:55,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:48:55,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:55,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:48:55,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:48:55,901 INFO L87 Difference]: Start difference. First operand 2873 states and 3591 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:56,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:56,156 INFO L93 Difference]: Finished difference Result 4008 states and 5123 transitions. [2022-01-11 01:48:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:48:56,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:56,162 INFO L225 Difference]: With dead ends: 4008 [2022-01-11 01:48:56,163 INFO L226 Difference]: Without dead ends: 3275 [2022-01-11 01:48:56,164 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 01:48:56,165 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 1556 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:56,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 1966 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2022-01-11 01:48:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2879. [2022-01-11 01:48:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2876 states have (on average 1.2465229485396383) internal successors, (3585), 2878 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states 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 01:48:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3585 transitions. [2022-01-11 01:48:56,367 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3585 transitions. Word has length 77 [2022-01-11 01:48:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:56,368 INFO L470 AbstractCegarLoop]: Abstraction has 2879 states and 3585 transitions. [2022-01-11 01:48:56,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:56,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3585 transitions. [2022-01-11 01:48:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:56,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:56,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:56,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:48:56,369 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 01:48:56,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:56,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1348847616, now seen corresponding path program 1 times [2022-01-11 01:48:56,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:56,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269336620] [2022-01-11 01:48:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:56,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:56,395 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 01:48:56,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:56,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269336620] [2022-01-11 01:48:56,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269336620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:56,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:56,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:48:56,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412972381] [2022-01-11 01:48:56,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:56,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:48:56,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:56,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:48:56,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:48:56,396 INFO L87 Difference]: Start difference. First operand 2879 states and 3585 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:56,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:56,645 INFO L93 Difference]: Finished difference Result 4124 states and 5238 transitions. [2022-01-11 01:48:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:48:56,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:56,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:56,652 INFO L225 Difference]: With dead ends: 4124 [2022-01-11 01:48:56,652 INFO L226 Difference]: Without dead ends: 3399 [2022-01-11 01:48:56,653 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 01:48:56,655 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 1362 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:56,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1362 Valid, 1964 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:56,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2022-01-11 01:48:56,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 2885. [2022-01-11 01:48:56,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2885 states, 2882 states have (on average 1.2418459403192228) internal successors, (3579), 2884 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states 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 01:48:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 3579 transitions. [2022-01-11 01:48:56,848 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 3579 transitions. Word has length 77 [2022-01-11 01:48:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:56,848 INFO L470 AbstractCegarLoop]: Abstraction has 2885 states and 3579 transitions. [2022-01-11 01:48:56,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:56,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 3579 transitions. [2022-01-11 01:48:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:56,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:56,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:56,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:48:56,850 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 01:48:56,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:56,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2023436097, now seen corresponding path program 1 times [2022-01-11 01:48:56,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:56,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823815451] [2022-01-11 01:48:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:56,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:56,904 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 01:48:56,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:56,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823815451] [2022-01-11 01:48:56,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823815451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:56,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:56,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:48:56,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985813863] [2022-01-11 01:48:56,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:56,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:48:56,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:56,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:48:56,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:48:56,906 INFO L87 Difference]: Start difference. First operand 2885 states and 3579 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:57,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:57,188 INFO L93 Difference]: Finished difference Result 4191 states and 5288 transitions. [2022-01-11 01:48:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:48:57,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:57,193 INFO L225 Difference]: With dead ends: 4191 [2022-01-11 01:48:57,193 INFO L226 Difference]: Without dead ends: 3467 [2022-01-11 01:48:57,195 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 01:48:57,195 INFO L933 BasicCegarLoop]: 676 mSDtfsCounter, 1259 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:57,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 2340 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3467 states. [2022-01-11 01:48:57,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3467 to 2891. [2022-01-11 01:48:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 2888 states have (on average 1.2371883656509695) internal successors, (3573), 2890 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states 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 01:48:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 3573 transitions. [2022-01-11 01:48:57,388 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 3573 transitions. Word has length 77 [2022-01-11 01:48:57,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:57,388 INFO L470 AbstractCegarLoop]: Abstraction has 2891 states and 3573 transitions. [2022-01-11 01:48:57,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:57,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 3573 transitions. [2022-01-11 01:48:57,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:48:57,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:57,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:48:57,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:48:57,389 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 01:48:57,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:57,390 INFO L85 PathProgramCache]: Analyzing trace with hash -160240830, now seen corresponding path program 1 times [2022-01-11 01:48:57,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:57,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335384672] [2022-01-11 01:48:57,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:57,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:57,415 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 01:48:57,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:57,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335384672] [2022-01-11 01:48:57,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335384672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:57,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:57,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:57,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073332161] [2022-01-11 01:48:57,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:57,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:57,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:57,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:57,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:57,416 INFO L87 Difference]: Start difference. First operand 2891 states and 3573 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:57,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:57,665 INFO L93 Difference]: Finished difference Result 4318 states and 5382 transitions. [2022-01-11 01:48:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:57,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:48:57,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:57,670 INFO L225 Difference]: With dead ends: 4318 [2022-01-11 01:48:57,670 INFO L226 Difference]: Without dead ends: 3562 [2022-01-11 01:48:57,672 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 01:48:57,672 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 565 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:57,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 1114 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:57,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2022-01-11 01:48:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3494. [2022-01-11 01:48:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 3491 states have (on average 1.2391864795187626) internal successors, (4326), 3493 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states 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 01:48:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 4326 transitions. [2022-01-11 01:48:57,944 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 4326 transitions. Word has length 77 [2022-01-11 01:48:57,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:57,945 INFO L470 AbstractCegarLoop]: Abstraction has 3494 states and 4326 transitions. [2022-01-11 01:48:57,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 4326 transitions. [2022-01-11 01:48:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:48:57,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:57,947 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:57,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 01:48:57,947 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:48:57,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1741392908, now seen corresponding path program 1 times [2022-01-11 01:48:57,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:57,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106026085] [2022-01-11 01:48:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:57,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-11 01:48:57,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:57,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106026085] [2022-01-11 01:48:57,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106026085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:57,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:57,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:48:57,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572917413] [2022-01-11 01:48:57,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:57,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:57,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:57,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:57,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:57,969 INFO L87 Difference]: Start difference. First operand 3494 states and 4326 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:48:58,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:58,320 INFO L93 Difference]: Finished difference Result 6664 states and 8309 transitions. [2022-01-11 01:48:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:58,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 110 [2022-01-11 01:48:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:58,327 INFO L225 Difference]: With dead ends: 6664 [2022-01-11 01:48:58,327 INFO L226 Difference]: Without dead ends: 4809 [2022-01-11 01:48:58,332 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 01:48:58,332 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 650 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:58,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 765 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2022-01-11 01:48:58,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4637. [2022-01-11 01:48:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4637 states, 4634 states have (on average 1.2423392317652135) internal successors, (5757), 4636 states have internal predecessors, (5757), 0 states have call successors, (0), 0 states 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 01:48:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4637 states to 4637 states and 5757 transitions. [2022-01-11 01:48:58,700 INFO L78 Accepts]: Start accepts. Automaton has 4637 states and 5757 transitions. Word has length 110 [2022-01-11 01:48:58,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:58,700 INFO L470 AbstractCegarLoop]: Abstraction has 4637 states and 5757 transitions. [2022-01-11 01:48:58,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:48:58,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4637 states and 5757 transitions. [2022-01-11 01:48:58,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:48:58,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:58,703 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:58,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 01:48:58,703 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:48:58,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash 343008676, now seen corresponding path program 1 times [2022-01-11 01:48:58,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:58,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935190023] [2022-01-11 01:48:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:58,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 01:48:58,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:58,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935190023] [2022-01-11 01:48:58,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935190023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:58,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:58,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:58,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684719431] [2022-01-11 01:48:58,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:58,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:58,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:58,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:58,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:58,765 INFO L87 Difference]: Start difference. First operand 4637 states and 5757 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:59,128 INFO L93 Difference]: Finished difference Result 7647 states and 9513 transitions. [2022-01-11 01:48:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:59,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-11 01:48:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:59,134 INFO L225 Difference]: With dead ends: 7647 [2022-01-11 01:48:59,134 INFO L226 Difference]: Without dead ends: 4653 [2022-01-11 01:48:59,138 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 01:48:59,140 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 69 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:59,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1208 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2022-01-11 01:48:59,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4653. [2022-01-11 01:48:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 4650 states have (on average 1.230752688172043) internal successors, (5723), 4652 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states 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 01:48:59,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 5723 transitions. [2022-01-11 01:48:59,597 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 5723 transitions. Word has length 110 [2022-01-11 01:48:59,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:48:59,597 INFO L470 AbstractCegarLoop]: Abstraction has 4653 states and 5723 transitions. [2022-01-11 01:48:59,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:59,598 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 5723 transitions. [2022-01-11 01:48:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:48:59,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:48:59,600 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:59,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 01:48:59,602 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:48:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:48:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash 102468547, now seen corresponding path program 1 times [2022-01-11 01:48:59,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:48:59,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533941992] [2022-01-11 01:48:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:48:59,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:48:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:48:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 01:48:59,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:48:59,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533941992] [2022-01-11 01:48:59,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533941992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:48:59,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:48:59,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:48:59,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113534606] [2022-01-11 01:48:59,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:48:59,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:48:59,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:48:59,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:48:59,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:48:59,650 INFO L87 Difference]: Start difference. First operand 4653 states and 5723 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:48:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:48:59,892 INFO L93 Difference]: Finished difference Result 6121 states and 7520 transitions. [2022-01-11 01:48:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:48:59,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-11 01:48:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:48:59,896 INFO L225 Difference]: With dead ends: 6121 [2022-01-11 01:48:59,896 INFO L226 Difference]: Without dead ends: 3011 [2022-01-11 01:48:59,898 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 01:48:59,899 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 624 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:48:59,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 681 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:48:59,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2022-01-11 01:49:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2912. [2022-01-11 01:49:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2909 states have (on average 1.2179443107597112) internal successors, (3543), 2911 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states 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 01:49:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 3543 transitions. [2022-01-11 01:49:00,112 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 3543 transitions. Word has length 110 [2022-01-11 01:49:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:00,112 INFO L470 AbstractCegarLoop]: Abstraction has 2912 states and 3543 transitions. [2022-01-11 01:49:00,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:49:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 3543 transitions. [2022-01-11 01:49:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:49:00,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:00,114 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] [2022-01-11 01:49:00,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 01:49:00,118 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 01:49:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:00,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1649562690, now seen corresponding path program 1 times [2022-01-11 01:49:00,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:00,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055457948] [2022-01-11 01:49:00,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:00,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:00,151 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 01:49:00,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:00,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055457948] [2022-01-11 01:49:00,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055457948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:00,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:00,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:00,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135423681] [2022-01-11 01:49:00,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:00,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:00,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:00,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:00,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:00,153 INFO L87 Difference]: Start difference. First operand 2912 states and 3543 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:49:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:00,471 INFO L93 Difference]: Finished difference Result 5496 states and 6772 transitions. [2022-01-11 01:49:00,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:00,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-11 01:49:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:00,476 INFO L225 Difference]: With dead ends: 5496 [2022-01-11 01:49:00,476 INFO L226 Difference]: Without dead ends: 4181 [2022-01-11 01:49:00,477 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 01:49:00,478 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 589 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:49:00,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 1290 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:00,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2022-01-11 01:49:00,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 4065. [2022-01-11 01:49:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 4062 states have (on average 1.2200886262924668) internal successors, (4956), 4064 states have internal predecessors, (4956), 0 states have call successors, (0), 0 states 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 01:49:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 4956 transitions. [2022-01-11 01:49:00,759 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 4956 transitions. Word has length 124 [2022-01-11 01:49:00,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:00,759 INFO L470 AbstractCegarLoop]: Abstraction has 4065 states and 4956 transitions. [2022-01-11 01:49:00,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:49:00,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 4956 transitions. [2022-01-11 01:49:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:49:00,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:00,761 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] [2022-01-11 01:49:00,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 01:49:00,762 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 01:49:00,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:00,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1195236955, now seen corresponding path program 1 times [2022-01-11 01:49:00,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:00,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313087600] [2022-01-11 01:49:00,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:00,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:00,803 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 01:49:00,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:00,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313087600] [2022-01-11 01:49:00,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313087600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:00,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:00,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:00,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947168091] [2022-01-11 01:49:00,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:00,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:00,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:00,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:00,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:00,805 INFO L87 Difference]: Start difference. First operand 4065 states and 4956 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:49:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:01,092 INFO L93 Difference]: Finished difference Result 6506 states and 7999 transitions. [2022-01-11 01:49:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:01,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-11 01:49:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:01,097 INFO L225 Difference]: With dead ends: 6506 [2022-01-11 01:49:01,097 INFO L226 Difference]: Without dead ends: 4005 [2022-01-11 01:49:01,099 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 01:49:01,100 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 540 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 784 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 01:49:01,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 784 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2022-01-11 01:49:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 4005. [2022-01-11 01:49:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4005 states, 4002 states have (on average 1.2208895552223888) internal successors, (4886), 4004 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states 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 01:49:01,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 4886 transitions. [2022-01-11 01:49:01,414 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 4886 transitions. Word has length 124 [2022-01-11 01:49:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:01,415 INFO L470 AbstractCegarLoop]: Abstraction has 4005 states and 4886 transitions. [2022-01-11 01:49:01,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:49:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 4886 transitions. [2022-01-11 01:49:01,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 01:49:01,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:01,417 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] [2022-01-11 01:49:01,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 01:49:01,417 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 01:49:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1536813579, now seen corresponding path program 1 times [2022-01-11 01:49:01,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:01,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553919058] [2022-01-11 01:49:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:01,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:01,478 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 01:49:01,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:01,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553919058] [2022-01-11 01:49:01,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553919058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:01,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:01,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:01,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756188703] [2022-01-11 01:49:01,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:01,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:01,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:01,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:01,480 INFO L87 Difference]: Start difference. First operand 4005 states and 4886 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 01:49:01,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:01,935 INFO L93 Difference]: Finished difference Result 8492 states and 10461 transitions. [2022-01-11 01:49:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:01,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-11 01:49:01,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:01,943 INFO L225 Difference]: With dead ends: 8492 [2022-01-11 01:49:01,943 INFO L226 Difference]: Without dead ends: 6084 [2022-01-11 01:49:01,946 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 01:49:01,948 INFO L933 BasicCegarLoop]: 804 mSDtfsCounter, 486 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1328 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 01:49:01,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1328 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:01,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6084 states. [2022-01-11 01:49:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 6080. [2022-01-11 01:49:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6080 states, 6077 states have (on average 1.2231364159947342) internal successors, (7433), 6079 states have internal predecessors, (7433), 0 states have call successors, (0), 0 states 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 01:49:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 7433 transitions. [2022-01-11 01:49:02,373 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 7433 transitions. Word has length 125 [2022-01-11 01:49:02,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:02,373 INFO L470 AbstractCegarLoop]: Abstraction has 6080 states and 7433 transitions. [2022-01-11 01:49:02,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 01:49:02,373 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 7433 transitions. [2022-01-11 01:49:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 01:49:02,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:02,379 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] [2022-01-11 01:49:02,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 01:49:02,379 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 01:49:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1531907926, now seen corresponding path program 1 times [2022-01-11 01:49:02,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:02,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322204722] [2022-01-11 01:49:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:02,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:02,399 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 01:49:02,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:02,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322204722] [2022-01-11 01:49:02,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322204722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:02,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:02,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:02,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090993638] [2022-01-11 01:49:02,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:02,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:02,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:02,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:02,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:02,400 INFO L87 Difference]: Start difference. First operand 6080 states and 7433 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 01:49:02,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:02,848 INFO L93 Difference]: Finished difference Result 10504 states and 12919 transitions. [2022-01-11 01:49:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:02,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 125 [2022-01-11 01:49:02,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:02,856 INFO L225 Difference]: With dead ends: 10504 [2022-01-11 01:49:02,856 INFO L226 Difference]: Without dead ends: 6021 [2022-01-11 01:49:02,862 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 01:49:02,863 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 538 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 783 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 01:49:02,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 783 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:02,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6021 states. [2022-01-11 01:49:03,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6021 to 6021. [2022-01-11 01:49:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6021 states, 6018 states have (on average 1.22382851445663) internal successors, (7365), 6020 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states 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 01:49:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6021 states to 6021 states and 7365 transitions. [2022-01-11 01:49:03,334 INFO L78 Accepts]: Start accepts. Automaton has 6021 states and 7365 transitions. Word has length 125 [2022-01-11 01:49:03,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:03,334 INFO L470 AbstractCegarLoop]: Abstraction has 6021 states and 7365 transitions. [2022-01-11 01:49:03,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 01:49:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6021 states and 7365 transitions. [2022-01-11 01:49:03,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 01:49:03,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:03,338 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] [2022-01-11 01:49:03,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 01:49:03,338 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 01:49:03,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:03,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1776206345, now seen corresponding path program 1 times [2022-01-11 01:49:03,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:03,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842931221] [2022-01-11 01:49:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:03,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:03,369 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 01:49:03,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:03,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842931221] [2022-01-11 01:49:03,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842931221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:03,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:03,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:03,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816989791] [2022-01-11 01:49:03,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:03,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:03,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:03,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:03,370 INFO L87 Difference]: Start difference. First operand 6021 states and 7365 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 01:49:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:04,073 INFO L93 Difference]: Finished difference Result 14235 states and 17530 transitions. [2022-01-11 01:49:04,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:04,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-11 01:49:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:04,085 INFO L225 Difference]: With dead ends: 14235 [2022-01-11 01:49:04,086 INFO L226 Difference]: Without dead ends: 9811 [2022-01-11 01:49:04,091 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 01:49:04,091 INFO L933 BasicCegarLoop]: 754 mSDtfsCounter, 491 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1276 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 01:49:04,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1276 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9811 states. [2022-01-11 01:49:04,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9811 to 9807. [2022-01-11 01:49:04,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9807 states, 9804 states have (on average 1.2254181966544269) internal successors, (12014), 9806 states have internal predecessors, (12014), 0 states have call successors, (0), 0 states 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 01:49:04,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9807 states to 9807 states and 12014 transitions. [2022-01-11 01:49:04,803 INFO L78 Accepts]: Start accepts. Automaton has 9807 states and 12014 transitions. Word has length 126 [2022-01-11 01:49:04,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:04,804 INFO L470 AbstractCegarLoop]: Abstraction has 9807 states and 12014 transitions. [2022-01-11 01:49:04,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 01:49:04,804 INFO L276 IsEmpty]: Start isEmpty. Operand 9807 states and 12014 transitions. [2022-01-11 01:49:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 01:49:04,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:04,808 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] [2022-01-11 01:49:04,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-11 01:49:04,808 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 01:49:04,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:04,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1292515160, now seen corresponding path program 1 times [2022-01-11 01:49:04,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:04,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760139957] [2022-01-11 01:49:04,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:04,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:04,829 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 01:49:04,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:04,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760139957] [2022-01-11 01:49:04,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760139957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:04,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:04,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:04,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72494032] [2022-01-11 01:49:04,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:04,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:04,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:04,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:04,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:04,830 INFO L87 Difference]: Start difference. First operand 9807 states and 12014 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 01:49:05,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:05,503 INFO L93 Difference]: Finished difference Result 17959 states and 22084 transitions. [2022-01-11 01:49:05,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:05,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 126 [2022-01-11 01:49:05,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:05,516 INFO L225 Difference]: With dead ends: 17959 [2022-01-11 01:49:05,516 INFO L226 Difference]: Without dead ends: 9749 [2022-01-11 01:49:05,524 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 01:49:05,525 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 536 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 782 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 01:49:05,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 782 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:05,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9749 states. [2022-01-11 01:49:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9749 to 9749. [2022-01-11 01:49:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9749 states, 9746 states have (on average 1.225938846706341) internal successors, (11948), 9748 states have internal predecessors, (11948), 0 states have call successors, (0), 0 states 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 01:49:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9749 states to 9749 states and 11948 transitions. [2022-01-11 01:49:06,321 INFO L78 Accepts]: Start accepts. Automaton has 9749 states and 11948 transitions. Word has length 126 [2022-01-11 01:49:06,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:06,321 INFO L470 AbstractCegarLoop]: Abstraction has 9749 states and 11948 transitions. [2022-01-11 01:49:06,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 01:49:06,321 INFO L276 IsEmpty]: Start isEmpty. Operand 9749 states and 11948 transitions. [2022-01-11 01:49:06,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 01:49:06,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:06,325 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] [2022-01-11 01:49:06,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-11 01:49:06,325 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 01:49:06,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1683946948, now seen corresponding path program 1 times [2022-01-11 01:49:06,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:06,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971587387] [2022-01-11 01:49:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:06,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:06,356 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 01:49:06,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:06,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971587387] [2022-01-11 01:49:06,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971587387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:06,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:06,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:06,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298283766] [2022-01-11 01:49:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:06,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:06,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:06,357 INFO L87 Difference]: Start difference. First operand 9749 states and 11948 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 01:49:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:07,501 INFO L93 Difference]: Finished difference Result 24830 states and 30535 transitions. [2022-01-11 01:49:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:07,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-11 01:49:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:07,523 INFO L225 Difference]: With dead ends: 24830 [2022-01-11 01:49:07,523 INFO L226 Difference]: Without dead ends: 16678 [2022-01-11 01:49:07,533 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 01:49:07,534 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 588 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1206 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 01:49:07,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1206 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16678 states. [2022-01-11 01:49:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16678 to 16546. [2022-01-11 01:49:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16546 states, 16543 states have (on average 1.2265610832376233) internal successors, (20291), 16545 states have internal predecessors, (20291), 0 states have call successors, (0), 0 states 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 01:49:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16546 states to 16546 states and 20291 transitions. [2022-01-11 01:49:08,676 INFO L78 Accepts]: Start accepts. Automaton has 16546 states and 20291 transitions. Word has length 127 [2022-01-11 01:49:08,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:08,676 INFO L470 AbstractCegarLoop]: Abstraction has 16546 states and 20291 transitions. [2022-01-11 01:49:08,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 01:49:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 16546 states and 20291 transitions. [2022-01-11 01:49:08,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 01:49:08,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:08,683 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] [2022-01-11 01:49:08,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-11 01:49:08,683 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 01:49:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash 800596125, now seen corresponding path program 1 times [2022-01-11 01:49:08,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:08,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745153208] [2022-01-11 01:49:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:08,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:08,704 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 01:49:08,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:08,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745153208] [2022-01-11 01:49:08,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745153208] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:08,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:08,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:08,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561435251] [2022-01-11 01:49:08,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:08,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:08,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:08,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:08,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:08,706 INFO L87 Difference]: Start difference. First operand 16546 states and 20291 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 01:49:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:09,867 INFO L93 Difference]: Finished difference Result 31450 states and 38653 transitions. [2022-01-11 01:49:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:09,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 127 [2022-01-11 01:49:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:09,889 INFO L225 Difference]: With dead ends: 31450 [2022-01-11 01:49:09,889 INFO L226 Difference]: Without dead ends: 16489 [2022-01-11 01:49:09,904 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 01:49:09,904 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 534 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 781 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 01:49:09,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 781 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16489 states. [2022-01-11 01:49:11,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16489 to 16489. [2022-01-11 01:49:11,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16489 states, 16486 states have (on average 1.226919810748514) internal successors, (20227), 16488 states have internal predecessors, (20227), 0 states have call successors, (0), 0 states 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 01:49:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16489 states to 16489 states and 20227 transitions. [2022-01-11 01:49:11,174 INFO L78 Accepts]: Start accepts. Automaton has 16489 states and 20227 transitions. Word has length 127 [2022-01-11 01:49:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:11,174 INFO L470 AbstractCegarLoop]: Abstraction has 16489 states and 20227 transitions. [2022-01-11 01:49:11,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 01:49:11,174 INFO L276 IsEmpty]: Start isEmpty. Operand 16489 states and 20227 transitions. [2022-01-11 01:49:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 01:49:11,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:11,180 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] [2022-01-11 01:49:11,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-11 01:49:11,180 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 01:49:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:11,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2145616291, now seen corresponding path program 1 times [2022-01-11 01:49:11,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:11,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243045455] [2022-01-11 01:49:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:11,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:11,217 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 01:49:11,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:11,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243045455] [2022-01-11 01:49:11,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243045455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:11,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:11,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:11,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649751022] [2022-01-11 01:49:11,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:11,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:11,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:11,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:11,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:11,219 INFO L87 Difference]: Start difference. First operand 16489 states and 20227 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 01:49:13,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:13,308 INFO L93 Difference]: Finished difference Result 44634 states and 54720 transitions. [2022-01-11 01:49:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:13,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-01-11 01:49:13,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:13,346 INFO L225 Difference]: With dead ends: 44634 [2022-01-11 01:49:13,347 INFO L226 Difference]: Without dead ends: 23165 [2022-01-11 01:49:13,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 01:49:13,371 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 454 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:49:13,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 1756 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:13,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23165 states. [2022-01-11 01:49:15,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23165 to 23165. [2022-01-11 01:49:15,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23165 states, 23162 states have (on average 1.2213107676366461) internal successors, (28288), 23164 states have internal predecessors, (28288), 0 states have call successors, (0), 0 states 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 01:49:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23165 states to 23165 states and 28288 transitions. [2022-01-11 01:49:15,134 INFO L78 Accepts]: Start accepts. Automaton has 23165 states and 28288 transitions. Word has length 128 [2022-01-11 01:49:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:15,134 INFO L470 AbstractCegarLoop]: Abstraction has 23165 states and 28288 transitions. [2022-01-11 01:49:15,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 01:49:15,134 INFO L276 IsEmpty]: Start isEmpty. Operand 23165 states and 28288 transitions. [2022-01-11 01:49:15,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 01:49:15,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:15,144 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:49:15,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-11 01:49:15,145 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:49:15,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:15,145 INFO L85 PathProgramCache]: Analyzing trace with hash 589945737, now seen corresponding path program 1 times [2022-01-11 01:49:15,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:15,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772955381] [2022-01-11 01:49:15,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:15,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-11 01:49:15,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:15,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772955381] [2022-01-11 01:49:15,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772955381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:15,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:15,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:15,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038511943] [2022-01-11 01:49:15,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:15,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:15,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:15,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:15,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:15,185 INFO L87 Difference]: Start difference. First operand 23165 states and 28288 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:49:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:16,846 INFO L93 Difference]: Finished difference Result 24548 states and 29935 transitions. [2022-01-11 01:49:16,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 162 [2022-01-11 01:49:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:16,875 INFO L225 Difference]: With dead ends: 24548 [2022-01-11 01:49:16,875 INFO L226 Difference]: Without dead ends: 23134 [2022-01-11 01:49:16,884 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 01:49:16,884 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 69 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:49:16,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1327 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23134 states. [2022-01-11 01:49:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23134 to 23131. [2022-01-11 01:49:18,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23131 states, 23128 states have (on average 1.219906606710481) internal successors, (28214), 23130 states have internal predecessors, (28214), 0 states have call successors, (0), 0 states 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 01:49:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23131 states to 23131 states and 28214 transitions. [2022-01-11 01:49:18,562 INFO L78 Accepts]: Start accepts. Automaton has 23131 states and 28214 transitions. Word has length 162 [2022-01-11 01:49:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:18,563 INFO L470 AbstractCegarLoop]: Abstraction has 23131 states and 28214 transitions. [2022-01-11 01:49:18,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:49:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 23131 states and 28214 transitions. [2022-01-11 01:49:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 01:49:18,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:18,573 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:49:18,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-11 01:49:18,573 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:49:18,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1579217377, now seen corresponding path program 1 times [2022-01-11 01:49:18,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:18,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281090071] [2022-01-11 01:49:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:18,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-01-11 01:49:18,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:18,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281090071] [2022-01-11 01:49:18,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281090071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:18,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:18,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:18,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024068585] [2022-01-11 01:49:18,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:18,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:18,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:18,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:18,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:18,612 INFO L87 Difference]: Start difference. First operand 23131 states and 28214 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 01:49:20,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:20,167 INFO L93 Difference]: Finished difference Result 24198 states and 29437 transitions. [2022-01-11 01:49:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:20,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 164 [2022-01-11 01:49:20,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:20,194 INFO L225 Difference]: With dead ends: 24198 [2022-01-11 01:49:20,194 INFO L226 Difference]: Without dead ends: 22367 [2022-01-11 01:49:20,202 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 01:49:20,202 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 6 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:49:20,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1325 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22367 states. [2022-01-11 01:49:21,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22367 to 22359. [2022-01-11 01:49:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22359 states, 22356 states have (on average 1.2204777241009126) internal successors, (27285), 22358 states have internal predecessors, (27285), 0 states have call successors, (0), 0 states 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 01:49:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22359 states to 22359 states and 27285 transitions. [2022-01-11 01:49:21,831 INFO L78 Accepts]: Start accepts. Automaton has 22359 states and 27285 transitions. Word has length 164 [2022-01-11 01:49:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:21,831 INFO L470 AbstractCegarLoop]: Abstraction has 22359 states and 27285 transitions. [2022-01-11 01:49:21,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 01:49:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 22359 states and 27285 transitions. [2022-01-11 01:49:21,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 01:49:21,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:21,840 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 01:49:21,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-11 01:49:21,840 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:49:21,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:21,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1584963294, now seen corresponding path program 1 times [2022-01-11 01:49:21,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:21,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141662374] [2022-01-11 01:49:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:21,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-11 01:49:21,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:21,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141662374] [2022-01-11 01:49:21,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141662374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:21,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:21,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:21,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297075946] [2022-01-11 01:49:21,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:21,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:21,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:21,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:21,868 INFO L87 Difference]: Start difference. First operand 22359 states and 27285 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 01:49:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:23,396 INFO L93 Difference]: Finished difference Result 22362 states and 27288 transitions. [2022-01-11 01:49:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:23,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 164 [2022-01-11 01:49:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:23,418 INFO L225 Difference]: With dead ends: 22362 [2022-01-11 01:49:23,418 INFO L226 Difference]: Without dead ends: 21635 [2022-01-11 01:49:23,422 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 01:49:23,422 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 541 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:49:23,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 707 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:23,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21635 states. [2022-01-11 01:49:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21635 to 21635. [2022-01-11 01:49:24,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21635 states, 21633 states have (on average 1.2242869689825728) internal successors, (26485), 21634 states have internal predecessors, (26485), 0 states have call successors, (0), 0 states 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 01:49:24,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21635 states to 21635 states and 26485 transitions. [2022-01-11 01:49:24,943 INFO L78 Accepts]: Start accepts. Automaton has 21635 states and 26485 transitions. Word has length 164 [2022-01-11 01:49:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:24,943 INFO L470 AbstractCegarLoop]: Abstraction has 21635 states and 26485 transitions. [2022-01-11 01:49:24,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 01:49:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 21635 states and 26485 transitions. [2022-01-11 01:49:24,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:49:24,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:24,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:49:24,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-11 01:49:24,952 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:49:24,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:24,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1901301188, now seen corresponding path program 1 times [2022-01-11 01:49:24,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:24,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543571420] [2022-01-11 01:49:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:24,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:25,012 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 01:49:25,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:25,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543571420] [2022-01-11 01:49:25,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543571420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:25,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:25,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:49:25,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653756718] [2022-01-11 01:49:25,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:25,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:25,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:25,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:25,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:25,014 INFO L87 Difference]: Start difference. First operand 21635 states and 26485 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:49:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:27,040 INFO L93 Difference]: Finished difference Result 49799 states and 60858 transitions. [2022-01-11 01:49:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:27,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:49:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:27,075 INFO L225 Difference]: With dead ends: 49799 [2022-01-11 01:49:27,076 INFO L226 Difference]: Without dead ends: 28214 [2022-01-11 01:49:27,098 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 01:49:27,098 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 337 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:49:27,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 982 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28214 states. [2022-01-11 01:49:29,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28214 to 28118. [2022-01-11 01:49:29,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28118 states, 28116 states have (on average 1.2159268743775786) internal successors, (34187), 28117 states have internal predecessors, (34187), 0 states have call successors, (0), 0 states 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 01:49:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28118 states to 28118 states and 34187 transitions. [2022-01-11 01:49:29,186 INFO L78 Accepts]: Start accepts. Automaton has 28118 states and 34187 transitions. Word has length 165 [2022-01-11 01:49:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:29,186 INFO L470 AbstractCegarLoop]: Abstraction has 28118 states and 34187 transitions. [2022-01-11 01:49:29,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:49:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 28118 states and 34187 transitions. [2022-01-11 01:49:29,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-11 01:49:29,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:29,197 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:29,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-11 01:49:29,197 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:49:29,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1399607241, now seen corresponding path program 1 times [2022-01-11 01:49:29,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:29,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263301660] [2022-01-11 01:49:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:29,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-11 01:49:29,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:29,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263301660] [2022-01-11 01:49:29,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263301660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:29,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:29,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:29,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420308899] [2022-01-11 01:49:29,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:29,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:29,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:29,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:29,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:29,240 INFO L87 Difference]: Start difference. First operand 28118 states and 34187 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:49:31,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:31,485 INFO L93 Difference]: Finished difference Result 55720 states and 67631 transitions. [2022-01-11 01:49:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:31,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 184 [2022-01-11 01:49:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:31,527 INFO L225 Difference]: With dead ends: 55720 [2022-01-11 01:49:31,527 INFO L226 Difference]: Without dead ends: 27668 [2022-01-11 01:49:31,550 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 01:49:31,551 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 378 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:49:31,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 1007 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27668 states. [2022-01-11 01:49:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27668 to 27668. [2022-01-11 01:49:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27668 states, 27666 states have (on average 1.1998481891129906) internal successors, (33195), 27667 states have internal predecessors, (33195), 0 states have call successors, (0), 0 states 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 01:49:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27668 states to 27668 states and 33195 transitions. [2022-01-11 01:49:33,627 INFO L78 Accepts]: Start accepts. Automaton has 27668 states and 33195 transitions. Word has length 184 [2022-01-11 01:49:33,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:33,628 INFO L470 AbstractCegarLoop]: Abstraction has 27668 states and 33195 transitions. [2022-01-11 01:49:33,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:49:33,628 INFO L276 IsEmpty]: Start isEmpty. Operand 27668 states and 33195 transitions. [2022-01-11 01:49:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-11 01:49:33,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:33,639 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:33,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-11 01:49:33,640 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:49:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1038116484, now seen corresponding path program 1 times [2022-01-11 01:49:33,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:33,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503195057] [2022-01-11 01:49:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:33,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:49:33,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:33,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503195057] [2022-01-11 01:49:33,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503195057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:33,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:33,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:33,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655796529] [2022-01-11 01:49:33,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:33,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:33,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:33,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:33,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:33,674 INFO L87 Difference]: Start difference. First operand 27668 states and 33195 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 01:49:35,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:35,801 INFO L93 Difference]: Finished difference Result 48880 states and 58813 transitions. [2022-01-11 01:49:35,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:35,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2022-01-11 01:49:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:35,848 INFO L225 Difference]: With dead ends: 48880 [2022-01-11 01:49:35,849 INFO L226 Difference]: Without dead ends: 27672 [2022-01-11 01:49:35,865 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 01:49:35,866 INFO L933 BasicCegarLoop]: 912 mSDtfsCounter, 390 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:49:35,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 1431 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27672 states. [2022-01-11 01:49:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27672 to 27668. [2022-01-11 01:49:38,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27668 states, 27666 states have (on average 1.1978963348514422) internal successors, (33141), 27667 states have internal predecessors, (33141), 0 states have call successors, (0), 0 states 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 01:49:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27668 states to 27668 states and 33141 transitions. [2022-01-11 01:49:38,062 INFO L78 Accepts]: Start accepts. Automaton has 27668 states and 33141 transitions. Word has length 185 [2022-01-11 01:49:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:38,063 INFO L470 AbstractCegarLoop]: Abstraction has 27668 states and 33141 transitions. [2022-01-11 01:49:38,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 01:49:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 27668 states and 33141 transitions. [2022-01-11 01:49:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-11 01:49:38,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:38,074 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:38,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-11 01:49:38,074 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:49:38,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:38,075 INFO L85 PathProgramCache]: Analyzing trace with hash 600388788, now seen corresponding path program 1 times [2022-01-11 01:49:38,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:38,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389831905] [2022-01-11 01:49:38,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:38,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:49:38,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:38,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389831905] [2022-01-11 01:49:38,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389831905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:38,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:38,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:49:38,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517122555] [2022-01-11 01:49:38,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:38,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:49:38,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:38,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:49:38,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:49:38,121 INFO L87 Difference]: Start difference. First operand 27668 states and 33141 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 01:49:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:40,329 INFO L93 Difference]: Finished difference Result 48940 states and 58767 transitions. [2022-01-11 01:49:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:49:40,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2022-01-11 01:49:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:40,480 INFO L225 Difference]: With dead ends: 48940 [2022-01-11 01:49:40,480 INFO L226 Difference]: Without dead ends: 27732 [2022-01-11 01:49:40,495 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 01:49:40,495 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 423 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:49:40,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 1349 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:49:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27732 states. [2022-01-11 01:49:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27732 to 27668. [2022-01-11 01:49:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27668 states, 27666 states have (on average 1.1811248463818405) internal successors, (32677), 27667 states have internal predecessors, (32677), 0 states have call successors, (0), 0 states 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 01:49:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27668 states to 27668 states and 32677 transitions. [2022-01-11 01:49:42,587 INFO L78 Accepts]: Start accepts. Automaton has 27668 states and 32677 transitions. Word has length 185 [2022-01-11 01:49:42,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:42,587 INFO L470 AbstractCegarLoop]: Abstraction has 27668 states and 32677 transitions. [2022-01-11 01:49:42,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 01:49:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 27668 states and 32677 transitions. [2022-01-11 01:49:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-11 01:49:42,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:42,600 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:42,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-11 01:49:42,600 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:49:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:42,600 INFO L85 PathProgramCache]: Analyzing trace with hash -555463579, now seen corresponding path program 1 times [2022-01-11 01:49:42,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:42,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763846159] [2022-01-11 01:49:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:42,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-11 01:49:42,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:42,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763846159] [2022-01-11 01:49:42,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763846159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:42,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:42,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:49:42,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837421494] [2022-01-11 01:49:42,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:42,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:49:42,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:42,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:49:42,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:49:42,647 INFO L87 Difference]: Start difference. First operand 27668 states and 32677 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:49:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:49:45,581 INFO L93 Difference]: Finished difference Result 61946 states and 73262 transitions. [2022-01-11 01:49:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:49:45,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 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 187 [2022-01-11 01:49:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:49:45,626 INFO L225 Difference]: With dead ends: 61946 [2022-01-11 01:49:45,626 INFO L226 Difference]: Without dead ends: 34312 [2022-01-11 01:49:45,650 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 01:49:45,650 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 1404 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:49:45,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1404 Valid, 1333 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:49:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34312 states. [2022-01-11 01:49:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34312 to 27812. [2022-01-11 01:49:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27812 states, 27810 states have (on average 1.1646170442286947) internal successors, (32388), 27811 states have internal predecessors, (32388), 0 states have call successors, (0), 0 states 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 01:49:48,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27812 states to 27812 states and 32388 transitions. [2022-01-11 01:49:48,294 INFO L78 Accepts]: Start accepts. Automaton has 27812 states and 32388 transitions. Word has length 187 [2022-01-11 01:49:48,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:49:48,295 INFO L470 AbstractCegarLoop]: Abstraction has 27812 states and 32388 transitions. [2022-01-11 01:49:48,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:49:48,295 INFO L276 IsEmpty]: Start isEmpty. Operand 27812 states and 32388 transitions. [2022-01-11 01:49:48,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-11 01:49:48,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:49:48,307 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:48,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-11 01:49:48,307 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:49:48,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:49:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1639352664, now seen corresponding path program 1 times [2022-01-11 01:49:48,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:49:48,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632402981] [2022-01-11 01:49:48,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:49:48,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:49:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:49:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-11 01:49:48,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:49:48,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632402981] [2022-01-11 01:49:48,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632402981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:49:48,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:49:48,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:49:48,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724280525] [2022-01-11 01:49:48,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:49:48,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:49:48,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:49:48,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:49:48,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:49:48,349 INFO L87 Difference]: Start difference. First operand 27812 states and 32388 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)