/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:05:25,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:05:25,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:05:25,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:05:25,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:05:25,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:05:25,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:05:25,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:05:25,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:05:25,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:05:25,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:05:25,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:05:25,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:05:25,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:05:25,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:05:25,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:05:25,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:05:25,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:05:25,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:05:25,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:05:25,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:05:25,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:05:25,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:05:25,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:05:25,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:05:25,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:05:25,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:05:25,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:05:25,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:05:25,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 07:05:25,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 07:05:25,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 07:05:25,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 07:05:25,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 07:05:25,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 07:05:25,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 07:05:25,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 07:05:25,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 07:05:25,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:05:25,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:05:25,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:05:25,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 07:05:25,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:05:25,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:05:25,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:05:25,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:05:25,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:05:25,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:05:25,250 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:05:25,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:05:25,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:05:25,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:05:25,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:05:25,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:05:25,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:05:25,251 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:05:25,251 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:05:25,251 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:05:25,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:05:25,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:05:25,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:05:25,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:05:25,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:05:25,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:05:25,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:05:25,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:05:25,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:05:25,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:05:25,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:05:25,253 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:05:25,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:05:25,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:05:25,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:05:25,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:05:25,254 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:05:25,255 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:05:25,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:05:25,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:05:25,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:05:25,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:05:25,506 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:05:25,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-1.c [2022-01-11 07:05:25,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/680f7692f/a0a3312e961143108665acf04d475007/FLAG64e558ced [2022-01-11 07:05:26,340 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:05:26,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-1.c [2022-01-11 07:05:26,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/680f7692f/a0a3312e961143108665acf04d475007/FLAG64e558ced [2022-01-11 07:05:26,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/680f7692f/a0a3312e961143108665acf04d475007 [2022-01-11 07:05:26,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:05:26,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:05:26,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:05:26,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:05:26,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:05:26,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:05:26" (1/1) ... [2022-01-11 07:05:26,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b19ccac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:26, skipping insertion in model container [2022-01-11 07:05:26,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:05:26" (1/1) ... [2022-01-11 07:05:26,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:05:27,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:05:28,648 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/Problem05_label43+token_ring.09.cil-1.c[381679,381692] [2022-01-11 07:05:28,670 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/Problem05_label43+token_ring.09.cil-1.c[383339,383352] [2022-01-11 07:05:28,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:05:28,937 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:05:29,687 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/Problem05_label43+token_ring.09.cil-1.c[381679,381692] [2022-01-11 07:05:29,692 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/Problem05_label43+token_ring.09.cil-1.c[383339,383352] [2022-01-11 07:05:29,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:05:29,779 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:05:29,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29 WrapperNode [2022-01-11 07:05:29,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:05:29,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:05:29,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:05:29,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:05:29,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29" (1/1) ... [2022-01-11 07:05:29,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29" (1/1) ... [2022-01-11 07:05:30,264 INFO L137 Inliner]: procedures = 63, calls = 68, calls flagged for inlining = 63, calls inlined = 192, statements flattened = 15092 [2022-01-11 07:05:30,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:05:30,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:05:30,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:05:30,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:05:30,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29" (1/1) ... [2022-01-11 07:05:30,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29" (1/1) ... [2022-01-11 07:05:30,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29" (1/1) ... [2022-01-11 07:05:30,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29" (1/1) ... [2022-01-11 07:05:30,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29" (1/1) ... [2022-01-11 07:05:30,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29" (1/1) ... [2022-01-11 07:05:30,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29" (1/1) ... [2022-01-11 07:05:30,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:05:30,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:05:30,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:05:30,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:05:30,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29" (1/1) ... [2022-01-11 07:05:30,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:05:30,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:05:30,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 07:05:30,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 07:05:30,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:05:30,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:05:30,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:05:30,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:05:31,056 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:05:31,057 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:05:39,961 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:05:39,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:05:39,987 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-11 07:05:39,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:05:39 BoogieIcfgContainer [2022-01-11 07:05:39,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:05:39,994 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:05:39,994 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:05:39,996 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:05:39,998 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:05:39" (1/1) ... [2022-01-11 07:05:41,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:05:41 BasicIcfg [2022-01-11 07:05:41,725 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:05:41,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:05:41,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:05:41,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:05:41,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:05:26" (1/4) ... [2022-01-11 07:05:41,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a389d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:05:41, skipping insertion in model container [2022-01-11 07:05:41,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:05:29" (2/4) ... [2022-01-11 07:05:41,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a389d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:05:41, skipping insertion in model container [2022-01-11 07:05:41,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:05:39" (3/4) ... [2022-01-11 07:05:41,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a389d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:05:41, skipping insertion in model container [2022-01-11 07:05:41,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:05:41" (4/4) ... [2022-01-11 07:05:41,733 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-1.cTransformedIcfg [2022-01-11 07:05:41,742 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:05:41,742 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 07:05:41,805 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:05:41,811 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 07:05:41,814 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 07:05:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 3360 states, 3357 states have (on average 1.7453083109919572) internal successors, (5859), 3359 states have internal predecessors, (5859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:41,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:41,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:41,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:41,893 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:41,902 INFO L85 PathProgramCache]: Analyzing trace with hash 624402874, now seen corresponding path program 1 times [2022-01-11 07:05:41,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:41,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780782587] [2022-01-11 07:05:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:41,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:42,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:42,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780782587] [2022-01-11 07:05:42,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780782587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:42,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:42,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:42,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206082805] [2022-01-11 07:05:42,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:42,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:42,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:42,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:42,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:42,353 INFO L87 Difference]: Start difference. First operand has 3360 states, 3357 states have (on average 1.7453083109919572) internal successors, (5859), 3359 states have internal predecessors, (5859), 0 states have call successors, (0), 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 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:42,730 INFO L93 Difference]: Finished difference Result 7680 states and 13153 transitions. [2022-01-11 07:05:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:42,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:42,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:42,773 INFO L225 Difference]: With dead ends: 7680 [2022-01-11 07:05:42,773 INFO L226 Difference]: Without dead ends: 4266 [2022-01-11 07:05:42,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:42,788 INFO L933 BasicCegarLoop]: 5764 mSDtfsCounter, 5646 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5646 SdHoareTripleChecker+Valid, 7300 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:42,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5646 Valid, 7300 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:42,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2022-01-11 07:05:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 4264. [2022-01-11 07:05:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6736274049741906) internal successors, (7133), 4263 states have internal predecessors, (7133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7133 transitions. [2022-01-11 07:05:42,987 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7133 transitions. Word has length 132 [2022-01-11 07:05:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:42,987 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7133 transitions. [2022-01-11 07:05:42,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7133 transitions. [2022-01-11 07:05:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:42,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:42,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:42,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:05:43,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:43,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 36078554, now seen corresponding path program 1 times [2022-01-11 07:05:43,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:43,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979028178] [2022-01-11 07:05:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:43,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:43,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:43,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979028178] [2022-01-11 07:05:43,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979028178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:43,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:43,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:43,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583635725] [2022-01-11 07:05:43,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:43,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:43,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:43,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:43,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:43,128 INFO L87 Difference]: Start difference. First operand 4264 states and 7133 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:43,236 INFO L93 Difference]: Finished difference Result 6390 states and 10280 transitions. [2022-01-11 07:05:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:43,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:43,255 INFO L225 Difference]: With dead ends: 6390 [2022-01-11 07:05:43,256 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:43,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:43,265 INFO L933 BasicCegarLoop]: 5691 mSDtfsCounter, 5679 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5679 SdHoareTripleChecker+Valid, 5691 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:43,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5679 Valid, 5691 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:43,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6717503519474426) internal successors, (7125), 4263 states have internal predecessors, (7125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7125 transitions. [2022-01-11 07:05:43,399 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7125 transitions. Word has length 132 [2022-01-11 07:05:43,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:43,401 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7125 transitions. [2022-01-11 07:05:43,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:43,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7125 transitions. [2022-01-11 07:05:43,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:43,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:43,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:43,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:05:43,412 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:43,413 INFO L85 PathProgramCache]: Analyzing trace with hash -121446982, now seen corresponding path program 1 times [2022-01-11 07:05:43,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:43,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776308139] [2022-01-11 07:05:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:43,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:43,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:43,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776308139] [2022-01-11 07:05:43,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776308139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:43,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:43,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:43,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972252322] [2022-01-11 07:05:43,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:43,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:43,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:43,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:43,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:43,540 INFO L87 Difference]: Start difference. First operand 4264 states and 7125 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:43,653 INFO L93 Difference]: Finished difference Result 6389 states and 10263 transitions. [2022-01-11 07:05:43,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:43,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:43,670 INFO L225 Difference]: With dead ends: 6389 [2022-01-11 07:05:43,671 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:43,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:43,682 INFO L933 BasicCegarLoop]: 5686 mSDtfsCounter, 5673 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5673 SdHoareTripleChecker+Valid, 5686 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:43,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5673 Valid, 5686 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:43,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6698732989206946) internal successors, (7117), 4263 states have internal predecessors, (7117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7117 transitions. [2022-01-11 07:05:43,931 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7117 transitions. Word has length 132 [2022-01-11 07:05:43,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:43,931 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7117 transitions. [2022-01-11 07:05:43,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7117 transitions. [2022-01-11 07:05:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:43,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:43,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:43,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:05:43,936 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:43,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:43,937 INFO L85 PathProgramCache]: Analyzing trace with hash 843302874, now seen corresponding path program 1 times [2022-01-11 07:05:43,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:43,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501565917] [2022-01-11 07:05:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:43,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:44,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:44,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:44,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501565917] [2022-01-11 07:05:44,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501565917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:44,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:44,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:44,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023620049] [2022-01-11 07:05:44,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:44,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:44,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:44,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:44,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:44,026 INFO L87 Difference]: Start difference. First operand 4264 states and 7117 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:44,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:44,166 INFO L93 Difference]: Finished difference Result 6388 states and 10246 transitions. [2022-01-11 07:05:44,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:44,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:44,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:44,185 INFO L225 Difference]: With dead ends: 6388 [2022-01-11 07:05:44,186 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:44,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:44,199 INFO L933 BasicCegarLoop]: 5681 mSDtfsCounter, 5667 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5667 SdHoareTripleChecker+Valid, 5681 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:44,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5667 Valid, 5681 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:44,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:44,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6679962458939466) internal successors, (7109), 4263 states have internal predecessors, (7109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7109 transitions. [2022-01-11 07:05:44,341 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7109 transitions. Word has length 132 [2022-01-11 07:05:44,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:44,341 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7109 transitions. [2022-01-11 07:05:44,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7109 transitions. [2022-01-11 07:05:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:44,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:44,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:44,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:05:44,344 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:44,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1844255162, now seen corresponding path program 1 times [2022-01-11 07:05:44,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:44,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511388588] [2022-01-11 07:05:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:44,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:44,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:44,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511388588] [2022-01-11 07:05:44,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511388588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:44,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:44,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:44,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937649742] [2022-01-11 07:05:44,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:44,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:44,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:44,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:44,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:44,423 INFO L87 Difference]: Start difference. First operand 4264 states and 7109 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:44,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:44,550 INFO L93 Difference]: Finished difference Result 6387 states and 10229 transitions. [2022-01-11 07:05:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:44,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:44,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:44,568 INFO L225 Difference]: With dead ends: 6387 [2022-01-11 07:05:44,568 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:44,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:44,575 INFO L933 BasicCegarLoop]: 5676 mSDtfsCounter, 5661 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5661 SdHoareTripleChecker+Valid, 5676 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:44,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5661 Valid, 5676 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:44,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6661191928671986) internal successors, (7101), 4263 states have internal predecessors, (7101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7101 transitions. [2022-01-11 07:05:44,688 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7101 transitions. Word has length 132 [2022-01-11 07:05:44,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:44,691 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7101 transitions. [2022-01-11 07:05:44,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7101 transitions. [2022-01-11 07:05:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:44,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:44,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:44,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:05:44,694 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:44,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1864234022, now seen corresponding path program 1 times [2022-01-11 07:05:44,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:44,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329502531] [2022-01-11 07:05:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:44,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:44,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:44,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329502531] [2022-01-11 07:05:44,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329502531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:44,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:44,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:44,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435542689] [2022-01-11 07:05:44,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:44,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:44,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:44,759 INFO L87 Difference]: Start difference. First operand 4264 states and 7101 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:44,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:44,881 INFO L93 Difference]: Finished difference Result 6386 states and 10212 transitions. [2022-01-11 07:05:44,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:44,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:44,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:44,913 INFO L225 Difference]: With dead ends: 6386 [2022-01-11 07:05:44,913 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:44,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:44,925 INFO L933 BasicCegarLoop]: 5671 mSDtfsCounter, 5655 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5655 SdHoareTripleChecker+Valid, 5671 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:44,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5655 Valid, 5671 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:44,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6642421398404506) internal successors, (7093), 4263 states have internal predecessors, (7093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7093 transitions. [2022-01-11 07:05:45,057 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7093 transitions. Word has length 132 [2022-01-11 07:05:45,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:45,057 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7093 transitions. [2022-01-11 07:05:45,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:45,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7093 transitions. [2022-01-11 07:05:45,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:45,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:45,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:45,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:05:45,059 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:45,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1618367930, now seen corresponding path program 1 times [2022-01-11 07:05:45,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:45,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711182416] [2022-01-11 07:05:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:45,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:45,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:45,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711182416] [2022-01-11 07:05:45,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711182416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:45,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:45,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:45,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112208709] [2022-01-11 07:05:45,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:45,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:45,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:45,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:45,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:45,140 INFO L87 Difference]: Start difference. First operand 4264 states and 7093 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:45,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:45,367 INFO L93 Difference]: Finished difference Result 6385 states and 10195 transitions. [2022-01-11 07:05:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:45,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:45,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:45,376 INFO L225 Difference]: With dead ends: 6385 [2022-01-11 07:05:45,377 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:45,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:45,383 INFO L933 BasicCegarLoop]: 5666 mSDtfsCounter, 5649 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5649 SdHoareTripleChecker+Valid, 5666 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:45,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5649 Valid, 5666 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:45,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:45,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6623650868137025) internal successors, (7085), 4263 states have internal predecessors, (7085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7085 transitions. [2022-01-11 07:05:45,541 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7085 transitions. Word has length 132 [2022-01-11 07:05:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:45,543 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7085 transitions. [2022-01-11 07:05:45,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7085 transitions. [2022-01-11 07:05:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:45,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:45,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:45,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:05:45,545 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:45,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:45,546 INFO L85 PathProgramCache]: Analyzing trace with hash -901689382, now seen corresponding path program 1 times [2022-01-11 07:05:45,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:45,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563325095] [2022-01-11 07:05:45,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:45,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:45,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:45,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563325095] [2022-01-11 07:05:45,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563325095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:45,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:45,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:45,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823128492] [2022-01-11 07:05:45,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:45,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:45,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:45,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:45,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:45,600 INFO L87 Difference]: Start difference. First operand 4264 states and 7085 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:45,747 INFO L93 Difference]: Finished difference Result 6384 states and 10178 transitions. [2022-01-11 07:05:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:45,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:45,756 INFO L225 Difference]: With dead ends: 6384 [2022-01-11 07:05:45,756 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:45,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:45,761 INFO L933 BasicCegarLoop]: 5661 mSDtfsCounter, 5643 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5643 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:45,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5643 Valid, 5661 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:45,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6604880337869545) internal successors, (7077), 4263 states have internal predecessors, (7077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7077 transitions. [2022-01-11 07:05:45,924 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7077 transitions. Word has length 132 [2022-01-11 07:05:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:45,926 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7077 transitions. [2022-01-11 07:05:45,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7077 transitions. [2022-01-11 07:05:45,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:45,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:45,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:45,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:05:45,929 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1675718214, now seen corresponding path program 1 times [2022-01-11 07:05:45,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:45,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292965227] [2022-01-11 07:05:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:45,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:45,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:45,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:45,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292965227] [2022-01-11 07:05:45,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292965227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:45,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:45,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:45,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043971893] [2022-01-11 07:05:45,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:45,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:45,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:45,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:45,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:45,982 INFO L87 Difference]: Start difference. First operand 4264 states and 7077 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:46,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:46,138 INFO L93 Difference]: Finished difference Result 6383 states and 10161 transitions. [2022-01-11 07:05:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:46,149 INFO L225 Difference]: With dead ends: 6383 [2022-01-11 07:05:46,149 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:46,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:46,158 INFO L933 BasicCegarLoop]: 5656 mSDtfsCounter, 5637 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5637 SdHoareTripleChecker+Valid, 5656 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:46,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5637 Valid, 5656 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:46,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6586109807602065) internal successors, (7069), 4263 states have internal predecessors, (7069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7069 transitions. [2022-01-11 07:05:46,314 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7069 transitions. Word has length 132 [2022-01-11 07:05:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:46,315 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7069 transitions. [2022-01-11 07:05:46,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7069 transitions. [2022-01-11 07:05:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:46,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:46,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:46,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:05:46,320 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1700686886, now seen corresponding path program 1 times [2022-01-11 07:05:46,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:46,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786225118] [2022-01-11 07:05:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:46,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:46,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:46,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786225118] [2022-01-11 07:05:46,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786225118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:46,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:46,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:46,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775679513] [2022-01-11 07:05:46,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:46,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:46,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:46,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:46,374 INFO L87 Difference]: Start difference. First operand 4264 states and 7069 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:46,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:46,519 INFO L93 Difference]: Finished difference Result 6382 states and 10144 transitions. [2022-01-11 07:05:46,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:46,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:46,529 INFO L225 Difference]: With dead ends: 6382 [2022-01-11 07:05:46,529 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:46,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:46,534 INFO L933 BasicCegarLoop]: 5651 mSDtfsCounter, 5631 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5631 SdHoareTripleChecker+Valid, 5651 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:46,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5631 Valid, 5651 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:46,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6567339277334585) internal successors, (7061), 4263 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7061 transitions. [2022-01-11 07:05:46,662 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7061 transitions. Word has length 132 [2022-01-11 07:05:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:46,662 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7061 transitions. [2022-01-11 07:05:46,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7061 transitions. [2022-01-11 07:05:46,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:46,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:46,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:46,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:05:46,665 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:46,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:46,665 INFO L85 PathProgramCache]: Analyzing trace with hash -593113670, now seen corresponding path program 1 times [2022-01-11 07:05:46,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:46,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243814959] [2022-01-11 07:05:46,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:46,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:46,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:46,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243814959] [2022-01-11 07:05:46,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243814959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:46,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:46,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:46,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672982969] [2022-01-11 07:05:46,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:46,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:46,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:46,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:46,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:46,714 INFO L87 Difference]: Start difference. First operand 4264 states and 7061 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:46,866 INFO L93 Difference]: Finished difference Result 6381 states and 10127 transitions. [2022-01-11 07:05:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:46,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:46,877 INFO L225 Difference]: With dead ends: 6381 [2022-01-11 07:05:46,878 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:46,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:46,885 INFO L933 BasicCegarLoop]: 5622 mSDtfsCounter, 5511 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5511 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:46,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5511 Valid, 5720 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6496949788831534) internal successors, (7031), 4263 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7031 transitions. [2022-01-11 07:05:47,042 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7031 transitions. Word has length 132 [2022-01-11 07:05:47,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:47,042 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7031 transitions. [2022-01-11 07:05:47,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:47,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7031 transitions. [2022-01-11 07:05:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:47,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:47,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:47,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:05:47,044 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:47,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:47,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1777762471, now seen corresponding path program 1 times [2022-01-11 07:05:47,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:47,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165522944] [2022-01-11 07:05:47,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:47,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:47,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:47,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165522944] [2022-01-11 07:05:47,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165522944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:47,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:47,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:47,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769396087] [2022-01-11 07:05:47,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:47,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:47,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:47,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:47,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:47,104 INFO L87 Difference]: Start difference. First operand 4264 states and 7031 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:47,245 INFO L93 Difference]: Finished difference Result 6380 states and 10066 transitions. [2022-01-11 07:05:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:47,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:47,257 INFO L225 Difference]: With dead ends: 6380 [2022-01-11 07:05:47,258 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:47,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:47,264 INFO L933 BasicCegarLoop]: 5605 mSDtfsCounter, 5494 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5494 SdHoareTripleChecker+Valid, 5702 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:47,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5494 Valid, 5702 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:47,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:47,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:47,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6426560300328483) internal successors, (7001), 4263 states have internal predecessors, (7001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7001 transitions. [2022-01-11 07:05:47,407 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7001 transitions. Word has length 132 [2022-01-11 07:05:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:47,408 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 7001 transitions. [2022-01-11 07:05:47,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:47,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7001 transitions. [2022-01-11 07:05:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:47,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:47,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:47,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:05:47,411 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:47,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:47,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1129358328, now seen corresponding path program 1 times [2022-01-11 07:05:47,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:47,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835009054] [2022-01-11 07:05:47,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:47,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:47,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:47,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835009054] [2022-01-11 07:05:47,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835009054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:47,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:47,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:47,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934151740] [2022-01-11 07:05:47,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:47,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:47,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:47,461 INFO L87 Difference]: Start difference. First operand 4264 states and 7001 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:47,634 INFO L93 Difference]: Finished difference Result 6378 states and 10003 transitions. [2022-01-11 07:05:47,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:47,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:47,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:47,644 INFO L225 Difference]: With dead ends: 6378 [2022-01-11 07:05:47,645 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:47,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:47,654 INFO L933 BasicCegarLoop]: 5588 mSDtfsCounter, 5476 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5476 SdHoareTripleChecker+Valid, 5684 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:47,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5476 Valid, 5684 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6356170811825435) internal successors, (6971), 4263 states have internal predecessors, (6971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6971 transitions. [2022-01-11 07:05:47,835 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6971 transitions. Word has length 132 [2022-01-11 07:05:47,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:47,836 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6971 transitions. [2022-01-11 07:05:47,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6971 transitions. [2022-01-11 07:05:47,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:47,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:47,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:47,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:05:47,838 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:47,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:47,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1841715433, now seen corresponding path program 1 times [2022-01-11 07:05:47,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:47,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190534611] [2022-01-11 07:05:47,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:47,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:47,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:47,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190534611] [2022-01-11 07:05:47,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190534611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:47,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:47,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:47,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600442528] [2022-01-11 07:05:47,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:47,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:47,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:47,914 INFO L87 Difference]: Start difference. First operand 4264 states and 6971 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:48,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:48,068 INFO L93 Difference]: Finished difference Result 6377 states and 9942 transitions. [2022-01-11 07:05:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:48,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:48,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:48,079 INFO L225 Difference]: With dead ends: 6377 [2022-01-11 07:05:48,080 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:48,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:48,086 INFO L933 BasicCegarLoop]: 5571 mSDtfsCounter, 5459 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5459 SdHoareTripleChecker+Valid, 5666 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:48,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5459 Valid, 5666 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:48,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:48,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6285781323322384) internal successors, (6941), 4263 states have internal predecessors, (6941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6941 transitions. [2022-01-11 07:05:48,232 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6941 transitions. Word has length 132 [2022-01-11 07:05:48,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:48,232 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6941 transitions. [2022-01-11 07:05:48,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6941 transitions. [2022-01-11 07:05:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:48,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:48,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:48,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:05:48,234 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:48,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:48,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1138936394, now seen corresponding path program 1 times [2022-01-11 07:05:48,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:48,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748388857] [2022-01-11 07:05:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:48,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:48,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:48,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748388857] [2022-01-11 07:05:48,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748388857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:48,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:48,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:48,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063298555] [2022-01-11 07:05:48,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:48,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:48,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:48,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:48,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:48,280 INFO L87 Difference]: Start difference. First operand 4264 states and 6941 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:48,440 INFO L93 Difference]: Finished difference Result 6376 states and 9881 transitions. [2022-01-11 07:05:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:48,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:48,450 INFO L225 Difference]: With dead ends: 6376 [2022-01-11 07:05:48,450 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:48,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:48,456 INFO L933 BasicCegarLoop]: 5554 mSDtfsCounter, 5442 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5442 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:48,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5442 Valid, 5648 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6215391834819333) internal successors, (6911), 4263 states have internal predecessors, (6911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6911 transitions. [2022-01-11 07:05:48,602 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6911 transitions. Word has length 132 [2022-01-11 07:05:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:48,602 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6911 transitions. [2022-01-11 07:05:48,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6911 transitions. [2022-01-11 07:05:48,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:48,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:48,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:48,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:05:48,604 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:48,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1196152661, now seen corresponding path program 1 times [2022-01-11 07:05:48,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:48,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833740005] [2022-01-11 07:05:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:48,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:48,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:48,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833740005] [2022-01-11 07:05:48,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833740005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:48,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:48,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:48,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412836106] [2022-01-11 07:05:48,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:48,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:48,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:48,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:48,648 INFO L87 Difference]: Start difference. First operand 4264 states and 6911 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:48,811 INFO L93 Difference]: Finished difference Result 6374 states and 9818 transitions. [2022-01-11 07:05:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:48,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:48,821 INFO L225 Difference]: With dead ends: 6374 [2022-01-11 07:05:48,821 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:48,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:48,826 INFO L933 BasicCegarLoop]: 5537 mSDtfsCounter, 5424 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5424 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:48,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5424 Valid, 5630 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6145002346316284) internal successors, (6881), 4263 states have internal predecessors, (6881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6881 transitions. [2022-01-11 07:05:48,982 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6881 transitions. Word has length 132 [2022-01-11 07:05:48,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:48,982 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6881 transitions. [2022-01-11 07:05:48,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6881 transitions. [2022-01-11 07:05:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:48,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:48,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:48,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:05:48,985 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:48,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:48,985 INFO L85 PathProgramCache]: Analyzing trace with hash 327407476, now seen corresponding path program 1 times [2022-01-11 07:05:48,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:48,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514374808] [2022-01-11 07:05:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:48,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:49,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:49,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514374808] [2022-01-11 07:05:49,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514374808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:49,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:49,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:49,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593524939] [2022-01-11 07:05:49,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:49,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:49,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:49,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:49,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:49,029 INFO L87 Difference]: Start difference. First operand 4264 states and 6881 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:49,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:49,204 INFO L93 Difference]: Finished difference Result 6373 states and 9757 transitions. [2022-01-11 07:05:49,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:49,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:49,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:49,212 INFO L225 Difference]: With dead ends: 6373 [2022-01-11 07:05:49,213 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:49,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:49,217 INFO L933 BasicCegarLoop]: 5520 mSDtfsCounter, 5407 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5407 SdHoareTripleChecker+Valid, 5612 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:49,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5407 Valid, 5612 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:49,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:49,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:49,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6074612857813233) internal successors, (6851), 4263 states have internal predecessors, (6851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6851 transitions. [2022-01-11 07:05:49,406 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6851 transitions. Word has length 132 [2022-01-11 07:05:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:49,406 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6851 transitions. [2022-01-11 07:05:49,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:49,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6851 transitions. [2022-01-11 07:05:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:49,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:49,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:49,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:05:49,408 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:49,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:49,409 INFO L85 PathProgramCache]: Analyzing trace with hash 331760403, now seen corresponding path program 1 times [2022-01-11 07:05:49,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:49,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054423017] [2022-01-11 07:05:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:49,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:49,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:49,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054423017] [2022-01-11 07:05:49,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054423017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:49,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:49,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:49,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453950237] [2022-01-11 07:05:49,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:49,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:49,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:49,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:49,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:49,456 INFO L87 Difference]: Start difference. First operand 4264 states and 6851 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:49,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:49,667 INFO L93 Difference]: Finished difference Result 6372 states and 9696 transitions. [2022-01-11 07:05:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:49,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:49,675 INFO L225 Difference]: With dead ends: 6372 [2022-01-11 07:05:49,676 INFO L226 Difference]: Without dead ends: 4264 [2022-01-11 07:05:49,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:49,680 INFO L933 BasicCegarLoop]: 5503 mSDtfsCounter, 5390 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5390 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:49,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5390 Valid, 5594 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:49,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-01-11 07:05:49,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2022-01-11 07:05:49,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 1.6004223369310182) internal successors, (6821), 4263 states have internal predecessors, (6821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 6821 transitions. [2022-01-11 07:05:49,884 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 6821 transitions. Word has length 132 [2022-01-11 07:05:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:49,885 INFO L470 AbstractCegarLoop]: Abstraction has 4264 states and 6821 transitions. [2022-01-11 07:05:49,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 6821 transitions. [2022-01-11 07:05:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:49,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:49,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:49,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:05:49,887 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:49,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:49,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1609261490, now seen corresponding path program 1 times [2022-01-11 07:05:49,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:49,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082182307] [2022-01-11 07:05:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:49,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:49,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:49,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082182307] [2022-01-11 07:05:49,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082182307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:49,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:49,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:05:49,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381819704] [2022-01-11 07:05:49,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:49,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:05:49,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:49,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:05:49,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:05:49,972 INFO L87 Difference]: Start difference. First operand 4264 states and 6821 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:50,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:50,407 INFO L93 Difference]: Finished difference Result 7226 states and 10823 transitions. [2022-01-11 07:05:50,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:05:50,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:50,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:50,420 INFO L225 Difference]: With dead ends: 7226 [2022-01-11 07:05:50,420 INFO L226 Difference]: Without dead ends: 5132 [2022-01-11 07:05:50,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:05:50,426 INFO L933 BasicCegarLoop]: 5626 mSDtfsCounter, 4294 mSDsluCounter, 13719 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 19345 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:50,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4294 Valid, 19345 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:05:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2022-01-11 07:05:50,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 4270. [2022-01-11 07:05:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4270 states, 4268 states have (on average 1.594423617619494) internal successors, (6805), 4269 states have internal predecessors, (6805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 6805 transitions. [2022-01-11 07:05:50,682 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 6805 transitions. Word has length 132 [2022-01-11 07:05:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:50,682 INFO L470 AbstractCegarLoop]: Abstraction has 4270 states and 6805 transitions. [2022-01-11 07:05:50,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 6805 transitions. [2022-01-11 07:05:50,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:50,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:50,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:50,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 07:05:50,685 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:50,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:50,685 INFO L85 PathProgramCache]: Analyzing trace with hash 400019251, now seen corresponding path program 1 times [2022-01-11 07:05:50,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:50,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356877968] [2022-01-11 07:05:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:50,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:50,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:50,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356877968] [2022-01-11 07:05:50,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356877968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:50,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:50,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:50,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860803970] [2022-01-11 07:05:50,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:50,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:50,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:50,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:50,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:50,738 INFO L87 Difference]: Start difference. First operand 4270 states and 6805 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:51,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:51,085 INFO L93 Difference]: Finished difference Result 8220 states and 12032 transitions. [2022-01-11 07:05:51,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:51,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:51,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:51,102 INFO L225 Difference]: With dead ends: 8220 [2022-01-11 07:05:51,102 INFO L226 Difference]: Without dead ends: 6122 [2022-01-11 07:05:51,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:51,110 INFO L933 BasicCegarLoop]: 5492 mSDtfsCounter, 5324 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5324 SdHoareTripleChecker+Valid, 6851 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:51,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5324 Valid, 6851 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:51,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2022-01-11 07:05:51,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6116. [2022-01-11 07:05:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6116 states, 6114 states have (on average 1.5085050703303893) internal successors, (9223), 6115 states have internal predecessors, (9223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:51,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 9223 transitions. [2022-01-11 07:05:51,431 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 9223 transitions. Word has length 132 [2022-01-11 07:05:51,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:51,432 INFO L470 AbstractCegarLoop]: Abstraction has 6116 states and 9223 transitions. [2022-01-11 07:05:51,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 9223 transitions. [2022-01-11 07:05:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:51,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:51,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:51,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 07:05:51,434 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:51,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:51,434 INFO L85 PathProgramCache]: Analyzing trace with hash 481721650, now seen corresponding path program 1 times [2022-01-11 07:05:51,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:51,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326902493] [2022-01-11 07:05:51,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:51,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:51,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:51,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326902493] [2022-01-11 07:05:51,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326902493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:51,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:51,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:51,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900940614] [2022-01-11 07:05:51,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:51,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:51,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:51,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:51,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:51,507 INFO L87 Difference]: Start difference. First operand 6116 states and 9223 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:52,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:52,075 INFO L93 Difference]: Finished difference Result 13567 states and 19029 transitions. [2022-01-11 07:05:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:52,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:52,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:52,098 INFO L225 Difference]: With dead ends: 13567 [2022-01-11 07:05:52,098 INFO L226 Difference]: Without dead ends: 9650 [2022-01-11 07:05:52,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:52,107 INFO L933 BasicCegarLoop]: 5489 mSDtfsCounter, 5297 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5297 SdHoareTripleChecker+Valid, 6848 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:52,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5297 Valid, 6848 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:05:52,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9650 states. [2022-01-11 07:05:52,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9650 to 9640. [2022-01-11 07:05:52,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9640 states, 9638 states have (on average 1.432973645984644) internal successors, (13811), 9639 states have internal predecessors, (13811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9640 states to 9640 states and 13811 transitions. [2022-01-11 07:05:52,675 INFO L78 Accepts]: Start accepts. Automaton has 9640 states and 13811 transitions. Word has length 132 [2022-01-11 07:05:52,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:52,675 INFO L470 AbstractCegarLoop]: Abstraction has 9640 states and 13811 transitions. [2022-01-11 07:05:52,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:52,676 INFO L276 IsEmpty]: Start isEmpty. Operand 9640 states and 13811 transitions. [2022-01-11 07:05:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:52,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:52,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:52,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 07:05:52,678 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:52,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:52,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1195800625, now seen corresponding path program 1 times [2022-01-11 07:05:52,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:52,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885890541] [2022-01-11 07:05:52,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:52,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:52,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:52,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885890541] [2022-01-11 07:05:52,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885890541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:52,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:52,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:05:52,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004664007] [2022-01-11 07:05:52,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:52,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:05:52,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:52,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:05:52,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:05:52,743 INFO L87 Difference]: Start difference. First operand 9640 states and 13811 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:53,765 INFO L93 Difference]: Finished difference Result 22580 states and 30808 transitions. [2022-01-11 07:05:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:05:53,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:53,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:53,811 INFO L225 Difference]: With dead ends: 22580 [2022-01-11 07:05:53,812 INFO L226 Difference]: Without dead ends: 15143 [2022-01-11 07:05:53,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:05:53,831 INFO L933 BasicCegarLoop]: 5525 mSDtfsCounter, 3964 mSDsluCounter, 17446 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3964 SdHoareTripleChecker+Valid, 22971 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:53,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3964 Valid, 22971 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 07:05:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15143 states. [2022-01-11 07:05:54,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15143 to 9772. [2022-01-11 07:05:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9772 states, 9770 states have (on average 1.4229273285568065) internal successors, (13902), 9771 states have internal predecessors, (13902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9772 states to 9772 states and 13902 transitions. [2022-01-11 07:05:54,390 INFO L78 Accepts]: Start accepts. Automaton has 9772 states and 13902 transitions. Word has length 132 [2022-01-11 07:05:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:54,390 INFO L470 AbstractCegarLoop]: Abstraction has 9772 states and 13902 transitions. [2022-01-11 07:05:54,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 9772 states and 13902 transitions. [2022-01-11 07:05:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:54,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:54,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:54,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 07:05:54,393 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:54,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1889193330, now seen corresponding path program 1 times [2022-01-11 07:05:54,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:54,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984818454] [2022-01-11 07:05:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:54,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:54,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:54,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:54,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984818454] [2022-01-11 07:05:54,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984818454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:54,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:54,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:05:54,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822479290] [2022-01-11 07:05:54,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:54,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:05:54,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:54,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:05:54,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:05:54,460 INFO L87 Difference]: Start difference. First operand 9772 states and 13902 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:55,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:55,380 INFO L93 Difference]: Finished difference Result 20570 states and 28043 transitions. [2022-01-11 07:05:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:05:55,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:55,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:55,410 INFO L225 Difference]: With dead ends: 20570 [2022-01-11 07:05:55,410 INFO L226 Difference]: Without dead ends: 13008 [2022-01-11 07:05:55,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:05:55,429 INFO L933 BasicCegarLoop]: 5450 mSDtfsCounter, 3449 mSDsluCounter, 15462 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3449 SdHoareTripleChecker+Valid, 20912 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:55,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3449 Valid, 20912 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:05:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13008 states. [2022-01-11 07:05:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13008 to 9784. [2022-01-11 07:05:55,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9784 states, 9782 states have (on average 1.414127990186056) internal successors, (13833), 9783 states have internal predecessors, (13833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9784 states to 9784 states and 13833 transitions. [2022-01-11 07:05:55,983 INFO L78 Accepts]: Start accepts. Automaton has 9784 states and 13833 transitions. Word has length 132 [2022-01-11 07:05:55,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:55,984 INFO L470 AbstractCegarLoop]: Abstraction has 9784 states and 13833 transitions. [2022-01-11 07:05:55,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:55,984 INFO L276 IsEmpty]: Start isEmpty. Operand 9784 states and 13833 transitions. [2022-01-11 07:05:55,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 07:05:55,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:55,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:55,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 07:05:55,987 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:55,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:55,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1881433971, now seen corresponding path program 1 times [2022-01-11 07:05:55,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:55,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568904214] [2022-01-11 07:05:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:55,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:56,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:56,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568904214] [2022-01-11 07:05:56,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568904214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:56,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:56,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:05:56,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842040016] [2022-01-11 07:05:56,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:56,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:56,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:56,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:56,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:56,067 INFO L87 Difference]: Start difference. First operand 9784 states and 13833 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:56,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:56,991 INFO L93 Difference]: Finished difference Result 24837 states and 33245 transitions. [2022-01-11 07:05:56,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:56,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 07:05:56,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:57,039 INFO L225 Difference]: With dead ends: 24837 [2022-01-11 07:05:57,039 INFO L226 Difference]: Without dead ends: 17211 [2022-01-11 07:05:57,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:57,057 INFO L933 BasicCegarLoop]: 5473 mSDtfsCounter, 5326 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5326 SdHoareTripleChecker+Valid, 6821 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:57,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5326 Valid, 6821 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:05:57,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17211 states. [2022-01-11 07:05:57,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17211 to 16631. [2022-01-11 07:05:57,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16631 states, 16629 states have (on average 1.3590113656864513) internal successors, (22599), 16630 states have internal predecessors, (22599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16631 states to 16631 states and 22599 transitions. [2022-01-11 07:05:57,932 INFO L78 Accepts]: Start accepts. Automaton has 16631 states and 22599 transitions. Word has length 132 [2022-01-11 07:05:57,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:05:57,932 INFO L470 AbstractCegarLoop]: Abstraction has 16631 states and 22599 transitions. [2022-01-11 07:05:57,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16631 states and 22599 transitions. [2022-01-11 07:05:57,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-11 07:05:57,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:05:57,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:05:57,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 07:05:57,945 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:05:57,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:05:57,945 INFO L85 PathProgramCache]: Analyzing trace with hash -330604891, now seen corresponding path program 1 times [2022-01-11 07:05:57,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:05:57,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64590331] [2022-01-11 07:05:57,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:05:57,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:05:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:05:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:05:58,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:05:58,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64590331] [2022-01-11 07:05:58,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64590331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:05:58,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:05:58,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:05:58,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997325012] [2022-01-11 07:05:58,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:05:58,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:05:58,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:05:58,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:05:58,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:58,087 INFO L87 Difference]: Start difference. First operand 16631 states and 22599 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:05:59,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:05:59,754 INFO L93 Difference]: Finished difference Result 45147 states and 59279 transitions. [2022-01-11 07:05:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:05:59,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2022-01-11 07:05:59,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:05:59,822 INFO L225 Difference]: With dead ends: 45147 [2022-01-11 07:05:59,823 INFO L226 Difference]: Without dead ends: 30680 [2022-01-11 07:05:59,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:05:59,848 INFO L933 BasicCegarLoop]: 5470 mSDtfsCounter, 5350 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5350 SdHoareTripleChecker+Valid, 6818 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:05:59,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5350 Valid, 6818 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:05:59,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30680 states. [2022-01-11 07:06:01,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30680 to 29646. [2022-01-11 07:06:01,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29646 states, 29644 states have (on average 1.3246862771555796) internal successors, (39269), 29645 states have internal predecessors, (39269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29646 states to 29646 states and 39269 transitions. [2022-01-11 07:06:01,585 INFO L78 Accepts]: Start accepts. Automaton has 29646 states and 39269 transitions. Word has length 214 [2022-01-11 07:06:01,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:01,586 INFO L470 AbstractCegarLoop]: Abstraction has 29646 states and 39269 transitions. [2022-01-11 07:06:01,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 29646 states and 39269 transitions. [2022-01-11 07:06:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-11 07:06:01,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:01,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:01,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 07:06:01,606 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash 945037029, now seen corresponding path program 1 times [2022-01-11 07:06:01,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:01,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720071341] [2022-01-11 07:06:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:01,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:06:01,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:01,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720071341] [2022-01-11 07:06:01,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720071341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:01,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:01,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:06:01,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835111064] [2022-01-11 07:06:01,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:01,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:01,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:01,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:01,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:01,692 INFO L87 Difference]: Start difference. First operand 29646 states and 39269 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:04,789 INFO L93 Difference]: Finished difference Result 82503 states and 106549 transitions. [2022-01-11 07:06:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:04,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2022-01-11 07:06:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:04,878 INFO L225 Difference]: With dead ends: 82503 [2022-01-11 07:06:04,878 INFO L226 Difference]: Without dead ends: 55101 [2022-01-11 07:06:04,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:04,907 INFO L933 BasicCegarLoop]: 6354 mSDtfsCounter, 5143 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5143 SdHoareTripleChecker+Valid, 7861 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:06:04,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5143 Valid, 7861 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:04,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55101 states. [2022-01-11 07:06:08,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55101 to 55099. [2022-01-11 07:06:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55099 states, 55097 states have (on average 1.293337205292484) internal successors, (71259), 55098 states have internal predecessors, (71259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55099 states to 55099 states and 71259 transitions. [2022-01-11 07:06:08,575 INFO L78 Accepts]: Start accepts. Automaton has 55099 states and 71259 transitions. Word has length 214 [2022-01-11 07:06:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:08,576 INFO L470 AbstractCegarLoop]: Abstraction has 55099 states and 71259 transitions. [2022-01-11 07:06:08,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:08,576 INFO L276 IsEmpty]: Start isEmpty. Operand 55099 states and 71259 transitions. [2022-01-11 07:06:08,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-11 07:06:08,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:08,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:08,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 07:06:08,607 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:08,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:08,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1639279420, now seen corresponding path program 1 times [2022-01-11 07:06:08,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:08,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758355436] [2022-01-11 07:06:08,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:08,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:06:08,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:08,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758355436] [2022-01-11 07:06:08,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758355436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:08,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:08,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:06:08,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317314519] [2022-01-11 07:06:08,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:08,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:08,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:08,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:08,782 INFO L87 Difference]: Start difference. First operand 55099 states and 71259 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:12,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:06:12,244 INFO L93 Difference]: Finished difference Result 107837 states and 138268 transitions. [2022-01-11 07:06:12,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:06:12,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 214 [2022-01-11 07:06:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:06:12,331 INFO L225 Difference]: With dead ends: 107837 [2022-01-11 07:06:12,331 INFO L226 Difference]: Without dead ends: 54982 [2022-01-11 07:06:12,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:12,363 INFO L933 BasicCegarLoop]: 5483 mSDtfsCounter, 1521 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 9441 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:06:12,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 9441 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:06:12,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54982 states. [2022-01-11 07:06:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54982 to 54982. [2022-01-11 07:06:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54982 states, 54980 states have (on average 1.293488541287741) internal successors, (71116), 54981 states have internal predecessors, (71116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54982 states to 54982 states and 71116 transitions. [2022-01-11 07:06:16,047 INFO L78 Accepts]: Start accepts. Automaton has 54982 states and 71116 transitions. Word has length 214 [2022-01-11 07:06:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:06:16,047 INFO L470 AbstractCegarLoop]: Abstraction has 54982 states and 71116 transitions. [2022-01-11 07:06:16,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:06:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 54982 states and 71116 transitions. [2022-01-11 07:06:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-11 07:06:16,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:06:16,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:06:16,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 07:06:16,064 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:06:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:06:16,064 INFO L85 PathProgramCache]: Analyzing trace with hash -102874994, now seen corresponding path program 1 times [2022-01-11 07:06:16,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:06:16,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925689674] [2022-01-11 07:06:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:06:16,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:06:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:06:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:06:16,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:06:16,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925689674] [2022-01-11 07:06:16,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925689674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:06:16,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:06:16,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:06:16,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946535968] [2022-01-11 07:06:16,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:06:16,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:06:16,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:06:16,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:06:16,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:06:16,185 INFO L87 Difference]: Start difference. First operand 54982 states and 71116 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)