/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_label49+token_ring.13.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:15:05,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:15:05,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:15:05,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:15:05,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:15:05,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:15:05,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:15:05,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:15:05,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:15:05,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:15:05,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:15:05,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:15:05,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:15:05,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:15:05,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:15:05,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:15:05,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:15:05,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:15:05,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:15:05,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:15:05,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:15:05,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:15:05,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:15:05,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:15:05,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:15:05,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:15:05,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:15:05,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:15:05,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:15:05,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 07:15:05,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 07:15:05,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 07:15:05,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 07:15:05,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 07:15:05,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 07:15:05,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 07:15:05,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 07:15:05,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 07:15:05,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:15:05,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:15:05,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:15:05,177 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 07:15:05,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:15:05,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:15:05,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:15:05,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:15:05,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:15:05,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:15:05,193 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:15:05,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:15:05,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:15:05,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:15:05,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:15:05,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:15:05,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:15:05,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:15:05,194 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:15:05,194 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:15:05,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:15:05,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:15:05,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:15:05,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:15:05,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:15:05,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:15:05,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:15:05,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:15:05,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:15:05,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:15:05,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:15:05,197 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:15:05,197 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:15:05,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:15:05,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:15:05,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:15:05,198 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:15:05,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:15:05,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:15:05,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:15:05,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:15:05,407 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:15:05,418 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:15:05,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label49+token_ring.13.cil-2.c [2022-01-11 07:15:05,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90c0520a/22f8b5768a794f3aa079b80c2f6e9d8d/FLAGec0d9f1d5 [2022-01-11 07:15:06,181 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:15:06,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label49+token_ring.13.cil-2.c [2022-01-11 07:15:06,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90c0520a/22f8b5768a794f3aa079b80c2f6e9d8d/FLAGec0d9f1d5 [2022-01-11 07:15:06,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90c0520a/22f8b5768a794f3aa079b80c2f6e9d8d [2022-01-11 07:15:06,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:15:06,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:15:06,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:15:06,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:15:06,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:15:06,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:15:06" (1/1) ... [2022-01-11 07:15:06,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1629ba3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:06, skipping insertion in model container [2022-01-11 07:15:06,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:15:06" (1/1) ... [2022-01-11 07:15:06,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:15:06,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:15:07,975 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_label49+token_ring.13.cil-2.c[380593,380606] [2022-01-11 07:15:08,000 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_label49+token_ring.13.cil-2.c[383339,383352] [2022-01-11 07:15:08,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:15:08,257 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:15:08,816 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_label49+token_ring.13.cil-2.c[380593,380606] [2022-01-11 07:15:08,820 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_label49+token_ring.13.cil-2.c[383339,383352] [2022-01-11 07:15:08,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:15:08,897 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:15:08,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08 WrapperNode [2022-01-11 07:15:08,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:15:08,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:15:08,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:15:08,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:15:08,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08" (1/1) ... [2022-01-11 07:15:08,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08" (1/1) ... [2022-01-11 07:15:09,423 INFO L137 Inliner]: procedures = 71, calls = 80, calls flagged for inlining = 75, calls inlined = 312, statements flattened = 16988 [2022-01-11 07:15:09,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:15:09,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:15:09,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:15:09,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:15:09,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08" (1/1) ... [2022-01-11 07:15:09,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08" (1/1) ... [2022-01-11 07:15:09,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08" (1/1) ... [2022-01-11 07:15:09,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08" (1/1) ... [2022-01-11 07:15:09,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08" (1/1) ... [2022-01-11 07:15:09,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08" (1/1) ... [2022-01-11 07:15:09,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08" (1/1) ... [2022-01-11 07:15:09,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:15:09,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:15:09,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:15:09,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:15:09,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08" (1/1) ... [2022-01-11 07:15:09,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:15:09,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:15:09,816 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 07:15:09,851 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 07:15:09,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:15:09,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:15:09,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:15:09,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:15:10,015 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:15:10,017 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:15:17,875 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:15:17,921 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:15:17,922 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-01-11 07:15:17,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:15:17 BoogieIcfgContainer [2022-01-11 07:15:17,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:15:17,926 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:15:17,926 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:15:17,927 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:15:17,929 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:15:17" (1/1) ... [2022-01-11 07:15:19,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:15:19 BasicIcfg [2022-01-11 07:15:19,260 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:15:19,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:15:19,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:15:19,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:15:19,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:15:06" (1/4) ... [2022-01-11 07:15:19,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6a08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:15:19, skipping insertion in model container [2022-01-11 07:15:19,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:15:08" (2/4) ... [2022-01-11 07:15:19,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6a08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:15:19, skipping insertion in model container [2022-01-11 07:15:19,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:15:17" (3/4) ... [2022-01-11 07:15:19,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6a08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:15:19, skipping insertion in model container [2022-01-11 07:15:19,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:15:19" (4/4) ... [2022-01-11 07:15:19,265 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.13.cil-2.cTransformedIcfg [2022-01-11 07:15:19,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:15:19,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 07:15:19,308 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:15:19,314 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 07:15:19,314 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 07:15:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 4208 states, 4205 states have (on average 1.6910820451843045) internal successors, (7111), 4207 states have internal predecessors, (7111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:19,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:19,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:19,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:19,380 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash 249960507, now seen corresponding path program 1 times [2022-01-11 07:15:19,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:19,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113947545] [2022-01-11 07:15:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:19,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:19,677 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 07:15:19,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:19,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113947545] [2022-01-11 07:15:19,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113947545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:19,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:19,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:15:19,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065704301] [2022-01-11 07:15:19,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:19,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:19,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:19,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:19,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:19,735 INFO L87 Difference]: Start difference. First operand has 4208 states, 4205 states have (on average 1.6910820451843045) internal successors, (7111), 4207 states have internal predecessors, (7111), 0 states have call successors, (0), 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 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:20,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:20,032 INFO L93 Difference]: Finished difference Result 8404 states and 14199 transitions. [2022-01-11 07:15:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:20,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:20,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:20,062 INFO L225 Difference]: With dead ends: 8404 [2022-01-11 07:15:20,062 INFO L226 Difference]: Without dead ends: 4141 [2022-01-11 07:15:20,076 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 07:15:20,082 INFO L933 BasicCegarLoop]: 7014 mSDtfsCounter, 2981 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2981 SdHoareTripleChecker+Valid, 11036 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 07:15:20,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2981 Valid, 11036 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:20,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2022-01-11 07:15:20,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 4141. [2022-01-11 07:15:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4141 states, 4139 states have (on average 1.678183136023194) internal successors, (6946), 4140 states have internal predecessors, (6946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 6946 transitions. [2022-01-11 07:15:20,269 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 6946 transitions. Word has length 176 [2022-01-11 07:15:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:20,270 INFO L470 AbstractCegarLoop]: Abstraction has 4141 states and 6946 transitions. [2022-01-11 07:15:20,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 6946 transitions. [2022-01-11 07:15:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:20,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:20,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:20,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:15:20,278 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:20,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash 682106, now seen corresponding path program 1 times [2022-01-11 07:15:20,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:20,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619011727] [2022-01-11 07:15:20,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:20,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:20,406 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 07:15:20,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:20,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619011727] [2022-01-11 07:15:20,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619011727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:20,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:20,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:20,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060007532] [2022-01-11 07:15:20,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:20,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:20,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:20,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:20,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:20,409 INFO L87 Difference]: Start difference. First operand 4141 states and 6946 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:20,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:20,564 INFO L93 Difference]: Finished difference Result 7886 states and 12459 transitions. [2022-01-11 07:15:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:20,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:20,583 INFO L225 Difference]: With dead ends: 7886 [2022-01-11 07:15:20,584 INFO L226 Difference]: Without dead ends: 5886 [2022-01-11 07:15:20,592 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 07:15:20,594 INFO L933 BasicCegarLoop]: 6940 mSDtfsCounter, 6778 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6778 SdHoareTripleChecker+Valid, 9635 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:20,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6778 Valid, 9635 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2022-01-11 07:15:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 5884. [2022-01-11 07:15:20,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.615096905814349) internal successors, (9500), 5883 states have internal predecessors, (9500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9500 transitions. [2022-01-11 07:15:20,738 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9500 transitions. Word has length 176 [2022-01-11 07:15:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:20,740 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9500 transitions. [2022-01-11 07:15:20,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9500 transitions. [2022-01-11 07:15:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:20,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:20,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:20,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:15:20,751 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2105020774, now seen corresponding path program 1 times [2022-01-11 07:15:20,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:20,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050119710] [2022-01-11 07:15:20,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:20,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:20,846 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 07:15:20,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:20,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050119710] [2022-01-11 07:15:20,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050119710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:20,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:20,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:20,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901739533] [2022-01-11 07:15:20,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:20,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:20,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:20,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:20,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:20,848 INFO L87 Difference]: Start difference. First operand 5884 states and 9500 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:20,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:20,996 INFO L93 Difference]: Finished difference Result 9626 states and 15007 transitions. [2022-01-11 07:15:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:20,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:20,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:21,016 INFO L225 Difference]: With dead ends: 9626 [2022-01-11 07:15:21,017 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:21,027 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 07:15:21,030 INFO L933 BasicCegarLoop]: 6934 mSDtfsCounter, 6918 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6918 SdHoareTripleChecker+Valid, 6934 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 07:15:21,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6918 Valid, 6934 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:21,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6137368242094525) internal successors, (9492), 5883 states have internal predecessors, (9492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9492 transitions. [2022-01-11 07:15:21,424 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9492 transitions. Word has length 176 [2022-01-11 07:15:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:21,424 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9492 transitions. [2022-01-11 07:15:21,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9492 transitions. [2022-01-11 07:15:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:21,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:21,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:21,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:15:21,427 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:21,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:21,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1429283962, now seen corresponding path program 1 times [2022-01-11 07:15:21,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:21,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271463875] [2022-01-11 07:15:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:21,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:21,511 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 07:15:21,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:21,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271463875] [2022-01-11 07:15:21,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271463875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:21,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:21,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:21,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327760758] [2022-01-11 07:15:21,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:21,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:21,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:21,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:21,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:21,514 INFO L87 Difference]: Start difference. First operand 5884 states and 9492 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:21,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:21,653 INFO L93 Difference]: Finished difference Result 9625 states and 14990 transitions. [2022-01-11 07:15:21,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:21,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:21,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:21,672 INFO L225 Difference]: With dead ends: 9625 [2022-01-11 07:15:21,673 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:21,681 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 07:15:21,686 INFO L933 BasicCegarLoop]: 6929 mSDtfsCounter, 6912 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6912 SdHoareTripleChecker+Valid, 6929 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 07:15:21,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6912 Valid, 6929 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:21,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:21,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6123767426045563) internal successors, (9484), 5883 states have internal predecessors, (9484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9484 transitions. [2022-01-11 07:15:21,849 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9484 transitions. Word has length 176 [2022-01-11 07:15:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:21,849 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9484 transitions. [2022-01-11 07:15:21,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9484 transitions. [2022-01-11 07:15:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:21,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:21,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:21,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:15:21,851 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:21,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:21,853 INFO L85 PathProgramCache]: Analyzing trace with hash -812010854, now seen corresponding path program 1 times [2022-01-11 07:15:21,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:21,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690249849] [2022-01-11 07:15:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:21,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:21,926 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 07:15:21,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:21,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690249849] [2022-01-11 07:15:21,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690249849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:21,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:21,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:21,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914886749] [2022-01-11 07:15:21,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:21,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:21,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:21,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:21,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:21,929 INFO L87 Difference]: Start difference. First operand 5884 states and 9484 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:22,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:22,076 INFO L93 Difference]: Finished difference Result 9624 states and 14973 transitions. [2022-01-11 07:15:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:22,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:22,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:22,103 INFO L225 Difference]: With dead ends: 9624 [2022-01-11 07:15:22,103 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:22,110 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 07:15:22,110 INFO L933 BasicCegarLoop]: 6924 mSDtfsCounter, 6906 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6906 SdHoareTripleChecker+Valid, 6924 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 07:15:22,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6906 Valid, 6924 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:22,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.61101666099966) internal successors, (9476), 5883 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:22,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9476 transitions. [2022-01-11 07:15:22,389 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9476 transitions. Word has length 176 [2022-01-11 07:15:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:22,392 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9476 transitions. [2022-01-11 07:15:22,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9476 transitions. [2022-01-11 07:15:22,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:22,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:22,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:22,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:15:22,395 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash -53026694, now seen corresponding path program 1 times [2022-01-11 07:15:22,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:22,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509264415] [2022-01-11 07:15:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:22,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:22,443 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 07:15:22,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:22,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509264415] [2022-01-11 07:15:22,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509264415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:22,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:22,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:22,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203537345] [2022-01-11 07:15:22,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:22,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:22,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:22,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:22,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:22,445 INFO L87 Difference]: Start difference. First operand 5884 states and 9476 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:22,570 INFO L93 Difference]: Finished difference Result 9623 states and 14956 transitions. [2022-01-11 07:15:22,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:22,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:22,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:22,582 INFO L225 Difference]: With dead ends: 9623 [2022-01-11 07:15:22,582 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:22,588 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 07:15:22,590 INFO L933 BasicCegarLoop]: 6919 mSDtfsCounter, 6900 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6900 SdHoareTripleChecker+Valid, 6919 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 07:15:22,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6900 Valid, 6919 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6096565793947637) internal successors, (9468), 5883 states have internal predecessors, (9468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9468 transitions. [2022-01-11 07:15:22,717 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9468 transitions. Word has length 176 [2022-01-11 07:15:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:22,718 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9468 transitions. [2022-01-11 07:15:22,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9468 transitions. [2022-01-11 07:15:22,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:22,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:22,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:22,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:15:22,720 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:22,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash -28543334, now seen corresponding path program 1 times [2022-01-11 07:15:22,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:22,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887397768] [2022-01-11 07:15:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:22,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:22,769 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 07:15:22,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:22,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887397768] [2022-01-11 07:15:22,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887397768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:22,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:22,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:22,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313134041] [2022-01-11 07:15:22,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:22,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:22,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:22,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:22,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:22,770 INFO L87 Difference]: Start difference. First operand 5884 states and 9468 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:22,876 INFO L93 Difference]: Finished difference Result 9622 states and 14939 transitions. [2022-01-11 07:15:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:22,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:22,888 INFO L225 Difference]: With dead ends: 9622 [2022-01-11 07:15:22,888 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:22,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:22,896 INFO L933 BasicCegarLoop]: 6914 mSDtfsCounter, 6894 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6894 SdHoareTripleChecker+Valid, 6914 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 07:15:22,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6894 Valid, 6914 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:22,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6082964977898675) internal successors, (9460), 5883 states have internal predecessors, (9460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9460 transitions. [2022-01-11 07:15:23,060 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9460 transitions. Word has length 176 [2022-01-11 07:15:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:23,061 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9460 transitions. [2022-01-11 07:15:23,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9460 transitions. [2022-01-11 07:15:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:23,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:23,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:23,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:15:23,063 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:23,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:23,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1967416198, now seen corresponding path program 1 times [2022-01-11 07:15:23,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:23,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195941610] [2022-01-11 07:15:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:23,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:23,116 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 07:15:23,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:23,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195941610] [2022-01-11 07:15:23,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195941610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:23,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:23,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:23,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294090298] [2022-01-11 07:15:23,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:23,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:23,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:23,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:23,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:23,119 INFO L87 Difference]: Start difference. First operand 5884 states and 9460 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:23,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:23,260 INFO L93 Difference]: Finished difference Result 9621 states and 14922 transitions. [2022-01-11 07:15:23,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:23,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:23,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:23,272 INFO L225 Difference]: With dead ends: 9621 [2022-01-11 07:15:23,272 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:23,281 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 07:15:23,281 INFO L933 BasicCegarLoop]: 6909 mSDtfsCounter, 6888 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6888 SdHoareTripleChecker+Valid, 6909 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 07:15:23,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6888 Valid, 6909 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:23,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:23,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:23,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.606936416184971) internal successors, (9452), 5883 states have internal predecessors, (9452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9452 transitions. [2022-01-11 07:15:23,438 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9452 transitions. Word has length 176 [2022-01-11 07:15:23,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:23,438 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9452 transitions. [2022-01-11 07:15:23,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9452 transitions. [2022-01-11 07:15:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:23,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:23,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:23,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:15:23,440 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:23,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:23,440 INFO L85 PathProgramCache]: Analyzing trace with hash 48249498, now seen corresponding path program 1 times [2022-01-11 07:15:23,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:23,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965259057] [2022-01-11 07:15:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:23,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:23,478 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 07:15:23,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:23,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965259057] [2022-01-11 07:15:23,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965259057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:23,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:23,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:23,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207292307] [2022-01-11 07:15:23,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:23,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:23,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:23,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:23,479 INFO L87 Difference]: Start difference. First operand 5884 states and 9452 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:23,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:23,598 INFO L93 Difference]: Finished difference Result 9620 states and 14905 transitions. [2022-01-11 07:15:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:23,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:23,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:23,609 INFO L225 Difference]: With dead ends: 9620 [2022-01-11 07:15:23,609 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:23,615 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 07:15:23,615 INFO L933 BasicCegarLoop]: 6904 mSDtfsCounter, 6882 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6882 SdHoareTripleChecker+Valid, 6904 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 07:15:23,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6882 Valid, 6904 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:23,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6055763345800749) internal successors, (9444), 5883 states have internal predecessors, (9444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9444 transitions. [2022-01-11 07:15:23,764 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9444 transitions. Word has length 176 [2022-01-11 07:15:23,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:23,765 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9444 transitions. [2022-01-11 07:15:23,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:23,765 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9444 transitions. [2022-01-11 07:15:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:23,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:23,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:23,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:15:23,767 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:23,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:23,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2103486342, now seen corresponding path program 1 times [2022-01-11 07:15:23,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:23,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058240614] [2022-01-11 07:15:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:23,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:23,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:15:23,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:23,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058240614] [2022-01-11 07:15:23,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058240614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:23,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:23,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:23,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418536024] [2022-01-11 07:15:23,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:23,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:23,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:23,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:23,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:23,805 INFO L87 Difference]: Start difference. First operand 5884 states and 9444 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:23,955 INFO L93 Difference]: Finished difference Result 9619 states and 14888 transitions. [2022-01-11 07:15:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:23,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:23,966 INFO L225 Difference]: With dead ends: 9619 [2022-01-11 07:15:23,967 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:23,974 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 07:15:23,975 INFO L933 BasicCegarLoop]: 6899 mSDtfsCounter, 6876 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6876 SdHoareTripleChecker+Valid, 6899 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 07:15:23,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6876 Valid, 6899 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:24,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6042162529751784) internal successors, (9436), 5883 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9436 transitions. [2022-01-11 07:15:24,171 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9436 transitions. Word has length 176 [2022-01-11 07:15:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:24,172 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9436 transitions. [2022-01-11 07:15:24,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9436 transitions. [2022-01-11 07:15:24,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:24,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:24,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:24,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:15:24,174 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:24,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash -510329190, now seen corresponding path program 1 times [2022-01-11 07:15:24,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:24,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816990228] [2022-01-11 07:15:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:24,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:24,216 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 07:15:24,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:24,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816990228] [2022-01-11 07:15:24,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816990228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:24,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:24,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:24,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158441093] [2022-01-11 07:15:24,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:24,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:24,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:24,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:24,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:24,218 INFO L87 Difference]: Start difference. First operand 5884 states and 9436 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:24,377 INFO L93 Difference]: Finished difference Result 9618 states and 14871 transitions. [2022-01-11 07:15:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:24,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:24,388 INFO L225 Difference]: With dead ends: 9618 [2022-01-11 07:15:24,389 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:24,396 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 07:15:24,396 INFO L933 BasicCegarLoop]: 6894 mSDtfsCounter, 6870 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6870 SdHoareTripleChecker+Valid, 6894 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 07:15:24,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6870 Valid, 6894 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:24,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6028561713702822) internal successors, (9428), 5883 states have internal predecessors, (9428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9428 transitions. [2022-01-11 07:15:24,596 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9428 transitions. Word has length 176 [2022-01-11 07:15:24,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:24,597 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9428 transitions. [2022-01-11 07:15:24,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:24,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9428 transitions. [2022-01-11 07:15:24,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:24,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:24,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:24,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:15:24,600 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:24,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:24,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1480725626, now seen corresponding path program 1 times [2022-01-11 07:15:24,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:24,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785047898] [2022-01-11 07:15:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:24,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:15:24,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:24,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785047898] [2022-01-11 07:15:24,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785047898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:24,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:24,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:24,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51412054] [2022-01-11 07:15:24,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:24,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:24,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:24,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:24,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:24,647 INFO L87 Difference]: Start difference. First operand 5884 states and 9428 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:24,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:24,786 INFO L93 Difference]: Finished difference Result 9617 states and 14854 transitions. [2022-01-11 07:15:24,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:24,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:24,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:24,797 INFO L225 Difference]: With dead ends: 9617 [2022-01-11 07:15:24,797 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:24,803 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 07:15:24,804 INFO L933 BasicCegarLoop]: 6889 mSDtfsCounter, 6864 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6864 SdHoareTripleChecker+Valid, 6889 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 07:15:24,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6864 Valid, 6889 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:24,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:24,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:24,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6014960897653858) internal successors, (9420), 5883 states have internal predecessors, (9420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:24,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9420 transitions. [2022-01-11 07:15:24,946 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9420 transitions. Word has length 176 [2022-01-11 07:15:24,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:24,946 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9420 transitions. [2022-01-11 07:15:24,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:24,946 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9420 transitions. [2022-01-11 07:15:24,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:24,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:24,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:24,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:15:24,948 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:24,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1364540774, now seen corresponding path program 1 times [2022-01-11 07:15:24,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:24,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878410405] [2022-01-11 07:15:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:24,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:24,991 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 07:15:24,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:24,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878410405] [2022-01-11 07:15:24,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878410405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:24,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:24,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:24,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125865057] [2022-01-11 07:15:24,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:24,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:24,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:24,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:24,993 INFO L87 Difference]: Start difference. First operand 5884 states and 9420 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:25,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:25,119 INFO L93 Difference]: Finished difference Result 9615 states and 14835 transitions. [2022-01-11 07:15:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:25,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:25,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:25,128 INFO L225 Difference]: With dead ends: 9615 [2022-01-11 07:15:25,129 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:25,134 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 07:15:25,135 INFO L933 BasicCegarLoop]: 6884 mSDtfsCounter, 6857 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6857 SdHoareTripleChecker+Valid, 6884 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 07:15:25,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6857 Valid, 6884 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:25,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:25,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.6001360081604896) internal successors, (9412), 5883 states have internal predecessors, (9412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9412 transitions. [2022-01-11 07:15:25,327 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9412 transitions. Word has length 176 [2022-01-11 07:15:25,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:25,328 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9412 transitions. [2022-01-11 07:15:25,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9412 transitions. [2022-01-11 07:15:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:25,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:25,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:25,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:15:25,329 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash -844597062, now seen corresponding path program 1 times [2022-01-11 07:15:25,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:25,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728398798] [2022-01-11 07:15:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:25,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:25,374 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 07:15:25,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:25,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728398798] [2022-01-11 07:15:25,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728398798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:25,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:25,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:25,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951337338] [2022-01-11 07:15:25,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:25,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:25,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:25,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:25,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:25,376 INFO L87 Difference]: Start difference. First operand 5884 states and 9412 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:25,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:25,506 INFO L93 Difference]: Finished difference Result 9614 states and 14818 transitions. [2022-01-11 07:15:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:25,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:25,518 INFO L225 Difference]: With dead ends: 9614 [2022-01-11 07:15:25,518 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:25,525 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 07:15:25,526 INFO L933 BasicCegarLoop]: 6879 mSDtfsCounter, 6851 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6851 SdHoareTripleChecker+Valid, 6879 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 07:15:25,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6851 Valid, 6879 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:25,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5987759265555934) internal successors, (9404), 5883 states have internal predecessors, (9404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:25,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9404 transitions. [2022-01-11 07:15:25,677 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9404 transitions. Word has length 176 [2022-01-11 07:15:25,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:25,677 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9404 transitions. [2022-01-11 07:15:25,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:25,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9404 transitions. [2022-01-11 07:15:25,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:25,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:25,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:25,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:15:25,679 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:25,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1527479962, now seen corresponding path program 1 times [2022-01-11 07:15:25,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:25,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979773343] [2022-01-11 07:15:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:25,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:25,721 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 07:15:25,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:25,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979773343] [2022-01-11 07:15:25,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979773343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:25,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:25,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:25,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788232839] [2022-01-11 07:15:25,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:25,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:25,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:25,723 INFO L87 Difference]: Start difference. First operand 5884 states and 9404 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:25,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:25,880 INFO L93 Difference]: Finished difference Result 9613 states and 14801 transitions. [2022-01-11 07:15:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:25,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:25,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:25,891 INFO L225 Difference]: With dead ends: 9613 [2022-01-11 07:15:25,891 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:25,897 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 07:15:25,898 INFO L933 BasicCegarLoop]: 6842 mSDtfsCounter, 6687 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6687 SdHoareTripleChecker+Valid, 6980 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:25,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6687 Valid, 6980 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:25,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:26,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.592315538932336) internal successors, (9366), 5883 states have internal predecessors, (9366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9366 transitions. [2022-01-11 07:15:26,054 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9366 transitions. Word has length 176 [2022-01-11 07:15:26,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:26,054 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9366 transitions. [2022-01-11 07:15:26,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9366 transitions. [2022-01-11 07:15:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:26,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:26,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:26,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:15:26,056 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:26,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:26,056 INFO L85 PathProgramCache]: Analyzing trace with hash 610354104, now seen corresponding path program 1 times [2022-01-11 07:15:26,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:26,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608796278] [2022-01-11 07:15:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:26,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:26,099 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 07:15:26,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:26,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608796278] [2022-01-11 07:15:26,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608796278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:26,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:26,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:26,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331321358] [2022-01-11 07:15:26,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:26,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:26,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:26,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:26,102 INFO L87 Difference]: Start difference. First operand 5884 states and 9366 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:26,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:26,284 INFO L93 Difference]: Finished difference Result 9612 states and 14724 transitions. [2022-01-11 07:15:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:26,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:26,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:26,294 INFO L225 Difference]: With dead ends: 9612 [2022-01-11 07:15:26,294 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:26,300 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 07:15:26,301 INFO L933 BasicCegarLoop]: 6821 mSDtfsCounter, 6666 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6666 SdHoareTripleChecker+Valid, 6958 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:26,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6666 Valid, 6958 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:26,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5858551513090786) internal successors, (9328), 5883 states have internal predecessors, (9328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9328 transitions. [2022-01-11 07:15:26,457 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9328 transitions. Word has length 176 [2022-01-11 07:15:26,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:26,457 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9328 transitions. [2022-01-11 07:15:26,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:26,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9328 transitions. [2022-01-11 07:15:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:26,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:26,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:26,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:15:26,459 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:26,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:26,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1576499287, now seen corresponding path program 1 times [2022-01-11 07:15:26,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:26,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459361777] [2022-01-11 07:15:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:26,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:26,496 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 07:15:26,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:26,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459361777] [2022-01-11 07:15:26,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459361777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:26,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:26,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:26,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762075028] [2022-01-11 07:15:26,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:26,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:26,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:26,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:26,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:26,498 INFO L87 Difference]: Start difference. First operand 5884 states and 9328 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:26,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:26,679 INFO L93 Difference]: Finished difference Result 9611 states and 14647 transitions. [2022-01-11 07:15:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:26,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:26,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:26,689 INFO L225 Difference]: With dead ends: 9611 [2022-01-11 07:15:26,689 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:26,697 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 07:15:26,697 INFO L933 BasicCegarLoop]: 6800 mSDtfsCounter, 6645 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6645 SdHoareTripleChecker+Valid, 6936 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:26,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6645 Valid, 6936 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5793947636858212) internal successors, (9290), 5883 states have internal predecessors, (9290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:26,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9290 transitions. [2022-01-11 07:15:26,891 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9290 transitions. Word has length 176 [2022-01-11 07:15:26,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:26,891 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9290 transitions. [2022-01-11 07:15:26,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9290 transitions. [2022-01-11 07:15:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:26,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:26,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:26,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:15:26,893 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:26,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1414803574, now seen corresponding path program 1 times [2022-01-11 07:15:26,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:26,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990552304] [2022-01-11 07:15:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:26,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:26,949 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 07:15:26,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:26,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990552304] [2022-01-11 07:15:26,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990552304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:26,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:26,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:26,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075262811] [2022-01-11 07:15:26,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:26,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:26,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:26,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:26,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:26,951 INFO L87 Difference]: Start difference. First operand 5884 states and 9290 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:27,122 INFO L93 Difference]: Finished difference Result 9610 states and 14570 transitions. [2022-01-11 07:15:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:27,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:27,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:27,137 INFO L225 Difference]: With dead ends: 9610 [2022-01-11 07:15:27,137 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:27,142 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 07:15:27,142 INFO L933 BasicCegarLoop]: 6779 mSDtfsCounter, 6624 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6624 SdHoareTripleChecker+Valid, 6914 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:27,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6624 Valid, 6914 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:27,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5729343760625638) internal successors, (9252), 5883 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9252 transitions. [2022-01-11 07:15:27,289 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9252 transitions. Word has length 176 [2022-01-11 07:15:27,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:27,290 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9252 transitions. [2022-01-11 07:15:27,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9252 transitions. [2022-01-11 07:15:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:27,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:27,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:27,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:15:27,292 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1940569195, now seen corresponding path program 1 times [2022-01-11 07:15:27,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:27,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798885742] [2022-01-11 07:15:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:27,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:27,350 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 07:15:27,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:27,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798885742] [2022-01-11 07:15:27,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798885742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:27,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:27,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:27,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256508877] [2022-01-11 07:15:27,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:27,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:27,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:27,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:27,352 INFO L87 Difference]: Start difference. First operand 5884 states and 9252 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:27,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:27,519 INFO L93 Difference]: Finished difference Result 9609 states and 14493 transitions. [2022-01-11 07:15:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:27,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:27,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:27,530 INFO L225 Difference]: With dead ends: 9609 [2022-01-11 07:15:27,530 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:27,535 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 07:15:27,535 INFO L933 BasicCegarLoop]: 6758 mSDtfsCounter, 6603 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6603 SdHoareTripleChecker+Valid, 6892 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:27,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6603 Valid, 6892 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:27,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:27,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5664739884393064) internal successors, (9214), 5883 states have internal predecessors, (9214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9214 transitions. [2022-01-11 07:15:27,698 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9214 transitions. Word has length 176 [2022-01-11 07:15:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:27,698 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9214 transitions. [2022-01-11 07:15:27,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9214 transitions. [2022-01-11 07:15:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:27,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:27,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:27,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 07:15:27,700 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:27,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1596949197, now seen corresponding path program 1 times [2022-01-11 07:15:27,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:27,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198798603] [2022-01-11 07:15:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:27,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:27,751 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 07:15:27,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:27,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198798603] [2022-01-11 07:15:27,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198798603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:27,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:27,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:27,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696719675] [2022-01-11 07:15:27,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:27,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:27,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:27,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:27,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:27,752 INFO L87 Difference]: Start difference. First operand 5884 states and 9214 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:27,929 INFO L93 Difference]: Finished difference Result 9608 states and 14416 transitions. [2022-01-11 07:15:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:27,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:27,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:27,939 INFO L225 Difference]: With dead ends: 9608 [2022-01-11 07:15:27,939 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:27,943 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 07:15:27,944 INFO L933 BasicCegarLoop]: 6737 mSDtfsCounter, 6582 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6582 SdHoareTripleChecker+Valid, 6870 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:27,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6582 Valid, 6870 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:27,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:28,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.560013600816049) internal successors, (9176), 5883 states have internal predecessors, (9176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9176 transitions. [2022-01-11 07:15:28,109 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9176 transitions. Word has length 176 [2022-01-11 07:15:28,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:28,110 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9176 transitions. [2022-01-11 07:15:28,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:28,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9176 transitions. [2022-01-11 07:15:28,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:28,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:28,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:28,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 07:15:28,112 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:28,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1885327662, now seen corresponding path program 1 times [2022-01-11 07:15:28,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:28,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146983910] [2022-01-11 07:15:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:28,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:28,148 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 07:15:28,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:28,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146983910] [2022-01-11 07:15:28,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146983910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:28,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:28,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:28,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585666274] [2022-01-11 07:15:28,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:28,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:28,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:28,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:28,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:28,150 INFO L87 Difference]: Start difference. First operand 5884 states and 9176 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:28,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:28,351 INFO L93 Difference]: Finished difference Result 9607 states and 14339 transitions. [2022-01-11 07:15:28,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:28,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:28,369 INFO L225 Difference]: With dead ends: 9607 [2022-01-11 07:15:28,370 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:28,374 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 07:15:28,374 INFO L933 BasicCegarLoop]: 6716 mSDtfsCounter, 6561 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 6848 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:28,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6561 Valid, 6848 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:28,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5535532131927916) internal successors, (9138), 5883 states have internal predecessors, (9138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:28,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9138 transitions. [2022-01-11 07:15:28,556 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9138 transitions. Word has length 176 [2022-01-11 07:15:28,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:28,556 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9138 transitions. [2022-01-11 07:15:28,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:28,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9138 transitions. [2022-01-11 07:15:28,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:28,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:28,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:28,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 07:15:28,558 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:28,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:28,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1672330255, now seen corresponding path program 1 times [2022-01-11 07:15:28,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:28,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211040525] [2022-01-11 07:15:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:28,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:28,606 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 07:15:28,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:28,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211040525] [2022-01-11 07:15:28,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211040525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:28,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:28,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:28,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534176826] [2022-01-11 07:15:28,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:28,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:28,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:28,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:28,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:28,608 INFO L87 Difference]: Start difference. First operand 5884 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:28,846 INFO L93 Difference]: Finished difference Result 9606 states and 14262 transitions. [2022-01-11 07:15:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:28,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:28,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:28,856 INFO L225 Difference]: With dead ends: 9606 [2022-01-11 07:15:28,856 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:28,861 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 07:15:28,862 INFO L933 BasicCegarLoop]: 6695 mSDtfsCounter, 6540 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6540 SdHoareTripleChecker+Valid, 6826 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:28,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6540 Valid, 6826 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:28,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5470928255695342) internal successors, (9100), 5883 states have internal predecessors, (9100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9100 transitions. [2022-01-11 07:15:29,085 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9100 transitions. Word has length 176 [2022-01-11 07:15:29,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:29,086 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9100 transitions. [2022-01-11 07:15:29,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:29,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9100 transitions. [2022-01-11 07:15:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:29,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:29,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:29,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 07:15:29,088 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:29,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:29,088 INFO L85 PathProgramCache]: Analyzing trace with hash 343168016, now seen corresponding path program 1 times [2022-01-11 07:15:29,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:29,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888301589] [2022-01-11 07:15:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:29,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:29,152 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 07:15:29,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:29,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888301589] [2022-01-11 07:15:29,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888301589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:29,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:29,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:29,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902753024] [2022-01-11 07:15:29,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:29,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:29,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:29,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:29,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:29,155 INFO L87 Difference]: Start difference. First operand 5884 states and 9100 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:29,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:29,352 INFO L93 Difference]: Finished difference Result 9605 states and 14185 transitions. [2022-01-11 07:15:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:29,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:29,361 INFO L225 Difference]: With dead ends: 9605 [2022-01-11 07:15:29,361 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:29,366 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 07:15:29,367 INFO L933 BasicCegarLoop]: 6674 mSDtfsCounter, 6519 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6519 SdHoareTripleChecker+Valid, 6804 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:29,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6519 Valid, 6804 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:29,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:29,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5406324379462768) internal successors, (9062), 5883 states have internal predecessors, (9062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9062 transitions. [2022-01-11 07:15:29,546 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9062 transitions. Word has length 176 [2022-01-11 07:15:29,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:29,547 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9062 transitions. [2022-01-11 07:15:29,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:29,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9062 transitions. [2022-01-11 07:15:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:29,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:29,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:29,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 07:15:29,549 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:29,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1653882322, now seen corresponding path program 1 times [2022-01-11 07:15:29,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:29,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735296202] [2022-01-11 07:15:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:29,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:29,588 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 07:15:29,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:29,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735296202] [2022-01-11 07:15:29,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735296202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:29,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:29,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:29,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095353234] [2022-01-11 07:15:29,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:29,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:29,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:29,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:29,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:29,591 INFO L87 Difference]: Start difference. First operand 5884 states and 9062 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:29,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:29,782 INFO L93 Difference]: Finished difference Result 9604 states and 14108 transitions. [2022-01-11 07:15:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:29,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:29,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:29,790 INFO L225 Difference]: With dead ends: 9604 [2022-01-11 07:15:29,790 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:29,795 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 07:15:29,795 INFO L933 BasicCegarLoop]: 6653 mSDtfsCounter, 6498 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6498 SdHoareTripleChecker+Valid, 6782 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:29,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6498 Valid, 6782 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:30,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5341720503230194) internal successors, (9024), 5883 states have internal predecessors, (9024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 9024 transitions. [2022-01-11 07:15:30,028 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 9024 transitions. Word has length 176 [2022-01-11 07:15:30,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:30,028 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 9024 transitions. [2022-01-11 07:15:30,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:30,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 9024 transitions. [2022-01-11 07:15:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:30,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:30,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:30,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 07:15:30,030 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:30,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1535373517, now seen corresponding path program 1 times [2022-01-11 07:15:30,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:30,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754758523] [2022-01-11 07:15:30,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:30,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:30,068 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 07:15:30,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:30,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754758523] [2022-01-11 07:15:30,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754758523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:30,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:30,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:30,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040550814] [2022-01-11 07:15:30,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:30,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:30,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:30,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:30,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:30,070 INFO L87 Difference]: Start difference. First operand 5884 states and 9024 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:30,265 INFO L93 Difference]: Finished difference Result 9603 states and 14031 transitions. [2022-01-11 07:15:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:30,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:30,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:30,272 INFO L225 Difference]: With dead ends: 9603 [2022-01-11 07:15:30,272 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:30,275 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 07:15:30,276 INFO L933 BasicCegarLoop]: 6632 mSDtfsCounter, 6477 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6477 SdHoareTripleChecker+Valid, 6760 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:30,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6477 Valid, 6760 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:30,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:30,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.527711662699762) internal successors, (8986), 5883 states have internal predecessors, (8986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8986 transitions. [2022-01-11 07:15:30,467 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8986 transitions. Word has length 176 [2022-01-11 07:15:30,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:30,467 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8986 transitions. [2022-01-11 07:15:30,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:30,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8986 transitions. [2022-01-11 07:15:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:30,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:30,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:30,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 07:15:30,469 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:30,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:30,469 INFO L85 PathProgramCache]: Analyzing trace with hash -504732948, now seen corresponding path program 1 times [2022-01-11 07:15:30,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:30,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793435155] [2022-01-11 07:15:30,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:30,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:30,505 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 07:15:30,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:30,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793435155] [2022-01-11 07:15:30,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793435155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:30,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:30,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:30,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2986201] [2022-01-11 07:15:30,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:30,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:30,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:30,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:30,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:30,506 INFO L87 Difference]: Start difference. First operand 5884 states and 8986 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:30,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:30,717 INFO L93 Difference]: Finished difference Result 9602 states and 13954 transitions. [2022-01-11 07:15:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:30,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:30,725 INFO L225 Difference]: With dead ends: 9602 [2022-01-11 07:15:30,725 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:30,731 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 07:15:30,732 INFO L933 BasicCegarLoop]: 6611 mSDtfsCounter, 6456 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6456 SdHoareTripleChecker+Valid, 6738 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:30,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6456 Valid, 6738 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:30,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5212512750765046) internal successors, (8948), 5883 states have internal predecessors, (8948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8948 transitions. [2022-01-11 07:15:30,916 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8948 transitions. Word has length 176 [2022-01-11 07:15:30,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:30,916 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8948 transitions. [2022-01-11 07:15:30,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8948 transitions. [2022-01-11 07:15:30,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:30,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:30,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:30,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 07:15:30,918 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1555853323, now seen corresponding path program 1 times [2022-01-11 07:15:30,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:30,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31980327] [2022-01-11 07:15:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:30,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:30,954 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 07:15:30,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:30,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31980327] [2022-01-11 07:15:30,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31980327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:30,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:30,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:30,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890572277] [2022-01-11 07:15:30,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:30,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:30,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:30,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:30,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:30,955 INFO L87 Difference]: Start difference. First operand 5884 states and 8948 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:31,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:31,165 INFO L93 Difference]: Finished difference Result 9601 states and 13877 transitions. [2022-01-11 07:15:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:31,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:31,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:31,173 INFO L225 Difference]: With dead ends: 9601 [2022-01-11 07:15:31,173 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:31,177 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 07:15:31,178 INFO L933 BasicCegarLoop]: 6590 mSDtfsCounter, 6435 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6435 SdHoareTripleChecker+Valid, 6716 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:31,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6435 Valid, 6716 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:31,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5147908874532472) internal successors, (8910), 5883 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8910 transitions. [2022-01-11 07:15:31,404 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8910 transitions. Word has length 176 [2022-01-11 07:15:31,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:31,404 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8910 transitions. [2022-01-11 07:15:31,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:31,404 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8910 transitions. [2022-01-11 07:15:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:31,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:31,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:31,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 07:15:31,406 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:31,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:31,406 INFO L85 PathProgramCache]: Analyzing trace with hash -254050262, now seen corresponding path program 1 times [2022-01-11 07:15:31,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:31,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177718453] [2022-01-11 07:15:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:31,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:31,445 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 07:15:31,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:31,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177718453] [2022-01-11 07:15:31,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177718453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:31,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:31,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:31,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631289063] [2022-01-11 07:15:31,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:31,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:31,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:31,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:31,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:31,446 INFO L87 Difference]: Start difference. First operand 5884 states and 8910 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:31,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:31,665 INFO L93 Difference]: Finished difference Result 9600 states and 13800 transitions. [2022-01-11 07:15:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:31,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:31,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:31,672 INFO L225 Difference]: With dead ends: 9600 [2022-01-11 07:15:31,673 INFO L226 Difference]: Without dead ends: 5884 [2022-01-11 07:15:31,676 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 07:15:31,677 INFO L933 BasicCegarLoop]: 6569 mSDtfsCounter, 6414 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6414 SdHoareTripleChecker+Valid, 6694 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:31,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6414 Valid, 6694 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-11 07:15:31,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5884. [2022-01-11 07:15:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5884 states, 5882 states have (on average 1.5083304998299898) internal successors, (8872), 5883 states have internal predecessors, (8872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5884 states to 5884 states and 8872 transitions. [2022-01-11 07:15:31,891 INFO L78 Accepts]: Start accepts. Automaton has 5884 states and 8872 transitions. Word has length 176 [2022-01-11 07:15:31,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:31,891 INFO L470 AbstractCegarLoop]: Abstraction has 5884 states and 8872 transitions. [2022-01-11 07:15:31,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:31,891 INFO L276 IsEmpty]: Start isEmpty. Operand 5884 states and 8872 transitions. [2022-01-11 07:15:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:31,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:31,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:31,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 07:15:31,893 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:31,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash 692792265, now seen corresponding path program 1 times [2022-01-11 07:15:31,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:31,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521377217] [2022-01-11 07:15:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:31,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:31,949 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 07:15:31,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:31,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521377217] [2022-01-11 07:15:31,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521377217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:31,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:31,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:15:31,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900582858] [2022-01-11 07:15:31,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:31,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:15:31,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:31,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:15:31,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:15:31,951 INFO L87 Difference]: Start difference. First operand 5884 states and 8872 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:32,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:32,536 INFO L93 Difference]: Finished difference Result 10798 states and 15371 transitions. [2022-01-11 07:15:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:15:32,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:32,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:32,548 INFO L225 Difference]: With dead ends: 10798 [2022-01-11 07:15:32,548 INFO L226 Difference]: Without dead ends: 7096 [2022-01-11 07:15:32,555 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 07:15:32,556 INFO L933 BasicCegarLoop]: 6748 mSDtfsCounter, 7401 mSDsluCounter, 14386 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7401 SdHoareTripleChecker+Valid, 21134 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:32,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7401 Valid, 21134 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:15:32,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7096 states. [2022-01-11 07:15:32,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7096 to 5890. [2022-01-11 07:15:32,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5890 states, 5888 states have (on average 1.502717391304348) internal successors, (8848), 5889 states have internal predecessors, (8848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 8848 transitions. [2022-01-11 07:15:32,815 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 8848 transitions. Word has length 176 [2022-01-11 07:15:32,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:32,815 INFO L470 AbstractCegarLoop]: Abstraction has 5890 states and 8848 transitions. [2022-01-11 07:15:32,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 8848 transitions. [2022-01-11 07:15:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:32,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:32,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:32,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 07:15:32,817 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:32,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:32,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1979274570, now seen corresponding path program 1 times [2022-01-11 07:15:32,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:32,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319725227] [2022-01-11 07:15:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:32,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:32,875 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 07:15:32,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:32,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319725227] [2022-01-11 07:15:32,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319725227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:32,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:32,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:15:32,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785229110] [2022-01-11 07:15:32,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:32,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:15:32,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:32,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:15:32,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:15:32,876 INFO L87 Difference]: Start difference. First operand 5890 states and 8848 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:33,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:33,430 INFO L93 Difference]: Finished difference Result 11687 states and 16433 transitions. [2022-01-11 07:15:33,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:15:33,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:33,456 INFO L225 Difference]: With dead ends: 11687 [2022-01-11 07:15:33,456 INFO L226 Difference]: Without dead ends: 8014 [2022-01-11 07:15:33,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:15:33,462 INFO L933 BasicCegarLoop]: 6640 mSDtfsCounter, 6511 mSDsluCounter, 16330 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6511 SdHoareTripleChecker+Valid, 22970 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:33,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6511 Valid, 22970 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:15:33,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8014 states. [2022-01-11 07:15:33,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8014 to 5896. [2022-01-11 07:15:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5896 states, 5894 states have (on average 1.497115710892433) internal successors, (8824), 5895 states have internal predecessors, (8824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5896 states to 5896 states and 8824 transitions. [2022-01-11 07:15:33,744 INFO L78 Accepts]: Start accepts. Automaton has 5896 states and 8824 transitions. Word has length 176 [2022-01-11 07:15:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:33,744 INFO L470 AbstractCegarLoop]: Abstraction has 5896 states and 8824 transitions. [2022-01-11 07:15:33,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5896 states and 8824 transitions. [2022-01-11 07:15:33,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:33,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:33,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:33,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 07:15:33,745 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:33,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:33,746 INFO L85 PathProgramCache]: Analyzing trace with hash -461347189, now seen corresponding path program 1 times [2022-01-11 07:15:33,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:33,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510760054] [2022-01-11 07:15:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:33,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:33,797 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 07:15:33,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:33,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510760054] [2022-01-11 07:15:33,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510760054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:33,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:33,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:33,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069852859] [2022-01-11 07:15:33,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:33,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:33,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:33,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:33,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:33,798 INFO L87 Difference]: Start difference. First operand 5896 states and 8824 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:34,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:34,146 INFO L93 Difference]: Finished difference Result 9640 states and 13645 transitions. [2022-01-11 07:15:34,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:34,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:34,157 INFO L225 Difference]: With dead ends: 9640 [2022-01-11 07:15:34,157 INFO L226 Difference]: Without dead ends: 5896 [2022-01-11 07:15:34,163 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 07:15:34,164 INFO L933 BasicCegarLoop]: 6548 mSDtfsCounter, 6409 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6409 SdHoareTripleChecker+Valid, 6548 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 07:15:34,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6409 Valid, 6548 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:34,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2022-01-11 07:15:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5896. [2022-01-11 07:15:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5896 states, 5894 states have (on average 1.495758398371225) internal successors, (8816), 5895 states have internal predecessors, (8816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5896 states to 5896 states and 8816 transitions. [2022-01-11 07:15:34,457 INFO L78 Accepts]: Start accepts. Automaton has 5896 states and 8816 transitions. Word has length 176 [2022-01-11 07:15:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:34,457 INFO L470 AbstractCegarLoop]: Abstraction has 5896 states and 8816 transitions. [2022-01-11 07:15:34,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5896 states and 8816 transitions. [2022-01-11 07:15:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 07:15:34,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:34,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:34,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 07:15:34,459 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1823516266, now seen corresponding path program 1 times [2022-01-11 07:15:34,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:34,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005078173] [2022-01-11 07:15:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:34,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:34,510 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 07:15:34,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:34,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005078173] [2022-01-11 07:15:34,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005078173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:34,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:34,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:15:34,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080796443] [2022-01-11 07:15:34,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:34,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:34,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:34,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:34,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:34,511 INFO L87 Difference]: Start difference. First operand 5896 states and 8816 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:35,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:35,033 INFO L93 Difference]: Finished difference Result 13182 states and 18210 transitions. [2022-01-11 07:15:35,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:35,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-01-11 07:15:35,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:35,047 INFO L225 Difference]: With dead ends: 13182 [2022-01-11 07:15:35,047 INFO L226 Difference]: Without dead ends: 9456 [2022-01-11 07:15:35,054 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 07:15:35,054 INFO L933 BasicCegarLoop]: 6533 mSDtfsCounter, 6338 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 8877 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:35,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6338 Valid, 8877 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:35,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9456 states. [2022-01-11 07:15:35,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9456 to 9256. [2022-01-11 07:15:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9256 states, 9254 states have (on average 1.4185217203371514) internal successors, (13127), 9255 states have internal predecessors, (13127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9256 states to 9256 states and 13127 transitions. [2022-01-11 07:15:35,525 INFO L78 Accepts]: Start accepts. Automaton has 9256 states and 13127 transitions. Word has length 176 [2022-01-11 07:15:35,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:35,525 INFO L470 AbstractCegarLoop]: Abstraction has 9256 states and 13127 transitions. [2022-01-11 07:15:35,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9256 states and 13127 transitions. [2022-01-11 07:15:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-11 07:15:35,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:35,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:35,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 07:15:35,531 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:35,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1850101902, now seen corresponding path program 1 times [2022-01-11 07:15:35,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:35,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331221192] [2022-01-11 07:15:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:35,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:35,596 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 07:15:35,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:35,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331221192] [2022-01-11 07:15:35,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331221192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:35,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:35,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:15:35,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026196118] [2022-01-11 07:15:35,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:35,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:35,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:35,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:35,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:35,597 INFO L87 Difference]: Start difference. First operand 9256 states and 13127 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:36,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:36,569 INFO L93 Difference]: Finished difference Result 23192 states and 31064 transitions. [2022-01-11 07:15:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:36,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-11 07:15:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:36,591 INFO L225 Difference]: With dead ends: 23192 [2022-01-11 07:15:36,592 INFO L226 Difference]: Without dead ends: 16112 [2022-01-11 07:15:36,601 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 07:15:36,602 INFO L933 BasicCegarLoop]: 6530 mSDtfsCounter, 6374 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6374 SdHoareTripleChecker+Valid, 8874 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:36,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6374 Valid, 8874 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:15:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16112 states. [2022-01-11 07:15:37,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16112 to 15742. [2022-01-11 07:15:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15742 states, 15740 states have (on average 1.3620711562897077) internal successors, (21439), 15741 states have internal predecessors, (21439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15742 states to 15742 states and 21439 transitions. [2022-01-11 07:15:37,550 INFO L78 Accepts]: Start accepts. Automaton has 15742 states and 21439 transitions. Word has length 286 [2022-01-11 07:15:37,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:37,550 INFO L470 AbstractCegarLoop]: Abstraction has 15742 states and 21439 transitions. [2022-01-11 07:15:37,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand 15742 states and 21439 transitions. [2022-01-11 07:15:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-11 07:15:37,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:37,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:37,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 07:15:37,559 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:37,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1092325298, now seen corresponding path program 1 times [2022-01-11 07:15:37,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:37,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792902192] [2022-01-11 07:15:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:37,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:37,631 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 07:15:37,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:37,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792902192] [2022-01-11 07:15:37,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792902192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:37,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:37,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:15:37,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844458528] [2022-01-11 07:15:37,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:37,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:15:37,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:37,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:15:37,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:15:37,633 INFO L87 Difference]: Start difference. First operand 15742 states and 21439 transitions. Second operand has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:39,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:39,470 INFO L93 Difference]: Finished difference Result 41926 states and 55260 transitions. [2022-01-11 07:15:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:15:39,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-11 07:15:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:39,518 INFO L225 Difference]: With dead ends: 41926 [2022-01-11 07:15:39,518 INFO L226 Difference]: Without dead ends: 28448 [2022-01-11 07:15:39,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:15:39,538 INFO L933 BasicCegarLoop]: 6489 mSDtfsCounter, 5264 mSDsluCounter, 19057 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 25546 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:39,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5264 Valid, 25546 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:15:39,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28448 states. [2022-01-11 07:15:40,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28448 to 15766. [2022-01-11 07:15:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15766 states, 15764 states have (on average 1.3546054300938848) internal successors, (21354), 15765 states have internal predecessors, (21354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15766 states to 15766 states and 21354 transitions. [2022-01-11 07:15:40,656 INFO L78 Accepts]: Start accepts. Automaton has 15766 states and 21354 transitions. Word has length 286 [2022-01-11 07:15:40,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:40,656 INFO L470 AbstractCegarLoop]: Abstraction has 15766 states and 21354 transitions. [2022-01-11 07:15:40,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:40,657 INFO L276 IsEmpty]: Start isEmpty. Operand 15766 states and 21354 transitions. [2022-01-11 07:15:40,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-11 07:15:40,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:40,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:40,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 07:15:40,663 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 900691188, now seen corresponding path program 1 times [2022-01-11 07:15:40,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:40,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731106839] [2022-01-11 07:15:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:40,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:40,731 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 07:15:40,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:40,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731106839] [2022-01-11 07:15:40,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731106839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:40,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:40,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:15:40,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895398894] [2022-01-11 07:15:40,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:40,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:40,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:40,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:40,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:40,733 INFO L87 Difference]: Start difference. First operand 15766 states and 21354 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:42,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:42,675 INFO L93 Difference]: Finished difference Result 42155 states and 54797 transitions. [2022-01-11 07:15:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:42,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2022-01-11 07:15:42,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:42,710 INFO L225 Difference]: With dead ends: 42155 [2022-01-11 07:15:42,710 INFO L226 Difference]: Without dead ends: 28683 [2022-01-11 07:15:42,722 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 07:15:42,723 INFO L933 BasicCegarLoop]: 8195 mSDtfsCounter, 6065 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6065 SdHoareTripleChecker+Valid, 10750 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 07:15:42,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6065 Valid, 10750 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28683 states. [2022-01-11 07:15:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28683 to 28681. [2022-01-11 07:15:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28681 states, 28679 states have (on average 1.3102618640817323) internal successors, (37577), 28680 states have internal predecessors, (37577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28681 states to 28681 states and 37577 transitions. [2022-01-11 07:15:44,690 INFO L78 Accepts]: Start accepts. Automaton has 28681 states and 37577 transitions. Word has length 286 [2022-01-11 07:15:44,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:44,690 INFO L470 AbstractCegarLoop]: Abstraction has 28681 states and 37577 transitions. [2022-01-11 07:15:44,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:44,691 INFO L276 IsEmpty]: Start isEmpty. Operand 28681 states and 37577 transitions. [2022-01-11 07:15:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-11 07:15:44,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:44,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:44,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 07:15:44,710 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:44,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:44,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1771512787, now seen corresponding path program 1 times [2022-01-11 07:15:44,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:44,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4672987] [2022-01-11 07:15:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:44,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:44,744 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 07:15:44,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:44,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4672987] [2022-01-11 07:15:44,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4672987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:44,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:44,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:15:44,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313718239] [2022-01-11 07:15:44,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:44,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:44,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:44,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:44,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:44,746 INFO L87 Difference]: Start difference. First operand 28681 states and 37577 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:46,700 INFO L93 Difference]: Finished difference Result 54901 states and 70786 transitions. [2022-01-11 07:15:46,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:46,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 286 [2022-01-11 07:15:46,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:46,737 INFO L225 Difference]: With dead ends: 54901 [2022-01-11 07:15:46,738 INFO L226 Difference]: Without dead ends: 28514 [2022-01-11 07:15:46,759 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 07:15:46,759 INFO L933 BasicCegarLoop]: 6531 mSDtfsCounter, 2569 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 10489 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 07:15:46,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2569 Valid, 10489 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28514 states. [2022-01-11 07:15:48,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28514 to 28514. [2022-01-11 07:15:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28514 states, 28512 states have (on average 1.310851571268238) internal successors, (37375), 28513 states have internal predecessors, (37375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28514 states to 28514 states and 37375 transitions. [2022-01-11 07:15:48,833 INFO L78 Accepts]: Start accepts. Automaton has 28514 states and 37375 transitions. Word has length 286 [2022-01-11 07:15:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:48,833 INFO L470 AbstractCegarLoop]: Abstraction has 28514 states and 37375 transitions. [2022-01-11 07:15:48,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 28514 states and 37375 transitions. [2022-01-11 07:15:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-01-11 07:15:48,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:48,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:48,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-11 07:15:48,978 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash 690198726, now seen corresponding path program 1 times [2022-01-11 07:15:48,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:48,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027756196] [2022-01-11 07:15:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:48,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:49,044 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 07:15:49,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:49,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027756196] [2022-01-11 07:15:49,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027756196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:49,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:49,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:15:49,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268697832] [2022-01-11 07:15:49,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:49,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:49,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:49,047 INFO L87 Difference]: Start difference. First operand 28514 states and 37375 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:52,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:15:52,786 INFO L93 Difference]: Finished difference Result 80472 states and 102968 transitions. [2022-01-11 07:15:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:15:52,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 287 [2022-01-11 07:15:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:15:52,858 INFO L225 Difference]: With dead ends: 80472 [2022-01-11 07:15:52,858 INFO L226 Difference]: Without dead ends: 54252 [2022-01-11 07:15:52,882 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 07:15:52,882 INFO L933 BasicCegarLoop]: 7085 mSDtfsCounter, 6338 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 9622 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:15:52,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6338 Valid, 9622 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:15:52,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54252 states. [2022-01-11 07:15:56,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54252 to 52954. [2022-01-11 07:15:57,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52954 states, 52952 states have (on average 1.2858060129928992) internal successors, (68086), 52953 states have internal predecessors, (68086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52954 states to 52954 states and 68086 transitions. [2022-01-11 07:15:57,113 INFO L78 Accepts]: Start accepts. Automaton has 52954 states and 68086 transitions. Word has length 287 [2022-01-11 07:15:57,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:15:57,113 INFO L470 AbstractCegarLoop]: Abstraction has 52954 states and 68086 transitions. [2022-01-11 07:15:57,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:15:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 52954 states and 68086 transitions. [2022-01-11 07:15:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-01-11 07:15:57,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:15:57,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:57,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-11 07:15:57,135 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:15:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:15:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1967893725, now seen corresponding path program 1 times [2022-01-11 07:15:57,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:15:57,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852208936] [2022-01-11 07:15:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:15:57,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:15:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:15:57,172 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 07:15:57,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:15:57,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852208936] [2022-01-11 07:15:57,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852208936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:15:57,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:15:57,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:15:57,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111294627] [2022-01-11 07:15:57,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:15:57,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:15:57,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:15:57,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:15:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:15:57,174 INFO L87 Difference]: Start difference. First operand 52954 states and 68086 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:16:01,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:16:01,509 INFO L93 Difference]: Finished difference Result 103555 states and 131934 transitions. [2022-01-11 07:16:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:16:01,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 287 [2022-01-11 07:16:01,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:16:01,592 INFO L225 Difference]: With dead ends: 103555 [2022-01-11 07:16:01,592 INFO L226 Difference]: Without dead ends: 52788 [2022-01-11 07:16:01,626 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 07:16:01,627 INFO L933 BasicCegarLoop]: 6530 mSDtfsCounter, 2567 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 10488 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 07:16:01,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2567 Valid, 10488 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:16:01,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52788 states.