/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:52:13,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:52:13,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:52:13,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:52:13,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:52:13,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:52:13,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:52:14,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:52:14,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:52:14,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:52:14,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:52:14,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:52:14,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:52:14,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:52:14,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:52:14,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:52:14,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:52:14,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:52:14,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:52:14,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:52:14,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:52:14,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:52:14,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:52:14,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:52:14,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:52:14,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:52:14,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:52:14,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:52:14,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:52:14,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:52:14,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:52:14,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:52:14,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:52:14,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:52:14,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:52:14,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:52:14,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:52:14,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:52:14,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:52:14,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:52:14,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:52:14,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:52:14,062 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:52:14,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:52:14,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:52:14,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:52:14,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:52:14,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:52:14,064 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:52:14,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:52:14,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:52:14,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:52:14,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:52:14,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:52:14,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:52:14,066 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:52:14,066 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:52:14,066 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:52:14,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:52:14,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:52:14,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:52:14,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:52:14,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:52:14,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:52:14,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:52:14,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:52:14,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:52:14,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:52:14,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:52:14,068 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:52:14,068 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:52:14,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:52:14,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:52:14,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:52:14,069 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:52:14,069 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:52:14,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:52:14,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:52:14,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:52:14,342 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:52:14,343 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:52:14,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c [2022-01-11 01:52:14,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae9bd314/a5e2f7216a984b759e15cf1c09cb5eee/FLAGa6160d5ed [2022-01-11 01:52:14,856 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:52:14,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c [2022-01-11 01:52:14,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae9bd314/a5e2f7216a984b759e15cf1c09cb5eee/FLAGa6160d5ed [2022-01-11 01:52:14,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae9bd314/a5e2f7216a984b759e15cf1c09cb5eee [2022-01-11 01:52:14,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:52:14,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:52:14,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:52:14,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:52:14,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:52:14,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:52:14" (1/1) ... [2022-01-11 01:52:14,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac4e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:14, skipping insertion in model container [2022-01-11 01:52:14,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:52:14" (1/1) ... [2022-01-11 01:52:14,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:52:14,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:52:15,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c[911,924] [2022-01-11 01:52:15,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c[8416,8429] [2022-01-11 01:52:15,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:52:15,346 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:52:15,355 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c[911,924] [2022-01-11 01:52:15,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c[8416,8429] [2022-01-11 01:52:15,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:52:15,439 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:52:15,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15 WrapperNode [2022-01-11 01:52:15,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:52:15,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:52:15,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:52:15,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:52:15,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15" (1/1) ... [2022-01-11 01:52:15,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15" (1/1) ... [2022-01-11 01:52:15,546 INFO L137 Inliner]: procedures = 82, calls = 101, calls flagged for inlining = 96, calls inlined = 336, statements flattened = 5069 [2022-01-11 01:52:15,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:52:15,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:52:15,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:52:15,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:52:15,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15" (1/1) ... [2022-01-11 01:52:15,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15" (1/1) ... [2022-01-11 01:52:15,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15" (1/1) ... [2022-01-11 01:52:15,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15" (1/1) ... [2022-01-11 01:52:15,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15" (1/1) ... [2022-01-11 01:52:15,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15" (1/1) ... [2022-01-11 01:52:15,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15" (1/1) ... [2022-01-11 01:52:15,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:52:15,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:52:15,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:52:15,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:52:15,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15" (1/1) ... [2022-01-11 01:52:15,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:52:15,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:52:15,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 01:52:15,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 01:52:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:52:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:52:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:52:15,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:52:15,836 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:52:15,837 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:52:17,796 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume !(1bv32 == ~q_free~0); [2022-01-11 01:52:17,796 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2022-01-11 01:52:17,797 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:52:17,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:52:17,808 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-01-11 01:52:17,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:52:17 BoogieIcfgContainer [2022-01-11 01:52:17,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:52:17,811 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:52:17,811 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:52:17,812 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:52:17,814 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:52:17" (1/1) ... [2022-01-11 01:52:18,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:52:18 BasicIcfg [2022-01-11 01:52:18,185 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:52:18,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:52:18,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:52:18,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:52:18,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:52:14" (1/4) ... [2022-01-11 01:52:18,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602393ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:52:18, skipping insertion in model container [2022-01-11 01:52:18,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:52:15" (2/4) ... [2022-01-11 01:52:18,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602393ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:52:18, skipping insertion in model container [2022-01-11 01:52:18,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:52:17" (3/4) ... [2022-01-11 01:52:18,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602393ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:52:18, skipping insertion in model container [2022-01-11 01:52:18,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:52:18" (4/4) ... [2022-01-11 01:52:18,190 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.13.cil-1.cTransformedIcfg [2022-01-11 01:52:18,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:52:18,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-11 01:52:18,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:52:18,233 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 01:52:18,233 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-11 01:52:18,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 2175 states, 2170 states have (on average 1.5032258064516129) internal successors, (3262), 2174 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:18,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 01:52:18,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:18,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:52:18,265 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash 25325464, now seen corresponding path program 1 times [2022-01-11 01:52:18,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:18,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589055846] [2022-01-11 01:52:18,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:18,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:18,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:18,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589055846] [2022-01-11 01:52:18,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589055846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:18,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:18,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:52:18,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128213071] [2022-01-11 01:52:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:18,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:18,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:18,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:18,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:18,580 INFO L87 Difference]: Start difference. First operand has 2175 states, 2170 states have (on average 1.5032258064516129) internal successors, (3262), 2174 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:18,760 INFO L93 Difference]: Finished difference Result 4297 states and 6428 transitions. [2022-01-11 01:52:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:18,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-11 01:52:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:18,784 INFO L225 Difference]: With dead ends: 4297 [2022-01-11 01:52:18,784 INFO L226 Difference]: Without dead ends: 2297 [2022-01-11 01:52:18,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:18,793 INFO L933 BasicCegarLoop]: 3208 mSDtfsCounter, 185 mSDsluCounter, 3176 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 6384 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:18,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 6384 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:52:18,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-01-11 01:52:18,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2293. [2022-01-11 01:52:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 2289 states have (on average 1.4805591961555264) internal successors, (3389), 2292 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 3389 transitions. [2022-01-11 01:52:18,868 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 3389 transitions. Word has length 44 [2022-01-11 01:52:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:18,869 INFO L470 AbstractCegarLoop]: Abstraction has 2293 states and 3389 transitions. [2022-01-11 01:52:18,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 3389 transitions. [2022-01-11 01:52:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 01:52:18,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:18,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:52:18,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:52:18,871 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:18,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1523002264, now seen corresponding path program 1 times [2022-01-11 01:52:18,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:18,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377662875] [2022-01-11 01:52:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:18,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:18,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:18,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377662875] [2022-01-11 01:52:18,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377662875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:18,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:18,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:52:18,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064838397] [2022-01-11 01:52:18,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:18,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:18,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:18,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:18,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:18,969 INFO L87 Difference]: Start difference. First operand 2293 states and 3389 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:19,061 INFO L93 Difference]: Finished difference Result 2711 states and 3994 transitions. [2022-01-11 01:52:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:19,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-11 01:52:19,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:19,070 INFO L225 Difference]: With dead ends: 2711 [2022-01-11 01:52:19,071 INFO L226 Difference]: Without dead ends: 2471 [2022-01-11 01:52:19,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:19,073 INFO L933 BasicCegarLoop]: 3193 mSDtfsCounter, 3167 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3167 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:19,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3167 Valid, 3328 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:19,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2022-01-11 01:52:19,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2463. [2022-01-11 01:52:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 2459 states have (on average 1.4737698251321676) internal successors, (3624), 2462 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 3624 transitions. [2022-01-11 01:52:19,121 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 3624 transitions. Word has length 44 [2022-01-11 01:52:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:19,122 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 3624 transitions. [2022-01-11 01:52:19,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:19,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 3624 transitions. [2022-01-11 01:52:19,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 01:52:19,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:19,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:52:19,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:52:19,124 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:19,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1809857334, now seen corresponding path program 1 times [2022-01-11 01:52:19,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:19,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987038193] [2022-01-11 01:52:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:19,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:19,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:19,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987038193] [2022-01-11 01:52:19,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987038193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:19,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:19,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:52:19,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733087160] [2022-01-11 01:52:19,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:19,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:19,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:19,191 INFO L87 Difference]: Start difference. First operand 2463 states and 3624 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:19,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:19,265 INFO L93 Difference]: Finished difference Result 3185 states and 4658 transitions. [2022-01-11 01:52:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:19,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-01-11 01:52:19,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:19,274 INFO L225 Difference]: With dead ends: 3185 [2022-01-11 01:52:19,274 INFO L226 Difference]: Without dead ends: 2789 [2022-01-11 01:52:19,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:19,276 INFO L933 BasicCegarLoop]: 3187 mSDtfsCounter, 3151 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3151 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:19,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3151 Valid, 3325 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2022-01-11 01:52:19,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2781. [2022-01-11 01:52:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2781 states, 2777 states have (on average 1.4609290601368383) internal successors, (4057), 2780 states have internal predecessors, (4057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 4057 transitions. [2022-01-11 01:52:19,344 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 4057 transitions. Word has length 45 [2022-01-11 01:52:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:19,344 INFO L470 AbstractCegarLoop]: Abstraction has 2781 states and 4057 transitions. [2022-01-11 01:52:19,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 4057 transitions. [2022-01-11 01:52:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 01:52:19,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:19,346 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:52:19,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:52:19,347 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:19,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:19,347 INFO L85 PathProgramCache]: Analyzing trace with hash 308115616, now seen corresponding path program 1 times [2022-01-11 01:52:19,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:19,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163451746] [2022-01-11 01:52:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:19,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 01:52:19,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:19,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163451746] [2022-01-11 01:52:19,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163451746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:19,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:19,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:52:19,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427985752] [2022-01-11 01:52:19,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:19,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:19,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:19,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:19,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:19,421 INFO L87 Difference]: Start difference. First operand 2781 states and 4057 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:19,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:19,533 INFO L93 Difference]: Finished difference Result 4149 states and 5959 transitions. [2022-01-11 01:52:19,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:19,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 59 [2022-01-11 01:52:19,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:19,544 INFO L225 Difference]: With dead ends: 4149 [2022-01-11 01:52:19,544 INFO L226 Difference]: Without dead ends: 3453 [2022-01-11 01:52:19,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:19,555 INFO L933 BasicCegarLoop]: 3190 mSDtfsCounter, 3146 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:19,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3146 Valid, 3355 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2022-01-11 01:52:19,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 3449. [2022-01-11 01:52:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 3445 states have (on average 1.434833091436865) internal successors, (4943), 3448 states have internal predecessors, (4943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4943 transitions. [2022-01-11 01:52:19,658 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4943 transitions. Word has length 59 [2022-01-11 01:52:19,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:19,660 INFO L470 AbstractCegarLoop]: Abstraction has 3449 states and 4943 transitions. [2022-01-11 01:52:19,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4943 transitions. [2022-01-11 01:52:19,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 01:52:19,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:19,662 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:52:19,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:52:19,662 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:19,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:19,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1819783390, now seen corresponding path program 1 times [2022-01-11 01:52:19,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:19,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807148041] [2022-01-11 01:52:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:19,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:19,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:19,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807148041] [2022-01-11 01:52:19,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807148041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:19,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:19,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:52:19,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434844423] [2022-01-11 01:52:19,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:19,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:19,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:19,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:19,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:19,734 INFO L87 Difference]: Start difference. First operand 3449 states and 4943 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:19,872 INFO L93 Difference]: Finished difference Result 6073 states and 8525 transitions. [2022-01-11 01:52:19,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:19,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-11 01:52:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:19,901 INFO L225 Difference]: With dead ends: 6073 [2022-01-11 01:52:19,902 INFO L226 Difference]: Without dead ends: 4753 [2022-01-11 01:52:19,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:19,904 INFO L933 BasicCegarLoop]: 3341 mSDtfsCounter, 146 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6518 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:19,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 6518 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4753 states. [2022-01-11 01:52:19,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4753 to 4753. [2022-01-11 01:52:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4753 states, 4749 states have (on average 1.4047167824805222) internal successors, (6671), 4752 states have internal predecessors, (6671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 6671 transitions. [2022-01-11 01:52:20,013 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 6671 transitions. Word has length 61 [2022-01-11 01:52:20,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:20,014 INFO L470 AbstractCegarLoop]: Abstraction has 4753 states and 6671 transitions. [2022-01-11 01:52:20,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:20,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 6671 transitions. [2022-01-11 01:52:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 01:52:20,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:20,018 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-01-11 01:52:20,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:52:20,019 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:20,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:20,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1623374069, now seen corresponding path program 1 times [2022-01-11 01:52:20,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:20,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121048810] [2022-01-11 01:52:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:20,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-11 01:52:20,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:20,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121048810] [2022-01-11 01:52:20,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121048810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:20,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:20,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:52:20,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406743842] [2022-01-11 01:52:20,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:20,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:20,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:20,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:20,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:20,067 INFO L87 Difference]: Start difference. First operand 4753 states and 6671 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:20,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:20,221 INFO L93 Difference]: Finished difference Result 9833 states and 13555 transitions. [2022-01-11 01:52:20,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:20,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-11 01:52:20,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:20,243 INFO L225 Difference]: With dead ends: 9833 [2022-01-11 01:52:20,243 INFO L226 Difference]: Without dead ends: 7293 [2022-01-11 01:52:20,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:20,250 INFO L933 BasicCegarLoop]: 3191 mSDtfsCounter, 131 mSDsluCounter, 3144 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 6335 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:20,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 6335 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7293 states. [2022-01-11 01:52:20,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7293 to 7289. [2022-01-11 01:52:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7289 states, 7285 states have (on average 1.3791352093342484) internal successors, (10047), 7288 states have internal predecessors, (10047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7289 states to 7289 states and 10047 transitions. [2022-01-11 01:52:20,445 INFO L78 Accepts]: Start accepts. Automaton has 7289 states and 10047 transitions. Word has length 103 [2022-01-11 01:52:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:20,445 INFO L470 AbstractCegarLoop]: Abstraction has 7289 states and 10047 transitions. [2022-01-11 01:52:20,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 7289 states and 10047 transitions. [2022-01-11 01:52:20,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-11 01:52:20,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:20,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:52:20,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:52:20,451 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:20,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1377134403, now seen corresponding path program 1 times [2022-01-11 01:52:20,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:20,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887176383] [2022-01-11 01:52:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:20,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:20,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:20,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887176383] [2022-01-11 01:52:20,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887176383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:20,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:20,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:52:20,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113337166] [2022-01-11 01:52:20,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:20,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:20,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:20,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:20,507 INFO L87 Difference]: Start difference. First operand 7289 states and 10047 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:20,696 INFO L93 Difference]: Finished difference Result 9857 states and 13551 transitions. [2022-01-11 01:52:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:20,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-11 01:52:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:20,709 INFO L225 Difference]: With dead ends: 9857 [2022-01-11 01:52:20,709 INFO L226 Difference]: Without dead ends: 2028 [2022-01-11 01:52:20,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:20,714 INFO L933 BasicCegarLoop]: 3297 mSDtfsCounter, 112 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 6457 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:20,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 6457 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-01-11 01:52:20,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2028. [2022-01-11 01:52:20,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2026 states have (on average 1.481243830207305) internal successors, (3001), 2027 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:20,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 3001 transitions. [2022-01-11 01:52:20,753 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 3001 transitions. Word has length 104 [2022-01-11 01:52:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:20,753 INFO L470 AbstractCegarLoop]: Abstraction has 2028 states and 3001 transitions. [2022-01-11 01:52:20,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 3001 transitions. [2022-01-11 01:52:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:20,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:20,756 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 01:52:20,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:52:20,757 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2147195661, now seen corresponding path program 1 times [2022-01-11 01:52:20,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:20,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825673036] [2022-01-11 01:52:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:20,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:20,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:20,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825673036] [2022-01-11 01:52:20,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825673036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:20,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:20,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:52:20,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513081422] [2022-01-11 01:52:20,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:20,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:20,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:20,812 INFO L87 Difference]: Start difference. First operand 2028 states and 3001 transitions. 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 01:52:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:20,861 INFO L93 Difference]: Finished difference Result 4037 states and 5969 transitions. [2022-01-11 01:52:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:20,861 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 01:52:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:20,866 INFO L225 Difference]: With dead ends: 4037 [2022-01-11 01:52:20,866 INFO L226 Difference]: Without dead ends: 2028 [2022-01-11 01:52:20,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:20,869 INFO L933 BasicCegarLoop]: 2999 mSDtfsCounter, 2982 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2982 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:20,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2982 Valid, 3000 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:20,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-01-11 01:52:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2028. [2022-01-11 01:52:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2026 states have (on average 1.4807502467917077) internal successors, (3000), 2027 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 3000 transitions. [2022-01-11 01:52:20,909 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 3000 transitions. Word has length 176 [2022-01-11 01:52:20,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:20,909 INFO L470 AbstractCegarLoop]: Abstraction has 2028 states and 3000 transitions. [2022-01-11 01:52:20,910 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 01:52:20,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 3000 transitions. [2022-01-11 01:52:20,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:20,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:20,911 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 01:52:20,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:52:20,911 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:20,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:20,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1097902420, now seen corresponding path program 1 times [2022-01-11 01:52:20,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:20,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966997091] [2022-01-11 01:52:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:20,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:20,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:20,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966997091] [2022-01-11 01:52:20,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966997091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:20,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:20,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:20,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24782431] [2022-01-11 01:52:20,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:20,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:20,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:20,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:20,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:20,959 INFO L87 Difference]: Start difference. First operand 2028 states and 3000 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 01:52:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:21,043 INFO L93 Difference]: Finished difference Result 5787 states and 8535 transitions. [2022-01-11 01:52:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:21,044 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 01:52:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:21,051 INFO L225 Difference]: With dead ends: 5787 [2022-01-11 01:52:21,051 INFO L226 Difference]: Without dead ends: 3780 [2022-01-11 01:52:21,054 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 01:52:21,055 INFO L933 BasicCegarLoop]: 2994 mSDtfsCounter, 2832 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2832 SdHoareTripleChecker+Valid, 5700 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:21,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2832 Valid, 5700 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:21,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2022-01-11 01:52:21,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3776. [2022-01-11 01:52:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4742978272390037) internal successors, (5564), 3775 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5564 transitions. [2022-01-11 01:52:21,185 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5564 transitions. Word has length 176 [2022-01-11 01:52:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:21,185 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5564 transitions. [2022-01-11 01:52:21,185 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 01:52:21,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5564 transitions. [2022-01-11 01:52:21,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:21,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:21,186 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 01:52:21,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:52:21,187 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:21,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:21,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1007800460, now seen corresponding path program 1 times [2022-01-11 01:52:21,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:21,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606371464] [2022-01-11 01:52:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:21,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:21,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:21,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606371464] [2022-01-11 01:52:21,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606371464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:21,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:21,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:21,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011845472] [2022-01-11 01:52:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:21,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:21,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:21,236 INFO L87 Difference]: Start difference. First operand 3776 states and 5564 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 01:52:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:21,340 INFO L93 Difference]: Finished difference Result 7530 states and 11092 transitions. [2022-01-11 01:52:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:21,341 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 01:52:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:21,348 INFO L225 Difference]: With dead ends: 7530 [2022-01-11 01:52:21,348 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:21,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:21,356 INFO L933 BasicCegarLoop]: 2988 mSDtfsCounter, 2972 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2972 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:21,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2972 Valid, 2988 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4721780604133545) internal successors, (5556), 3775 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5556 transitions. [2022-01-11 01:52:21,463 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5556 transitions. Word has length 176 [2022-01-11 01:52:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:21,463 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5556 transitions. [2022-01-11 01:52:21,463 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 01:52:21,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5556 transitions. [2022-01-11 01:52:21,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:21,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:21,464 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 01:52:21,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:52:21,465 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1768463020, now seen corresponding path program 1 times [2022-01-11 01:52:21,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:21,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442248349] [2022-01-11 01:52:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:21,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:21,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:21,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442248349] [2022-01-11 01:52:21,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442248349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:21,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:21,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:21,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565147757] [2022-01-11 01:52:21,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:21,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:21,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:21,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:21,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:21,509 INFO L87 Difference]: Start difference. First operand 3776 states and 5556 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 01:52:21,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:21,599 INFO L93 Difference]: Finished difference Result 7529 states and 11075 transitions. [2022-01-11 01:52:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:21,600 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 01:52:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:21,606 INFO L225 Difference]: With dead ends: 7529 [2022-01-11 01:52:21,606 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:21,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:21,611 INFO L933 BasicCegarLoop]: 2983 mSDtfsCounter, 2966 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:21,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2966 Valid, 2983 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:21,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4700582935877053) internal successors, (5548), 3775 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5548 transitions. [2022-01-11 01:52:21,739 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5548 transitions. Word has length 176 [2022-01-11 01:52:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:21,739 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5548 transitions. [2022-01-11 01:52:21,739 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 01:52:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5548 transitions. [2022-01-11 01:52:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:21,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:21,740 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 01:52:21,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:52:21,740 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:21,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash 285209460, now seen corresponding path program 1 times [2022-01-11 01:52:21,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:21,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247031554] [2022-01-11 01:52:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:21,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:21,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:21,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247031554] [2022-01-11 01:52:21,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247031554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:21,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:21,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:21,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227709011] [2022-01-11 01:52:21,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:21,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:21,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:21,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:21,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:21,786 INFO L87 Difference]: Start difference. First operand 3776 states and 5548 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 01:52:21,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:21,880 INFO L93 Difference]: Finished difference Result 7528 states and 11058 transitions. [2022-01-11 01:52:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:21,881 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 01:52:21,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:21,887 INFO L225 Difference]: With dead ends: 7528 [2022-01-11 01:52:21,887 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:21,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:21,894 INFO L933 BasicCegarLoop]: 2978 mSDtfsCounter, 2960 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:21,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2960 Valid, 2978 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:21,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:21,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:21,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4679385267620562) internal successors, (5540), 3775 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5540 transitions. [2022-01-11 01:52:21,999 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5540 transitions. Word has length 176 [2022-01-11 01:52:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:21,999 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5540 transitions. [2022-01-11 01:52:21,999 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 01:52:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5540 transitions. [2022-01-11 01:52:22,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:22,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:22,001 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 01:52:22,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:52:22,001 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:22,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:22,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1044193620, now seen corresponding path program 1 times [2022-01-11 01:52:22,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:22,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453810880] [2022-01-11 01:52:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:22,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:22,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:22,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453810880] [2022-01-11 01:52:22,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453810880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:22,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:22,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:22,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736099370] [2022-01-11 01:52:22,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:22,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:22,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:22,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:22,043 INFO L87 Difference]: Start difference. First operand 3776 states and 5540 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 01:52:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:22,167 INFO L93 Difference]: Finished difference Result 7527 states and 11041 transitions. [2022-01-11 01:52:22,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:22,169 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 01:52:22,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:22,175 INFO L225 Difference]: With dead ends: 7527 [2022-01-11 01:52:22,175 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:22,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:22,180 INFO L933 BasicCegarLoop]: 2973 mSDtfsCounter, 2954 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2954 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:22,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2954 Valid, 2973 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.465818759936407) internal successors, (5532), 3775 states have internal predecessors, (5532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:22,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5532 transitions. [2022-01-11 01:52:22,290 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5532 transitions. Word has length 176 [2022-01-11 01:52:22,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:22,291 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5532 transitions. [2022-01-11 01:52:22,291 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 01:52:22,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5532 transitions. [2022-01-11 01:52:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:22,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:22,292 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 01:52:22,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:52:22,292 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:22,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1068676980, now seen corresponding path program 1 times [2022-01-11 01:52:22,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:22,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945740490] [2022-01-11 01:52:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:22,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:22,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:22,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945740490] [2022-01-11 01:52:22,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945740490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:22,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:22,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:22,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987569365] [2022-01-11 01:52:22,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:22,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:22,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:22,351 INFO L87 Difference]: Start difference. First operand 3776 states and 5532 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 01:52:22,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:22,451 INFO L93 Difference]: Finished difference Result 7526 states and 11024 transitions. [2022-01-11 01:52:22,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:22,452 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 01:52:22,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:22,458 INFO L225 Difference]: With dead ends: 7526 [2022-01-11 01:52:22,458 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:22,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:22,464 INFO L933 BasicCegarLoop]: 2968 mSDtfsCounter, 2948 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:22,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2948 Valid, 2968 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:22,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4636989931107578) internal successors, (5524), 3775 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5524 transitions. [2022-01-11 01:52:22,577 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5524 transitions. Word has length 176 [2022-01-11 01:52:22,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:22,577 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5524 transitions. [2022-01-11 01:52:22,577 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 01:52:22,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5524 transitions. [2022-01-11 01:52:22,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:22,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:22,578 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 01:52:22,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:52:22,579 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:22,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:22,579 INFO L85 PathProgramCache]: Analyzing trace with hash -870195884, now seen corresponding path program 1 times [2022-01-11 01:52:22,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:22,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377619504] [2022-01-11 01:52:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:22,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:22,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:22,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377619504] [2022-01-11 01:52:22,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377619504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:22,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:22,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:22,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161065899] [2022-01-11 01:52:22,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:22,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:22,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:22,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:22,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:22,649 INFO L87 Difference]: Start difference. First operand 3776 states and 5524 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 01:52:22,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:22,754 INFO L93 Difference]: Finished difference Result 7524 states and 11005 transitions. [2022-01-11 01:52:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:22,755 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 01:52:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:22,761 INFO L225 Difference]: With dead ends: 7524 [2022-01-11 01:52:22,762 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:22,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:22,769 INFO L933 BasicCegarLoop]: 2963 mSDtfsCounter, 2941 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2941 SdHoareTripleChecker+Valid, 2963 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:22,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2941 Valid, 2963 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:22,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:22,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4615792262851086) internal successors, (5516), 3775 states have internal predecessors, (5516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5516 transitions. [2022-01-11 01:52:22,875 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5516 transitions. Word has length 176 [2022-01-11 01:52:22,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:22,875 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5516 transitions. [2022-01-11 01:52:22,875 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 01:52:22,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5516 transitions. [2022-01-11 01:52:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:22,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:22,876 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 01:52:22,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:52:22,877 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1273035572, now seen corresponding path program 1 times [2022-01-11 01:52:22,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:22,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142759556] [2022-01-11 01:52:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:22,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:22,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:22,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142759556] [2022-01-11 01:52:22,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142759556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:22,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:22,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:22,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450499445] [2022-01-11 01:52:22,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:22,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:22,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:22,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:22,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:22,927 INFO L87 Difference]: Start difference. First operand 3776 states and 5516 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 01:52:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:23,063 INFO L93 Difference]: Finished difference Result 7523 states and 10988 transitions. [2022-01-11 01:52:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:23,063 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 01:52:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:23,069 INFO L225 Difference]: With dead ends: 7523 [2022-01-11 01:52:23,069 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:23,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:23,074 INFO L933 BasicCegarLoop]: 2958 mSDtfsCounter, 2935 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2935 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:23,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2935 Valid, 2958 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4594594594594594) internal successors, (5508), 3775 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5508 transitions. [2022-01-11 01:52:23,231 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5508 transitions. Word has length 176 [2022-01-11 01:52:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:23,232 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5508 transitions. [2022-01-11 01:52:23,232 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 01:52:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5508 transitions. [2022-01-11 01:52:23,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:23,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:23,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:52:23,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:52:23,234 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:23,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:23,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1428774572, now seen corresponding path program 1 times [2022-01-11 01:52:23,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:23,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842134781] [2022-01-11 01:52:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:23,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:23,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:23,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842134781] [2022-01-11 01:52:23,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842134781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:23,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:23,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:23,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455634460] [2022-01-11 01:52:23,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:23,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:23,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:23,302 INFO L87 Difference]: Start difference. First operand 3776 states and 5508 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 01:52:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:23,449 INFO L93 Difference]: Finished difference Result 7522 states and 10971 transitions. [2022-01-11 01:52:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:23,450 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 01:52:23,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:23,456 INFO L225 Difference]: With dead ends: 7522 [2022-01-11 01:52:23,456 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:23,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:23,461 INFO L933 BasicCegarLoop]: 2953 mSDtfsCounter, 2929 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2929 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:23,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2929 Valid, 2953 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:23,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:23,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4573396926338102) internal successors, (5500), 3775 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5500 transitions. [2022-01-11 01:52:23,576 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5500 transitions. Word has length 176 [2022-01-11 01:52:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:23,577 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5500 transitions. [2022-01-11 01:52:23,577 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 01:52:23,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5500 transitions. [2022-01-11 01:52:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:23,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:23,578 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 01:52:23,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:52:23,579 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash 562280244, now seen corresponding path program 1 times [2022-01-11 01:52:23,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:23,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649699681] [2022-01-11 01:52:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:23,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:23,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:23,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649699681] [2022-01-11 01:52:23,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649699681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:23,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:23,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:23,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808629276] [2022-01-11 01:52:23,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:23,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:23,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:23,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:23,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:23,629 INFO L87 Difference]: Start difference. First operand 3776 states and 5500 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 01:52:23,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:23,754 INFO L93 Difference]: Finished difference Result 7521 states and 10954 transitions. [2022-01-11 01:52:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:23,754 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 01:52:23,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:23,761 INFO L225 Difference]: With dead ends: 7521 [2022-01-11 01:52:23,761 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:23,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:23,766 INFO L933 BasicCegarLoop]: 2948 mSDtfsCounter, 2923 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2923 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:23,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2923 Valid, 2948 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:23,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.455219925808161) internal successors, (5492), 3775 states have internal predecessors, (5492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5492 transitions. [2022-01-11 01:52:23,883 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5492 transitions. Word has length 176 [2022-01-11 01:52:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:23,883 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5492 transitions. [2022-01-11 01:52:23,883 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 01:52:23,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5492 transitions. [2022-01-11 01:52:23,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:23,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:23,884 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 01:52:23,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:52:23,884 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:23,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2011981140, now seen corresponding path program 1 times [2022-01-11 01:52:23,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:23,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086312593] [2022-01-11 01:52:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:23,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:23,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:23,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086312593] [2022-01-11 01:52:23,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086312593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:23,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:23,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:23,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69323737] [2022-01-11 01:52:23,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:23,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:23,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:23,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:23,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:23,932 INFO L87 Difference]: Start difference. First operand 3776 states and 5492 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 01:52:24,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:24,071 INFO L93 Difference]: Finished difference Result 7520 states and 10937 transitions. [2022-01-11 01:52:24,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:24,072 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 01:52:24,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:24,080 INFO L225 Difference]: With dead ends: 7520 [2022-01-11 01:52:24,080 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:24,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:24,086 INFO L933 BasicCegarLoop]: 2943 mSDtfsCounter, 2917 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:24,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2917 Valid, 2943 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:24,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:24,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4531001589825119) internal successors, (5484), 3775 states have internal predecessors, (5484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:24,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5484 transitions. [2022-01-11 01:52:24,275 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5484 transitions. Word has length 176 [2022-01-11 01:52:24,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:24,276 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5484 transitions. [2022-01-11 01:52:24,276 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 01:52:24,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5484 transitions. [2022-01-11 01:52:24,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:24,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:24,277 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 01:52:24,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:52:24,278 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:24,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:24,278 INFO L85 PathProgramCache]: Analyzing trace with hash 950367028, now seen corresponding path program 1 times [2022-01-11 01:52:24,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:24,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704395854] [2022-01-11 01:52:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:24,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:24,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:24,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704395854] [2022-01-11 01:52:24,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704395854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:24,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:24,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:24,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795658375] [2022-01-11 01:52:24,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:24,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:24,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:24,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:24,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:24,325 INFO L87 Difference]: Start difference. First operand 3776 states and 5484 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 01:52:24,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:24,448 INFO L93 Difference]: Finished difference Result 7519 states and 10920 transitions. [2022-01-11 01:52:24,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:24,449 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 01:52:24,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:24,455 INFO L225 Difference]: With dead ends: 7519 [2022-01-11 01:52:24,456 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:24,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:24,462 INFO L933 BasicCegarLoop]: 2938 mSDtfsCounter, 2911 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2911 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:24,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2911 Valid, 2938 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:24,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4509803921568627) internal successors, (5476), 3775 states have internal predecessors, (5476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5476 transitions. [2022-01-11 01:52:24,621 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5476 transitions. Word has length 176 [2022-01-11 01:52:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:24,621 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5476 transitions. [2022-01-11 01:52:24,622 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 01:52:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5476 transitions. [2022-01-11 01:52:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:24,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:24,622 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 01:52:24,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:52:24,623 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:24,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1470310740, now seen corresponding path program 1 times [2022-01-11 01:52:24,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:24,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518610554] [2022-01-11 01:52:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:24,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:24,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:24,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518610554] [2022-01-11 01:52:24,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518610554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:24,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:24,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:24,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701924462] [2022-01-11 01:52:24,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:24,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:24,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:24,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:24,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:24,678 INFO L87 Difference]: Start difference. First operand 3776 states and 5476 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 01:52:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:24,829 INFO L93 Difference]: Finished difference Result 7518 states and 10903 transitions. [2022-01-11 01:52:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:24,830 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 01:52:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:24,835 INFO L225 Difference]: With dead ends: 7518 [2022-01-11 01:52:24,835 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:24,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:24,838 INFO L933 BasicCegarLoop]: 2933 mSDtfsCounter, 2905 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2905 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:24,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2905 Valid, 2933 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:24,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:24,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4488606253312135) internal successors, (5468), 3775 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5468 transitions. [2022-01-11 01:52:24,966 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5468 transitions. Word has length 176 [2022-01-11 01:52:24,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:24,966 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5468 transitions. [2022-01-11 01:52:24,970 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 01:52:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5468 transitions. [2022-01-11 01:52:24,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:24,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:24,971 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 01:52:24,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:52:24,971 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:24,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash -452579532, now seen corresponding path program 1 times [2022-01-11 01:52:24,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:24,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762861136] [2022-01-11 01:52:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:24,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:25,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:25,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:25,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762861136] [2022-01-11 01:52:25,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762861136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:25,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:25,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:25,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374161277] [2022-01-11 01:52:25,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:25,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:25,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:25,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:25,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:25,013 INFO L87 Difference]: Start difference. First operand 3776 states and 5468 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 01:52:25,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:25,155 INFO L93 Difference]: Finished difference Result 7517 states and 10886 transitions. [2022-01-11 01:52:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:25,156 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 01:52:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:25,162 INFO L225 Difference]: With dead ends: 7517 [2022-01-11 01:52:25,162 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:25,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:25,167 INFO L933 BasicCegarLoop]: 2896 mSDtfsCounter, 2741 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2741 SdHoareTripleChecker+Valid, 3034 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 01:52:25,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2741 Valid, 3034 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:25,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.43879173290938) internal successors, (5430), 3775 states have internal predecessors, (5430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5430 transitions. [2022-01-11 01:52:25,327 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5430 transitions. Word has length 176 [2022-01-11 01:52:25,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:25,327 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5430 transitions. [2022-01-11 01:52:25,328 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 01:52:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5430 transitions. [2022-01-11 01:52:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:25,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:25,329 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 01:52:25,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:52:25,329 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:25,329 INFO L85 PathProgramCache]: Analyzing trace with hash -676603693, now seen corresponding path program 1 times [2022-01-11 01:52:25,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:25,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229995546] [2022-01-11 01:52:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:25,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:25,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:25,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229995546] [2022-01-11 01:52:25,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229995546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:25,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:25,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:25,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639720005] [2022-01-11 01:52:25,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:25,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:25,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:25,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:25,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:25,371 INFO L87 Difference]: Start difference. First operand 3776 states and 5430 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 01:52:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:25,565 INFO L93 Difference]: Finished difference Result 7516 states and 10809 transitions. [2022-01-11 01:52:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:25,566 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 01:52:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:25,573 INFO L225 Difference]: With dead ends: 7516 [2022-01-11 01:52:25,573 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:25,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:25,578 INFO L933 BasicCegarLoop]: 2875 mSDtfsCounter, 2720 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2720 SdHoareTripleChecker+Valid, 3012 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 01:52:25,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2720 Valid, 3012 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:25,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4287228404875463) internal successors, (5392), 3775 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:25,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5392 transitions. [2022-01-11 01:52:25,750 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5392 transitions. Word has length 176 [2022-01-11 01:52:25,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:25,750 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5392 transitions. [2022-01-11 01:52:25,750 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 01:52:25,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5392 transitions. [2022-01-11 01:52:25,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:25,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:25,751 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 01:52:25,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:52:25,751 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash 289541490, now seen corresponding path program 1 times [2022-01-11 01:52:25,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:25,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771698075] [2022-01-11 01:52:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:25,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:25,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:25,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771698075] [2022-01-11 01:52:25,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771698075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:25,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:25,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:25,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604814955] [2022-01-11 01:52:25,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:25,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:25,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:25,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:25,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:25,788 INFO L87 Difference]: Start difference. First operand 3776 states and 5392 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 01:52:25,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:25,935 INFO L93 Difference]: Finished difference Result 7515 states and 10732 transitions. [2022-01-11 01:52:25,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:25,936 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 01:52:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:25,943 INFO L225 Difference]: With dead ends: 7515 [2022-01-11 01:52:25,943 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:25,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:25,947 INFO L933 BasicCegarLoop]: 2854 mSDtfsCounter, 2699 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2699 SdHoareTripleChecker+Valid, 2990 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 01:52:25,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2699 Valid, 2990 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:26,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4186539480657128) internal successors, (5354), 3775 states have internal predecessors, (5354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5354 transitions. [2022-01-11 01:52:26,105 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5354 transitions. Word has length 176 [2022-01-11 01:52:26,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:26,105 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5354 transitions. [2022-01-11 01:52:26,105 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 01:52:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5354 transitions. [2022-01-11 01:52:26,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:26,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:26,106 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 01:52:26,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:52:26,106 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:26,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:26,107 INFO L85 PathProgramCache]: Analyzing trace with hash 127845777, now seen corresponding path program 1 times [2022-01-11 01:52:26,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:26,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534705088] [2022-01-11 01:52:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:26,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:26,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:26,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534705088] [2022-01-11 01:52:26,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534705088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:26,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:26,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:26,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968012261] [2022-01-11 01:52:26,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:26,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:26,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:26,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:26,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:26,142 INFO L87 Difference]: Start difference. First operand 3776 states and 5354 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 01:52:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:26,293 INFO L93 Difference]: Finished difference Result 7514 states and 10655 transitions. [2022-01-11 01:52:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:26,293 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 01:52:26,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:26,300 INFO L225 Difference]: With dead ends: 7514 [2022-01-11 01:52:26,300 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:26,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:26,304 INFO L933 BasicCegarLoop]: 2833 mSDtfsCounter, 2678 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 2968 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 01:52:26,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2678 Valid, 2968 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:26,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.4085850556438793) internal successors, (5316), 3775 states have internal predecessors, (5316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5316 transitions. [2022-01-11 01:52:26,435 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5316 transitions. Word has length 176 [2022-01-11 01:52:26,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:26,435 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5316 transitions. [2022-01-11 01:52:26,436 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 01:52:26,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5316 transitions. [2022-01-11 01:52:26,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:26,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:26,436 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 01:52:26,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:52:26,437 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:26,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:26,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1067440304, now seen corresponding path program 1 times [2022-01-11 01:52:26,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:26,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562665267] [2022-01-11 01:52:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:26,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:26,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:26,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562665267] [2022-01-11 01:52:26,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562665267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:26,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:26,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:26,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404844488] [2022-01-11 01:52:26,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:26,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:26,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:26,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:26,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:26,478 INFO L87 Difference]: Start difference. First operand 3776 states and 5316 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 01:52:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:26,634 INFO L93 Difference]: Finished difference Result 7513 states and 10578 transitions. [2022-01-11 01:52:26,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:26,634 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 01:52:26,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:26,640 INFO L225 Difference]: With dead ends: 7513 [2022-01-11 01:52:26,641 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:26,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:26,645 INFO L933 BasicCegarLoop]: 2812 mSDtfsCounter, 2657 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2657 SdHoareTripleChecker+Valid, 2946 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 01:52:26,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2657 Valid, 2946 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:26,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.3985161632220455) internal successors, (5278), 3775 states have internal predecessors, (5278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5278 transitions. [2022-01-11 01:52:26,802 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5278 transitions. Word has length 176 [2022-01-11 01:52:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:26,802 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5278 transitions. [2022-01-11 01:52:26,802 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 01:52:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5278 transitions. [2022-01-11 01:52:26,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:26,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:26,803 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 01:52:26,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:52:26,803 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:26,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:26,804 INFO L85 PathProgramCache]: Analyzing trace with hash -666149041, now seen corresponding path program 1 times [2022-01-11 01:52:26,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:26,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776898832] [2022-01-11 01:52:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:26,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:26,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:26,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776898832] [2022-01-11 01:52:26,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776898832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:26,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:26,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:26,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519358441] [2022-01-11 01:52:26,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:26,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:26,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:26,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:26,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:26,845 INFO L87 Difference]: Start difference. First operand 3776 states and 5278 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 01:52:27,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:27,006 INFO L93 Difference]: Finished difference Result 7512 states and 10501 transitions. [2022-01-11 01:52:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:27,007 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 01:52:27,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:27,012 INFO L225 Difference]: With dead ends: 7512 [2022-01-11 01:52:27,012 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:27,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:27,017 INFO L933 BasicCegarLoop]: 2791 mSDtfsCounter, 2636 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2636 SdHoareTripleChecker+Valid, 2924 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 01:52:27,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2636 Valid, 2924 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:27,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:27,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.388447270800212) internal successors, (5240), 3775 states have internal predecessors, (5240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5240 transitions. [2022-01-11 01:52:27,157 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5240 transitions. Word has length 176 [2022-01-11 01:52:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:27,157 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5240 transitions. [2022-01-11 01:52:27,157 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 01:52:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5240 transitions. [2022-01-11 01:52:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:27,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:27,158 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 01:52:27,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:52:27,158 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash -954527506, now seen corresponding path program 1 times [2022-01-11 01:52:27,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:27,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167229076] [2022-01-11 01:52:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:27,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:27,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:27,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167229076] [2022-01-11 01:52:27,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167229076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:27,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:27,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:27,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663325146] [2022-01-11 01:52:27,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:27,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:27,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:27,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:27,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:27,213 INFO L87 Difference]: Start difference. First operand 3776 states and 5240 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 01:52:27,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:27,408 INFO L93 Difference]: Finished difference Result 7511 states and 10424 transitions. [2022-01-11 01:52:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:27,408 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 01:52:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:27,412 INFO L225 Difference]: With dead ends: 7511 [2022-01-11 01:52:27,412 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:27,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:27,416 INFO L933 BasicCegarLoop]: 2770 mSDtfsCounter, 2615 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2615 SdHoareTripleChecker+Valid, 2902 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 01:52:27,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2615 Valid, 2902 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:27,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.3783783783783783) internal successors, (5202), 3775 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:27,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5202 transitions. [2022-01-11 01:52:27,556 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5202 transitions. Word has length 176 [2022-01-11 01:52:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:27,556 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5202 transitions. [2022-01-11 01:52:27,557 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 01:52:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5202 transitions. [2022-01-11 01:52:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:27,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:27,557 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 01:52:27,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 01:52:27,558 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:27,558 INFO L85 PathProgramCache]: Analyzing trace with hash -741530099, now seen corresponding path program 1 times [2022-01-11 01:52:27,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:27,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146384311] [2022-01-11 01:52:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:27,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:27,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:27,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146384311] [2022-01-11 01:52:27,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146384311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:27,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:27,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:27,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316592631] [2022-01-11 01:52:27,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:27,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:27,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:27,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:27,595 INFO L87 Difference]: Start difference. First operand 3776 states and 5202 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 01:52:27,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:27,791 INFO L93 Difference]: Finished difference Result 7509 states and 10345 transitions. [2022-01-11 01:52:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:27,791 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 01:52:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:27,796 INFO L225 Difference]: With dead ends: 7509 [2022-01-11 01:52:27,797 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:27,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:27,801 INFO L933 BasicCegarLoop]: 2749 mSDtfsCounter, 2593 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 2880 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 01:52:27,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2593 Valid, 2880 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:27,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:27,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.3683094859565448) internal successors, (5164), 3775 states have internal predecessors, (5164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5164 transitions. [2022-01-11 01:52:27,991 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5164 transitions. Word has length 176 [2022-01-11 01:52:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:27,991 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5164 transitions. [2022-01-11 01:52:27,992 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 01:52:27,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5164 transitions. [2022-01-11 01:52:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:27,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:27,993 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 01:52:27,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 01:52:27,993 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1767737772, now seen corresponding path program 1 times [2022-01-11 01:52:27,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:27,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330991885] [2022-01-11 01:52:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:27,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:28,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:28,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330991885] [2022-01-11 01:52:28,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330991885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:28,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:28,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:28,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612250438] [2022-01-11 01:52:28,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:28,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:28,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:28,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:28,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:28,036 INFO L87 Difference]: Start difference. First operand 3776 states and 5164 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 01:52:28,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:28,270 INFO L93 Difference]: Finished difference Result 7507 states and 10266 transitions. [2022-01-11 01:52:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:28,271 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 01:52:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:28,275 INFO L225 Difference]: With dead ends: 7507 [2022-01-11 01:52:28,275 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:28,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:28,280 INFO L933 BasicCegarLoop]: 2728 mSDtfsCounter, 2571 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 2858 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 01:52:28,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2571 Valid, 2858 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:28,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:28,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.3582405935347113) internal successors, (5126), 3775 states have internal predecessors, (5126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:28,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5126 transitions. [2022-01-11 01:52:28,478 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5126 transitions. Word has length 176 [2022-01-11 01:52:28,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:28,478 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5126 transitions. [2022-01-11 01:52:28,478 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 01:52:28,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5126 transitions. [2022-01-11 01:52:28,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:28,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:28,479 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 01:52:28,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 01:52:28,479 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:28,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:28,479 INFO L85 PathProgramCache]: Analyzing trace with hash -272368693, now seen corresponding path program 1 times [2022-01-11 01:52:28,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:28,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923871646] [2022-01-11 01:52:28,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:28,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:28,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:28,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923871646] [2022-01-11 01:52:28,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923871646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:28,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:28,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:28,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545543752] [2022-01-11 01:52:28,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:28,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:28,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:28,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:28,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:28,514 INFO L87 Difference]: Start difference. First operand 3776 states and 5126 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 01:52:28,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:28,730 INFO L93 Difference]: Finished difference Result 7506 states and 10189 transitions. [2022-01-11 01:52:28,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:28,731 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 01:52:28,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:28,735 INFO L225 Difference]: With dead ends: 7506 [2022-01-11 01:52:28,735 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:28,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:28,739 INFO L933 BasicCegarLoop]: 2707 mSDtfsCounter, 2550 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2550 SdHoareTripleChecker+Valid, 2836 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 01:52:28,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2550 Valid, 2836 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:28,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.3481717011128775) internal successors, (5088), 3775 states have internal predecessors, (5088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:28,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5088 transitions. [2022-01-11 01:52:28,919 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5088 transitions. Word has length 176 [2022-01-11 01:52:28,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:28,919 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5088 transitions. [2022-01-11 01:52:28,919 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 01:52:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5088 transitions. [2022-01-11 01:52:28,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:28,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:28,920 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 01:52:28,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 01:52:28,920 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:28,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1788217578, now seen corresponding path program 1 times [2022-01-11 01:52:28,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:28,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877215168] [2022-01-11 01:52:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:28,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:28,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:28,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877215168] [2022-01-11 01:52:28,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877215168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:28,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:28,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:28,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009320347] [2022-01-11 01:52:28,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:28,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:28,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:28,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:28,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:28,959 INFO L87 Difference]: Start difference. First operand 3776 states and 5088 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 01:52:29,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:29,157 INFO L93 Difference]: Finished difference Result 7505 states and 10112 transitions. [2022-01-11 01:52:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:29,157 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 01:52:29,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:29,162 INFO L225 Difference]: With dead ends: 7505 [2022-01-11 01:52:29,162 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:29,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:29,167 INFO L933 BasicCegarLoop]: 2686 mSDtfsCounter, 2529 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 2814 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 01:52:29,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2529 Valid, 2814 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:29,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.338102808691044) internal successors, (5050), 3775 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:29,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5050 transitions. [2022-01-11 01:52:29,324 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5050 transitions. Word has length 176 [2022-01-11 01:52:29,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:29,324 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5050 transitions. [2022-01-11 01:52:29,324 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 01:52:29,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5050 transitions. [2022-01-11 01:52:29,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:29,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:29,325 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 01:52:29,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 01:52:29,325 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:29,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:29,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1393931895, now seen corresponding path program 1 times [2022-01-11 01:52:29,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:29,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645109089] [2022-01-11 01:52:29,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:29,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:29,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:29,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645109089] [2022-01-11 01:52:29,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645109089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:29,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:29,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:29,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728057997] [2022-01-11 01:52:29,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:29,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:29,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:29,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:29,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:29,379 INFO L87 Difference]: Start difference. First operand 3776 states and 5050 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 01:52:29,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:29,567 INFO L93 Difference]: Finished difference Result 7504 states and 10035 transitions. [2022-01-11 01:52:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:29,568 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 01:52:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:29,571 INFO L225 Difference]: With dead ends: 7504 [2022-01-11 01:52:29,571 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 01:52:29,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:29,575 INFO L933 BasicCegarLoop]: 2665 mSDtfsCounter, 2508 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2508 SdHoareTripleChecker+Valid, 2792 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 01:52:29,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2508 Valid, 2792 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:29,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 01:52:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2022-01-11 01:52:29,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3774 states have (on average 1.3280339162692103) internal successors, (5012), 3775 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:29,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5012 transitions. [2022-01-11 01:52:29,753 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5012 transitions. Word has length 176 [2022-01-11 01:52:29,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:29,753 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5012 transitions. [2022-01-11 01:52:29,753 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 01:52:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5012 transitions. [2022-01-11 01:52:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:29,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:29,754 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 01:52:29,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 01:52:29,754 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:29,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:29,754 INFO L85 PathProgramCache]: Analyzing trace with hash -447089368, now seen corresponding path program 1 times [2022-01-11 01:52:29,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:29,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721601863] [2022-01-11 01:52:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:29,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:29,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:29,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721601863] [2022-01-11 01:52:29,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721601863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:29,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:29,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:52:29,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765439820] [2022-01-11 01:52:29,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:29,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:52:29,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:29,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:52:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:52:29,818 INFO L87 Difference]: Start difference. First operand 3776 states and 5012 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 01:52:30,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:30,296 INFO L93 Difference]: Finished difference Result 8547 states and 11433 transitions. [2022-01-11 01:52:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:52:30,297 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 01:52:30,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:30,303 INFO L225 Difference]: With dead ends: 8547 [2022-01-11 01:52:30,303 INFO L226 Difference]: Without dead ends: 4826 [2022-01-11 01:52:30,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:52:30,308 INFO L933 BasicCegarLoop]: 2864 mSDtfsCounter, 7739 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7739 SdHoareTripleChecker+Valid, 5026 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 01:52:30,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7739 Valid, 5026 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:52:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2022-01-11 01:52:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 3782. [2022-01-11 01:52:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 3780 states have (on average 1.3195767195767196) internal successors, (4988), 3781 states have internal predecessors, (4988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 4988 transitions. [2022-01-11 01:52:30,531 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 4988 transitions. Word has length 176 [2022-01-11 01:52:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:30,531 INFO L470 AbstractCegarLoop]: Abstraction has 3782 states and 4988 transitions. [2022-01-11 01:52:30,531 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 01:52:30,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 4988 transitions. [2022-01-11 01:52:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:30,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:30,532 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 01:52:30,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 01:52:30,532 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:30,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash -16172567, now seen corresponding path program 1 times [2022-01-11 01:52:30,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:30,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968230668] [2022-01-11 01:52:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:30,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:30,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:30,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968230668] [2022-01-11 01:52:30,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968230668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:30,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:30,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:52:30,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335096274] [2022-01-11 01:52:30,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:30,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:52:30,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:30,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:52:30,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:52:30,587 INFO L87 Difference]: Start difference. First operand 3782 states and 4988 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 01:52:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:31,022 INFO L93 Difference]: Finished difference Result 8915 states and 11818 transitions. [2022-01-11 01:52:31,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:52:31,022 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 01:52:31,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:31,028 INFO L225 Difference]: With dead ends: 8915 [2022-01-11 01:52:31,028 INFO L226 Difference]: Without dead ends: 5202 [2022-01-11 01:52:31,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:52:31,031 INFO L933 BasicCegarLoop]: 2812 mSDtfsCounter, 7365 mSDsluCounter, 2944 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7365 SdHoareTripleChecker+Valid, 5756 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 01:52:31,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7365 Valid, 5756 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:52:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5202 states. [2022-01-11 01:52:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5202 to 3788. [2022-01-11 01:52:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 3786 states have (on average 1.311146328578975) internal successors, (4964), 3787 states have internal predecessors, (4964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 4964 transitions. [2022-01-11 01:52:31,242 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 4964 transitions. Word has length 176 [2022-01-11 01:52:31,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:31,242 INFO L470 AbstractCegarLoop]: Abstraction has 3788 states and 4964 transitions. [2022-01-11 01:52:31,242 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 01:52:31,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 4964 transitions. [2022-01-11 01:52:31,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:31,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:31,243 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 01:52:31,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 01:52:31,243 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:31,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash -839854038, now seen corresponding path program 1 times [2022-01-11 01:52:31,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:31,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993427042] [2022-01-11 01:52:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:31,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:31,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:31,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993427042] [2022-01-11 01:52:31,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993427042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:31,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:31,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:52:31,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429645304] [2022-01-11 01:52:31,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:31,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:52:31,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:31,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:52:31,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:52:31,292 INFO L87 Difference]: Start difference. First operand 3788 states and 4964 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 01:52:31,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:31,761 INFO L93 Difference]: Finished difference Result 9108 states and 11976 transitions. [2022-01-11 01:52:31,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:52:31,762 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 01:52:31,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:31,768 INFO L225 Difference]: With dead ends: 9108 [2022-01-11 01:52:31,768 INFO L226 Difference]: Without dead ends: 5396 [2022-01-11 01:52:31,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:52:31,773 INFO L933 BasicCegarLoop]: 2778 mSDtfsCounter, 7163 mSDsluCounter, 3297 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7163 SdHoareTripleChecker+Valid, 6075 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 01:52:31,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7163 Valid, 6075 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:52:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2022-01-11 01:52:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 3794. [2022-01-11 01:52:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3794 states, 3792 states have (on average 1.3027426160337552) internal successors, (4940), 3793 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:32,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 4940 transitions. [2022-01-11 01:52:32,119 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 4940 transitions. Word has length 176 [2022-01-11 01:52:32,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:32,120 INFO L470 AbstractCegarLoop]: Abstraction has 3794 states and 4940 transitions. [2022-01-11 01:52:32,120 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 01:52:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 4940 transitions. [2022-01-11 01:52:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:32,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:32,121 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 01:52:32,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-11 01:52:32,121 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:32,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:32,121 INFO L85 PathProgramCache]: Analyzing trace with hash -780633301, now seen corresponding path program 1 times [2022-01-11 01:52:32,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:32,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407401816] [2022-01-11 01:52:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:32,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:32,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:32,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407401816] [2022-01-11 01:52:32,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407401816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:32,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:32,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:32,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714895940] [2022-01-11 01:52:32,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:32,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:32,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:32,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:32,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:32,168 INFO L87 Difference]: Start difference. First operand 3794 states and 4940 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 01:52:32,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:32,667 INFO L93 Difference]: Finished difference Result 10873 states and 14149 transitions. [2022-01-11 01:52:32,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:32,667 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 01:52:32,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:32,676 INFO L225 Difference]: With dead ends: 10873 [2022-01-11 01:52:32,676 INFO L226 Difference]: Without dead ends: 7178 [2022-01-11 01:52:32,681 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 01:52:32,681 INFO L933 BasicCegarLoop]: 2618 mSDtfsCounter, 2366 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2366 SdHoareTripleChecker+Valid, 4997 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:32,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2366 Valid, 4997 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:52:32,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2022-01-11 01:52:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 7170. [2022-01-11 01:52:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7170 states, 7168 states have (on average 1.2971540178571428) internal successors, (9298), 7169 states have internal predecessors, (9298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:33,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 9298 transitions. [2022-01-11 01:52:33,147 INFO L78 Accepts]: Start accepts. Automaton has 7170 states and 9298 transitions. Word has length 176 [2022-01-11 01:52:33,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:33,148 INFO L470 AbstractCegarLoop]: Abstraction has 7170 states and 9298 transitions. [2022-01-11 01:52:33,148 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 01:52:33,148 INFO L276 IsEmpty]: Start isEmpty. Operand 7170 states and 9298 transitions. [2022-01-11 01:52:33,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:33,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:33,148 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 01:52:33,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-11 01:52:33,149 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:33,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:33,149 INFO L85 PathProgramCache]: Analyzing trace with hash 425960810, now seen corresponding path program 1 times [2022-01-11 01:52:33,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:33,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032745133] [2022-01-11 01:52:33,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:33,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:33,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:33,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032745133] [2022-01-11 01:52:33,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032745133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:33,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:33,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:33,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143674285] [2022-01-11 01:52:33,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:33,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:33,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:33,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:33,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:33,192 INFO L87 Difference]: Start difference. First operand 7170 states and 9298 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 01:52:34,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:34,115 INFO L93 Difference]: Finished difference Result 20760 states and 26900 transitions. [2022-01-11 01:52:34,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:34,115 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 01:52:34,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:34,129 INFO L225 Difference]: With dead ends: 20760 [2022-01-11 01:52:34,129 INFO L226 Difference]: Without dead ends: 13702 [2022-01-11 01:52:34,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:34,134 INFO L933 BasicCegarLoop]: 2615 mSDtfsCounter, 2351 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 4994 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:34,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2351 Valid, 4994 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:52:34,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13702 states. [2022-01-11 01:52:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13702 to 13690. [2022-01-11 01:52:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13690 states, 13688 states have (on average 1.2912039742840444) internal successors, (17674), 13689 states have internal predecessors, (17674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13690 states to 13690 states and 17674 transitions. [2022-01-11 01:52:35,013 INFO L78 Accepts]: Start accepts. Automaton has 13690 states and 17674 transitions. Word has length 176 [2022-01-11 01:52:35,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:35,014 INFO L470 AbstractCegarLoop]: Abstraction has 13690 states and 17674 transitions. [2022-01-11 01:52:35,014 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 01:52:35,014 INFO L276 IsEmpty]: Start isEmpty. Operand 13690 states and 17674 transitions. [2022-01-11 01:52:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:35,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:35,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:52:35,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-11 01:52:35,015 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:35,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash -452659671, now seen corresponding path program 1 times [2022-01-11 01:52:35,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:35,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795237516] [2022-01-11 01:52:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:35,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:35,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:35,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795237516] [2022-01-11 01:52:35,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795237516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:35,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:35,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:52:35,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977194752] [2022-01-11 01:52:35,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:35,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:52:35,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:35,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:52:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:52:35,063 INFO L87 Difference]: Start difference. First operand 13690 states and 17674 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 01:52:36,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:36,894 INFO L93 Difference]: Finished difference Result 36927 states and 47788 transitions. [2022-01-11 01:52:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:52:36,894 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 01:52:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:36,922 INFO L225 Difference]: With dead ends: 36927 [2022-01-11 01:52:36,922 INFO L226 Difference]: Without dead ends: 23353 [2022-01-11 01:52:36,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:52:36,931 INFO L933 BasicCegarLoop]: 2661 mSDtfsCounter, 6743 mSDsluCounter, 9046 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6743 SdHoareTripleChecker+Valid, 11707 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:36,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6743 Valid, 11707 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 01:52:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23353 states. [2022-01-11 01:52:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23353 to 13870. [2022-01-11 01:52:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13870 states, 13868 states have (on average 1.2833141044130372) internal successors, (17797), 13869 states have internal predecessors, (17797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13870 states to 13870 states and 17797 transitions. [2022-01-11 01:52:38,080 INFO L78 Accepts]: Start accepts. Automaton has 13870 states and 17797 transitions. Word has length 176 [2022-01-11 01:52:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:38,081 INFO L470 AbstractCegarLoop]: Abstraction has 13870 states and 17797 transitions. [2022-01-11 01:52:38,081 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 01:52:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 13870 states and 17797 transitions. [2022-01-11 01:52:38,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:38,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:38,082 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 01:52:38,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-11 01:52:38,082 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:38,082 INFO L85 PathProgramCache]: Analyzing trace with hash -698972758, now seen corresponding path program 1 times [2022-01-11 01:52:38,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:38,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230404712] [2022-01-11 01:52:38,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:38,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:38,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:38,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230404712] [2022-01-11 01:52:38,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230404712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:38,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:38,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:52:38,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384123174] [2022-01-11 01:52:38,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:38,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:52:38,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:38,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:52:38,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:52:38,137 INFO L87 Difference]: Start difference. First operand 13870 states and 17797 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 01:52:40,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:40,256 INFO L93 Difference]: Finished difference Result 40566 states and 52276 transitions. [2022-01-11 01:52:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:52:40,258 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 01:52:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:40,294 INFO L225 Difference]: With dead ends: 40566 [2022-01-11 01:52:40,294 INFO L226 Difference]: Without dead ends: 26840 [2022-01-11 01:52:40,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:52:40,305 INFO L933 BasicCegarLoop]: 2571 mSDtfsCounter, 5377 mSDsluCounter, 7302 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5377 SdHoareTripleChecker+Valid, 9873 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 01:52:40,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5377 Valid, 9873 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:52:40,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26840 states. [2022-01-11 01:52:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26840 to 13894. [2022-01-11 01:52:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13894 states, 13892 states have (on average 1.2749784048373165) internal successors, (17712), 13893 states have internal predecessors, (17712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13894 states to 13894 states and 17712 transitions. [2022-01-11 01:52:41,615 INFO L78 Accepts]: Start accepts. Automaton has 13894 states and 17712 transitions. Word has length 176 [2022-01-11 01:52:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:41,615 INFO L470 AbstractCegarLoop]: Abstraction has 13894 states and 17712 transitions. [2022-01-11 01:52:41,615 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 01:52:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 13894 states and 17712 transitions. [2022-01-11 01:52:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:41,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:41,616 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 01:52:41,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-11 01:52:41,616 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1895254059, now seen corresponding path program 1 times [2022-01-11 01:52:41,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:41,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967888440] [2022-01-11 01:52:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:41,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:41,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:41,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967888440] [2022-01-11 01:52:41,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967888440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:41,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:41,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:41,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964089924] [2022-01-11 01:52:41,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:41,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:41,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:41,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:41,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:41,674 INFO L87 Difference]: Start difference. First operand 13894 states and 17712 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 01:52:42,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:42,778 INFO L93 Difference]: Finished difference Result 27761 states and 35383 transitions. [2022-01-11 01:52:42,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:42,779 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 01:52:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:42,797 INFO L225 Difference]: With dead ends: 27761 [2022-01-11 01:52:42,797 INFO L226 Difference]: Without dead ends: 13894 [2022-01-11 01:52:42,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:42,810 INFO L933 BasicCegarLoop]: 2605 mSDtfsCounter, 2471 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2471 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:42,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2471 Valid, 2605 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13894 states. [2022-01-11 01:52:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13894 to 13894. [2022-01-11 01:52:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13894 states, 13892 states have (on average 1.273106824071408) internal successors, (17686), 13893 states have internal predecessors, (17686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13894 states to 13894 states and 17686 transitions. [2022-01-11 01:52:43,960 INFO L78 Accepts]: Start accepts. Automaton has 13894 states and 17686 transitions. Word has length 176 [2022-01-11 01:52:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:43,961 INFO L470 AbstractCegarLoop]: Abstraction has 13894 states and 17686 transitions. [2022-01-11 01:52:43,961 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 01:52:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand 13894 states and 17686 transitions. [2022-01-11 01:52:43,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:43,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:43,961 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 01:52:43,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-11 01:52:43,962 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:43,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2069947476, now seen corresponding path program 1 times [2022-01-11 01:52:43,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:43,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161485709] [2022-01-11 01:52:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:43,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:44,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:44,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161485709] [2022-01-11 01:52:44,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161485709] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:44,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:44,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:44,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096732201] [2022-01-11 01:52:44,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:44,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:44,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:44,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:44,010 INFO L87 Difference]: Start difference. First operand 13894 states and 17686 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 01:52:45,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:45,193 INFO L93 Difference]: Finished difference Result 27746 states and 35316 transitions. [2022-01-11 01:52:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:45,193 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 01:52:45,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:45,213 INFO L225 Difference]: With dead ends: 27746 [2022-01-11 01:52:45,213 INFO L226 Difference]: Without dead ends: 13894 [2022-01-11 01:52:45,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:45,227 INFO L933 BasicCegarLoop]: 2570 mSDtfsCounter, 2310 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:45,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 2692 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:45,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13894 states. [2022-01-11 01:52:46,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13894 to 13894. [2022-01-11 01:52:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13894 states, 13892 states have (on average 1.2672041462712353) internal successors, (17604), 13893 states have internal predecessors, (17604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13894 states to 13894 states and 17604 transitions. [2022-01-11 01:52:46,424 INFO L78 Accepts]: Start accepts. Automaton has 13894 states and 17604 transitions. Word has length 176 [2022-01-11 01:52:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:46,424 INFO L470 AbstractCegarLoop]: Abstraction has 13894 states and 17604 transitions. [2022-01-11 01:52:46,424 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 01:52:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 13894 states and 17604 transitions. [2022-01-11 01:52:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:46,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:46,425 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 01:52:46,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-11 01:52:46,426 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:46,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:46,426 INFO L85 PathProgramCache]: Analyzing trace with hash 186963531, now seen corresponding path program 1 times [2022-01-11 01:52:46,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:46,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002654813] [2022-01-11 01:52:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:46,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:46,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:46,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002654813] [2022-01-11 01:52:46,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002654813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:46,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:46,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:46,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401373417] [2022-01-11 01:52:46,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:46,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:46,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:46,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:46,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:46,479 INFO L87 Difference]: Start difference. First operand 13894 states and 17604 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 01:52:47,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:47,792 INFO L93 Difference]: Finished difference Result 27576 states and 34926 transitions. [2022-01-11 01:52:47,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:47,793 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 01:52:47,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:47,811 INFO L225 Difference]: With dead ends: 27576 [2022-01-11 01:52:47,811 INFO L226 Difference]: Without dead ends: 13726 [2022-01-11 01:52:47,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:47,828 INFO L933 BasicCegarLoop]: 2535 mSDtfsCounter, 2274 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:52:47,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2274 Valid, 2656 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13726 states. [2022-01-11 01:52:49,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13726 to 13726. [2022-01-11 01:52:49,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13726 states, 13724 states have (on average 1.26041970271058) internal successors, (17298), 13725 states have internal predecessors, (17298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13726 states to 13726 states and 17298 transitions. [2022-01-11 01:52:49,044 INFO L78 Accepts]: Start accepts. Automaton has 13726 states and 17298 transitions. Word has length 176 [2022-01-11 01:52:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:49,044 INFO L470 AbstractCegarLoop]: Abstraction has 13726 states and 17298 transitions. [2022-01-11 01:52:49,044 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 01:52:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 13726 states and 17298 transitions. [2022-01-11 01:52:49,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-11 01:52:49,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:49,045 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 01:52:49,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-11 01:52:49,045 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:49,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash -221860694, now seen corresponding path program 1 times [2022-01-11 01:52:49,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:49,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546862161] [2022-01-11 01:52:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:49,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:49,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:49,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546862161] [2022-01-11 01:52:49,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546862161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:49,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:49,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:52:49,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708287673] [2022-01-11 01:52:49,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:49,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:49,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:49,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:49,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:49,094 INFO L87 Difference]: Start difference. First operand 13726 states and 17298 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 01:52:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:51,397 INFO L93 Difference]: Finished difference Result 40745 states and 51343 transitions. [2022-01-11 01:52:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:51,398 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 01:52:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:51,434 INFO L225 Difference]: With dead ends: 40745 [2022-01-11 01:52:51,434 INFO L226 Difference]: Without dead ends: 27069 [2022-01-11 01:52:51,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:51,446 INFO L933 BasicCegarLoop]: 2535 mSDtfsCounter, 2328 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 4845 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 01:52:51,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 4845 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:52:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27069 states. [2022-01-11 01:52:53,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27069 to 26301. [2022-01-11 01:52:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26301 states, 26299 states have (on average 1.256321533138142) internal successors, (33040), 26300 states have internal predecessors, (33040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:52:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26301 states to 26301 states and 33040 transitions. [2022-01-11 01:52:53,859 INFO L78 Accepts]: Start accepts. Automaton has 26301 states and 33040 transitions. Word has length 176 [2022-01-11 01:52:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:52:53,860 INFO L470 AbstractCegarLoop]: Abstraction has 26301 states and 33040 transitions. [2022-01-11 01:52:53,860 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 01:52:53,860 INFO L276 IsEmpty]: Start isEmpty. Operand 26301 states and 33040 transitions. [2022-01-11 01:52:53,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-11 01:52:53,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:52:53,873 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 01:52:53,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-11 01:52:53,874 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:52:53,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:52:53,874 INFO L85 PathProgramCache]: Analyzing trace with hash -302671424, now seen corresponding path program 1 times [2022-01-11 01:52:53,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:52:53,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268899289] [2022-01-11 01:52:53,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:52:53,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:52:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:52:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:52:53,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:52:53,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268899289] [2022-01-11 01:52:53,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268899289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:52:53,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:52:53,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:52:53,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110796276] [2022-01-11 01:52:53,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:52:53,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:52:53,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:52:53,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:52:53,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:53,929 INFO L87 Difference]: Start difference. First operand 26301 states and 33040 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 01:52:58,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:52:58,417 INFO L93 Difference]: Finished difference Result 78297 states and 98435 transitions. [2022-01-11 01:52:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:52:58,418 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 01:52:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:52:58,497 INFO L225 Difference]: With dead ends: 78297 [2022-01-11 01:52:58,498 INFO L226 Difference]: Without dead ends: 52052 [2022-01-11 01:52:58,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:52:58,518 INFO L933 BasicCegarLoop]: 2532 mSDtfsCounter, 2378 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 4842 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 01:52:58,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2378 Valid, 4842 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:52:58,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52052 states. [2022-01-11 01:53:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52052 to 50544. [2022-01-11 01:53:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50544 states, 50542 states have (on average 1.25404613984409) internal successors, (63382), 50543 states have internal predecessors, (63382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:53:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50544 states to 50544 states and 63382 transitions. [2022-01-11 01:53:03,212 INFO L78 Accepts]: Start accepts. Automaton has 50544 states and 63382 transitions. Word has length 286 [2022-01-11 01:53:03,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:53:03,212 INFO L470 AbstractCegarLoop]: Abstraction has 50544 states and 63382 transitions. [2022-01-11 01:53:03,212 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 01:53:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 50544 states and 63382 transitions. [2022-01-11 01:53:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-11 01:53:03,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:53:03,229 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 01:53:03,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-11 01:53:03,230 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:53:03,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:53:03,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1145843327, now seen corresponding path program 1 times [2022-01-11 01:53:03,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:53:03,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134034162] [2022-01-11 01:53:03,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:53:03,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:53:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:53:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:53:03,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:53:03,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134034162] [2022-01-11 01:53:03,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134034162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:53:03,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:53:03,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:53:03,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845717676] [2022-01-11 01:53:03,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:53:03,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:53:03,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:53:03,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:53:03,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:53:03,293 INFO L87 Difference]: Start difference. First operand 50544 states and 63382 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 01:53:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:53:12,189 INFO L93 Difference]: Finished difference Result 145985 states and 184130 transitions. [2022-01-11 01:53:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:53:12,189 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 01:53:12,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:53:12,322 INFO L225 Difference]: With dead ends: 145985 [2022-01-11 01:53:12,322 INFO L226 Difference]: Without dead ends: 95576 [2022-01-11 01:53:12,354 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 01:53:12,354 INFO L933 BasicCegarLoop]: 2507 mSDtfsCounter, 5372 mSDsluCounter, 6733 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5372 SdHoareTripleChecker+Valid, 9240 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 01:53:12,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5372 Valid, 9240 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:53:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95576 states. [2022-01-11 01:53:17,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95576 to 50640. [2022-01-11 01:53:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50640 states, 50638 states have (on average 1.2456455626209566) internal successors, (63077), 50639 states have internal predecessors, (63077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:53:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50640 states to 50640 states and 63077 transitions. [2022-01-11 01:53:17,417 INFO L78 Accepts]: Start accepts. Automaton has 50640 states and 63077 transitions. Word has length 286 [2022-01-11 01:53:17,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:53:17,417 INFO L470 AbstractCegarLoop]: Abstraction has 50640 states and 63077 transitions. [2022-01-11 01:53:17,417 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 01:53:17,418 INFO L276 IsEmpty]: Start isEmpty. Operand 50640 states and 63077 transitions. [2022-01-11 01:53:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-11 01:53:17,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:53:17,433 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 01:53:17,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-11 01:53:17,433 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-11 01:53:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:53:17,433 INFO L85 PathProgramCache]: Analyzing trace with hash -721708479, now seen corresponding path program 1 times [2022-01-11 01:53:17,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:53:17,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904696879] [2022-01-11 01:53:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:53:17,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:53:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:53:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:53:17,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:53:17,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904696879] [2022-01-11 01:53:17,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904696879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:53:17,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:53:17,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:53:17,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035880010] [2022-01-11 01:53:17,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:53:17,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:53:17,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:53:17,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:53:17,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:53:17,485 INFO L87 Difference]: Start difference. First operand 50640 states and 63077 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)