/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 07:42:15,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 07:42:15,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 07:42:15,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 07:42:15,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 07:42:15,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 07:42:15,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 07:42:15,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 07:42:15,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 07:42:15,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 07:42:15,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 07:42:15,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 07:42:15,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 07:42:15,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 07:42:15,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 07:42:15,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 07:42:15,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 07:42:15,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 07:42:15,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 07:42:15,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 07:42:15,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 07:42:15,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 07:42:15,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 07:42:15,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 07:42:15,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 07:42:15,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 07:42:15,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 07:42:15,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 07:42:15,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 07:42:15,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-11 07:42:15,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 07:42:15,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 07:42:15,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 07:42:15,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 07:42:15,461 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 07:42:15,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 07:42:15,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 07:42:15,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 07:42:15,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 07:42:15,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 07:42:15,463 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 07:42:15,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 07:42:15,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 07:42:15,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 07:42:15,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 07:42:15,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 07:42:15,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 07:42:15,464 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 07:42:15,464 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 07:42:15,464 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 07:42:15,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 07:42:15,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 07:42:15,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 07:42:15,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 07:42:15,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 07:42:15,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:42:15,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 07:42:15,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 07:42:15,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 07:42:15,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 07:42:15,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 07:42:15,466 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 07:42:15,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 07:42:15,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 07:42:15,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 07:42:15,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 07:42:15,471 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 07:42:15,471 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 07:42:15,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 07:42:15,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 07:42:15,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 07:42:15,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 07:42:15,748 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 07:42:15,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c [2022-01-11 07:42:15,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c278f1495/d523cf12b0bd43548264f8726f50bb10/FLAG2f75f0cb6 [2022-01-11 07:42:16,287 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 07:42:16,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c [2022-01-11 07:42:16,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c278f1495/d523cf12b0bd43548264f8726f50bb10/FLAG2f75f0cb6 [2022-01-11 07:42:16,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c278f1495/d523cf12b0bd43548264f8726f50bb10 [2022-01-11 07:42:16,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 07:42:16,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 07:42:16,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 07:42:16,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 07:42:16,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 07:42:16,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:42:16" (1/1) ... [2022-01-11 07:42:16,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622d5796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:16, skipping insertion in model container [2022-01-11 07:42:16,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 07:42:16" (1/1) ... [2022-01-11 07:42:16,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 07:42:16,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 07:42:16,845 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.05.cil-1.c[911,924] [2022-01-11 07:42:16,893 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.05.cil-1.c[8416,8429] [2022-01-11 07:42:16,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:42:16,974 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 07:42:16,986 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.05.cil-1.c[911,924] [2022-01-11 07:42:17,006 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.05.cil-1.c[8416,8429] [2022-01-11 07:42:17,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 07:42:17,052 INFO L208 MainTranslator]: Completed translation [2022-01-11 07:42:17,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17 WrapperNode [2022-01-11 07:42:17,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 07:42:17,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 07:42:17,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 07:42:17,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 07:42:17,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17" (1/1) ... [2022-01-11 07:42:17,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17" (1/1) ... [2022-01-11 07:42:17,132 INFO L137 Inliner]: procedures = 66, calls = 76, calls flagged for inlining = 71, calls inlined = 127, statements flattened = 1745 [2022-01-11 07:42:17,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 07:42:17,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 07:42:17,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 07:42:17,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 07:42:17,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17" (1/1) ... [2022-01-11 07:42:17,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17" (1/1) ... [2022-01-11 07:42:17,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17" (1/1) ... [2022-01-11 07:42:17,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17" (1/1) ... [2022-01-11 07:42:17,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17" (1/1) ... [2022-01-11 07:42:17,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17" (1/1) ... [2022-01-11 07:42:17,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17" (1/1) ... [2022-01-11 07:42:17,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 07:42:17,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 07:42:17,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 07:42:17,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 07:42:17,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17" (1/1) ... [2022-01-11 07:42:17,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 07:42:17,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 07:42:17,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 07:42:17,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 07:42:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 07:42:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 07:42:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 07:42:17,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 07:42:17,499 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 07:42:17,500 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 07:42:18,652 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume !(1bv32 == ~q_free~0); [2022-01-11 07:42:18,653 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 07:42:18,653 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 07:42:18,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 07:42:18,665 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-01-11 07:42:18,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:42:18 BoogieIcfgContainer [2022-01-11 07:42:18,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 07:42:18,668 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 07:42:18,668 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 07:42:18,669 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 07:42:18,672 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:42:18" (1/1) ... [2022-01-11 07:42:18,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:42:18 BasicIcfg [2022-01-11 07:42:18,985 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 07:42:18,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 07:42:18,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 07:42:18,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 07:42:18,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 07:42:16" (1/4) ... [2022-01-11 07:42:18,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b2e6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:42:18, skipping insertion in model container [2022-01-11 07:42:18,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 07:42:17" (2/4) ... [2022-01-11 07:42:18,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b2e6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 07:42:18, skipping insertion in model container [2022-01-11 07:42:18,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 07:42:18" (3/4) ... [2022-01-11 07:42:18,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b2e6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 07:42:18, skipping insertion in model container [2022-01-11 07:42:18,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 07:42:18" (4/4) ... [2022-01-11 07:42:18,994 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.05.cil-1.cTransformedIcfg [2022-01-11 07:42:18,999 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 07:42:18,999 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 07:42:19,059 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 07:42:19,067 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 07:42:19,067 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 07:42:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 691 states have (on average 1.541244573082489) internal successors, (1065), 694 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:42:19,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:19,107 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 07:42:19,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:19,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1216239946, now seen corresponding path program 1 times [2022-01-11 07:42:19,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:19,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368238863] [2022-01-11 07:42:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:19,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:19,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:19,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368238863] [2022-01-11 07:42:19,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368238863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:19,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:19,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:19,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331666480] [2022-01-11 07:42:19,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:19,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:19,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:19,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:19,483 INFO L87 Difference]: Start difference. First operand has 695 states, 691 states have (on average 1.541244573082489) internal successors, (1065), 694 states have internal predecessors, (1065), 0 states have call successors, (0), 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 07:42:19,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:19,672 INFO L93 Difference]: Finished difference Result 1434 states and 2195 transitions. [2022-01-11 07:42:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:19,675 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 07:42:19,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:19,689 INFO L225 Difference]: With dead ends: 1434 [2022-01-11 07:42:19,689 INFO L226 Difference]: Without dead ends: 818 [2022-01-11 07:42:19,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:19,697 INFO L933 BasicCegarLoop]: 1027 mSDtfsCounter, 185 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:19,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 2024 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:42:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-01-11 07:42:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 814. [2022-01-11 07:42:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 811 states have (on average 1.4919852034525278) internal successors, (1210), 813 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1210 transitions. [2022-01-11 07:42:19,790 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1210 transitions. Word has length 44 [2022-01-11 07:42:19,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:19,791 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1210 transitions. [2022-01-11 07:42:19,791 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 07:42:19,791 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1210 transitions. [2022-01-11 07:42:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-11 07:42:19,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:19,793 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 07:42:19,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 07:42:19,794 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:19,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1125908725, now seen corresponding path program 1 times [2022-01-11 07:42:19,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:19,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010740518] [2022-01-11 07:42:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:19,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:19,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:19,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010740518] [2022-01-11 07:42:19,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010740518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:19,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:19,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:19,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712485796] [2022-01-11 07:42:19,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:19,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:19,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:19,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:19,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:19,909 INFO L87 Difference]: Start difference. First operand 814 states and 1210 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 07:42:19,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:19,990 INFO L93 Difference]: Finished difference Result 1232 states and 1815 transitions. [2022-01-11 07:42:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:20,022 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 07:42:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:20,026 INFO L225 Difference]: With dead ends: 1232 [2022-01-11 07:42:20,026 INFO L226 Difference]: Without dead ends: 992 [2022-01-11 07:42:20,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:20,028 INFO L933 BasicCegarLoop]: 1014 mSDtfsCounter, 988 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1149 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 07:42:20,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [988 Valid, 1149 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:20,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2022-01-11 07:42:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 984. [2022-01-11 07:42:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 981 states have (on average 1.472986748216106) internal successors, (1445), 983 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1445 transitions. [2022-01-11 07:42:20,085 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1445 transitions. Word has length 44 [2022-01-11 07:42:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:20,086 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1445 transitions. [2022-01-11 07:42:20,086 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 07:42:20,088 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1445 transitions. [2022-01-11 07:42:20,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-11 07:42:20,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:20,098 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 07:42:20,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 07:42:20,099 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:20,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:20,099 INFO L85 PathProgramCache]: Analyzing trace with hash -326998264, now seen corresponding path program 1 times [2022-01-11 07:42:20,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:20,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878634135] [2022-01-11 07:42:20,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:20,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:20,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:20,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878634135] [2022-01-11 07:42:20,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878634135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:20,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:20,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:20,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541840115] [2022-01-11 07:42:20,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:20,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:20,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:20,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:20,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:20,173 INFO L87 Difference]: Start difference. First operand 984 states and 1445 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 07:42:20,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:20,251 INFO L93 Difference]: Finished difference Result 1706 states and 2479 transitions. [2022-01-11 07:42:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:20,251 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 07:42:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:20,256 INFO L225 Difference]: With dead ends: 1706 [2022-01-11 07:42:20,257 INFO L226 Difference]: Without dead ends: 1310 [2022-01-11 07:42:20,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:20,264 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 972 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1146 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 07:42:20,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 1146 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:20,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-01-11 07:42:20,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1302. [2022-01-11 07:42:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1299 states have (on average 1.4457274826789839) internal successors, (1878), 1301 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1878 transitions. [2022-01-11 07:42:20,308 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1878 transitions. Word has length 45 [2022-01-11 07:42:20,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:20,309 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 1878 transitions. [2022-01-11 07:42:20,309 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 07:42:20,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1878 transitions. [2022-01-11 07:42:20,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 07:42:20,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:20,311 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 07:42:20,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 07:42:20,311 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:20,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:20,312 INFO L85 PathProgramCache]: Analyzing trace with hash 917271505, now seen corresponding path program 1 times [2022-01-11 07:42:20,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:20,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015410433] [2022-01-11 07:42:20,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:20,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:20,386 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 07:42:20,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:20,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015410433] [2022-01-11 07:42:20,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015410433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:20,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:20,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:20,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262465769] [2022-01-11 07:42:20,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:20,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:20,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:20,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:20,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:20,389 INFO L87 Difference]: Start difference. First operand 1302 states and 1878 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 07:42:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:20,484 INFO L93 Difference]: Finished difference Result 2670 states and 3780 transitions. [2022-01-11 07:42:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:20,485 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 07:42:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:20,493 INFO L225 Difference]: With dead ends: 2670 [2022-01-11 07:42:20,493 INFO L226 Difference]: Without dead ends: 1974 [2022-01-11 07:42:20,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:20,502 INFO L933 BasicCegarLoop]: 1011 mSDtfsCounter, 967 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 1176 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 07:42:20,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 1176 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:20,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2022-01-11 07:42:20,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1970. [2022-01-11 07:42:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1967 states have (on average 1.4051855617691917) internal successors, (2764), 1969 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:20,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2764 transitions. [2022-01-11 07:42:20,595 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2764 transitions. Word has length 59 [2022-01-11 07:42:20,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:20,597 INFO L470 AbstractCegarLoop]: Abstraction has 1970 states and 2764 transitions. [2022-01-11 07:42:20,597 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 07:42:20,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2764 transitions. [2022-01-11 07:42:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 07:42:20,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:20,599 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 07:42:20,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 07:42:20,600 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:20,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:20,601 INFO L85 PathProgramCache]: Analyzing trace with hash 47022445, now seen corresponding path program 1 times [2022-01-11 07:42:20,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:20,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383944706] [2022-01-11 07:42:20,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:20,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:20,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:20,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383944706] [2022-01-11 07:42:20,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383944706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:20,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:20,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:20,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107966430] [2022-01-11 07:42:20,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:20,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:20,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:20,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:20,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:20,678 INFO L87 Difference]: Start difference. First operand 1970 states and 2764 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 07:42:20,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:20,812 INFO L93 Difference]: Finished difference Result 4594 states and 6346 transitions. [2022-01-11 07:42:20,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:20,813 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 07:42:20,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:20,827 INFO L225 Difference]: With dead ends: 4594 [2022-01-11 07:42:20,828 INFO L226 Difference]: Without dead ends: 3274 [2022-01-11 07:42:20,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:20,831 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 146 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 2160 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 07:42:20,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 2160 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:20,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2022-01-11 07:42:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3274. [2022-01-11 07:42:20,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3271 states have (on average 1.373280342402935) internal successors, (4492), 3273 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 4492 transitions. [2022-01-11 07:42:21,010 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 4492 transitions. Word has length 61 [2022-01-11 07:42:21,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:21,013 INFO L470 AbstractCegarLoop]: Abstraction has 3274 states and 4492 transitions. [2022-01-11 07:42:21,013 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 07:42:21,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 4492 transitions. [2022-01-11 07:42:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:21,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:21,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:21,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 07:42:21,020 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:21,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:21,022 INFO L85 PathProgramCache]: Analyzing trace with hash -481851171, now seen corresponding path program 1 times [2022-01-11 07:42:21,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:21,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776338104] [2022-01-11 07:42:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:21,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:21,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:21,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776338104] [2022-01-11 07:42:21,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776338104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:21,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:21,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:21,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485768602] [2022-01-11 07:42:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:21,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:21,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:21,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:21,102 INFO L87 Difference]: Start difference. First operand 3274 states and 4492 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:21,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:21,255 INFO L93 Difference]: Finished difference Result 4235 states and 5925 transitions. [2022-01-11 07:42:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:21,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:21,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:21,295 INFO L225 Difference]: With dead ends: 4235 [2022-01-11 07:42:21,295 INFO L226 Difference]: Without dead ends: 3699 [2022-01-11 07:42:21,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:21,298 INFO L933 BasicCegarLoop]: 1009 mSDtfsCounter, 935 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:21,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1696 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-01-11 07:42:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3697. [2022-01-11 07:42:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3854899837574446) internal successors, (5118), 3696 states have internal predecessors, (5118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5118 transitions. [2022-01-11 07:42:21,476 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5118 transitions. Word has length 88 [2022-01-11 07:42:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:21,477 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 5118 transitions. [2022-01-11 07:42:21,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5118 transitions. [2022-01-11 07:42:21,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:21,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:21,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:21,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 07:42:21,483 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:21,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1588578045, now seen corresponding path program 1 times [2022-01-11 07:42:21,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:21,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959433938] [2022-01-11 07:42:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:21,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:21,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:21,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959433938] [2022-01-11 07:42:21,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959433938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:21,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:21,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:21,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364285203] [2022-01-11 07:42:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:21,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:21,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:21,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:21,523 INFO L87 Difference]: Start difference. First operand 3697 states and 5118 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:21,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:21,666 INFO L93 Difference]: Finished difference Result 4655 states and 6545 transitions. [2022-01-11 07:42:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:21,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:21,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:21,682 INFO L225 Difference]: With dead ends: 4655 [2022-01-11 07:42:21,682 INFO L226 Difference]: Without dead ends: 3697 [2022-01-11 07:42:21,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:21,686 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 995 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:21,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1003 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:21,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-11 07:42:21,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2022-01-11 07:42:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3833243096913914) internal successors, (5110), 3696 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5110 transitions. [2022-01-11 07:42:21,878 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5110 transitions. Word has length 88 [2022-01-11 07:42:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:21,878 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 5110 transitions. [2022-01-11 07:42:21,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5110 transitions. [2022-01-11 07:42:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:21,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:21,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:21,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 07:42:21,886 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:21,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:21,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1808317219, now seen corresponding path program 1 times [2022-01-11 07:42:21,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:21,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221714360] [2022-01-11 07:42:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:21,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:21,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:21,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221714360] [2022-01-11 07:42:21,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221714360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:21,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:21,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:21,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419749899] [2022-01-11 07:42:21,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:21,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:21,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:21,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:21,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:21,940 INFO L87 Difference]: Start difference. First operand 3697 states and 5110 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:22,088 INFO L93 Difference]: Finished difference Result 4654 states and 6528 transitions. [2022-01-11 07:42:22,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:22,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:22,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:22,103 INFO L225 Difference]: With dead ends: 4654 [2022-01-11 07:42:22,103 INFO L226 Difference]: Without dead ends: 3697 [2022-01-11 07:42:22,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:22,107 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 989 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:22,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 998 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:22,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-11 07:42:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2022-01-11 07:42:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3811586356253385) internal successors, (5102), 3696 states have internal predecessors, (5102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5102 transitions. [2022-01-11 07:42:22,296 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5102 transitions. Word has length 88 [2022-01-11 07:42:22,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:22,296 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 5102 transitions. [2022-01-11 07:42:22,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5102 transitions. [2022-01-11 07:42:22,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:22,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:22,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:22,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 07:42:22,302 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:22,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash 853052157, now seen corresponding path program 1 times [2022-01-11 07:42:22,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:22,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409872183] [2022-01-11 07:42:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:22,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:22,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:22,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409872183] [2022-01-11 07:42:22,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409872183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:22,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:22,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:22,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750584933] [2022-01-11 07:42:22,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:22,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:22,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:22,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:22,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:22,344 INFO L87 Difference]: Start difference. First operand 3697 states and 5102 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:22,487 INFO L93 Difference]: Finished difference Result 4653 states and 6511 transitions. [2022-01-11 07:42:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:22,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:22,501 INFO L225 Difference]: With dead ends: 4653 [2022-01-11 07:42:22,502 INFO L226 Difference]: Without dead ends: 3697 [2022-01-11 07:42:22,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:22,523 INFO L933 BasicCegarLoop]: 993 mSDtfsCounter, 983 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:22,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 993 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-11 07:42:22,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2022-01-11 07:42:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3789929615592853) internal successors, (5094), 3696 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5094 transitions. [2022-01-11 07:42:22,677 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5094 transitions. Word has length 88 [2022-01-11 07:42:22,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:22,677 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 5094 transitions. [2022-01-11 07:42:22,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5094 transitions. [2022-01-11 07:42:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:22,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:22,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:22,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 07:42:22,683 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:22,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash -102469122, now seen corresponding path program 1 times [2022-01-11 07:42:22,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:22,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50941841] [2022-01-11 07:42:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:22,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:22,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:22,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50941841] [2022-01-11 07:42:22,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50941841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:22,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:22,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:22,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724032030] [2022-01-11 07:42:22,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:22,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:22,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:22,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:22,716 INFO L87 Difference]: Start difference. First operand 3697 states and 5094 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:22,890 INFO L93 Difference]: Finished difference Result 4652 states and 6494 transitions. [2022-01-11 07:42:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:22,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:22,918 INFO L225 Difference]: With dead ends: 4652 [2022-01-11 07:42:22,919 INFO L226 Difference]: Without dead ends: 3697 [2022-01-11 07:42:22,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:22,922 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 977 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:22,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [977 Valid, 988 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:22,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-11 07:42:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2022-01-11 07:42:23,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3768272874932324) internal successors, (5086), 3696 states have internal predecessors, (5086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5086 transitions. [2022-01-11 07:42:23,134 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5086 transitions. Word has length 88 [2022-01-11 07:42:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:23,134 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 5086 transitions. [2022-01-11 07:42:23,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5086 transitions. [2022-01-11 07:42:23,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:23,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:23,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:23,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 07:42:23,142 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:23,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:23,143 INFO L85 PathProgramCache]: Analyzing trace with hash -966737890, now seen corresponding path program 1 times [2022-01-11 07:42:23,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:23,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409409732] [2022-01-11 07:42:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:23,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:23,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:23,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409409732] [2022-01-11 07:42:23,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409409732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:23,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:23,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:23,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356769265] [2022-01-11 07:42:23,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:23,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:23,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:23,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:23,200 INFO L87 Difference]: Start difference. First operand 3697 states and 5086 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:23,379 INFO L93 Difference]: Finished difference Result 4651 states and 6477 transitions. [2022-01-11 07:42:23,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:23,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:23,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:23,395 INFO L225 Difference]: With dead ends: 4651 [2022-01-11 07:42:23,395 INFO L226 Difference]: Without dead ends: 3697 [2022-01-11 07:42:23,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:23,399 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 971 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:23,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 983 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-11 07:42:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2022-01-11 07:42:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3746616134271792) internal successors, (5078), 3696 states have internal predecessors, (5078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5078 transitions. [2022-01-11 07:42:23,573 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5078 transitions. Word has length 88 [2022-01-11 07:42:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:23,573 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 5078 transitions. [2022-01-11 07:42:23,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5078 transitions. [2022-01-11 07:42:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:23,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:23,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:23,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 07:42:23,580 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:23,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:23,581 INFO L85 PathProgramCache]: Analyzing trace with hash 806497790, now seen corresponding path program 1 times [2022-01-11 07:42:23,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:23,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898839266] [2022-01-11 07:42:23,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:23,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:23,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:23,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898839266] [2022-01-11 07:42:23,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898839266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:23,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:23,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:23,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429090101] [2022-01-11 07:42:23,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:23,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:23,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:23,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:23,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:23,619 INFO L87 Difference]: Start difference. First operand 3697 states and 5078 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:23,813 INFO L93 Difference]: Finished difference Result 4650 states and 6460 transitions. [2022-01-11 07:42:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:23,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:23,822 INFO L225 Difference]: With dead ends: 4650 [2022-01-11 07:42:23,823 INFO L226 Difference]: Without dead ends: 3697 [2022-01-11 07:42:23,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:23,827 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 895 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:23,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 1020 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-11 07:42:23,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2022-01-11 07:42:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3687060097455332) internal successors, (5056), 3696 states have internal predecessors, (5056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5056 transitions. [2022-01-11 07:42:23,997 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5056 transitions. Word has length 88 [2022-01-11 07:42:23,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:23,997 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 5056 transitions. [2022-01-11 07:42:23,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5056 transitions. [2022-01-11 07:42:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:24,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:24,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:24,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 07:42:24,003 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:24,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:24,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1852315747, now seen corresponding path program 1 times [2022-01-11 07:42:24,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:24,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957351442] [2022-01-11 07:42:24,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:24,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:24,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:24,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957351442] [2022-01-11 07:42:24,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957351442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:24,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:24,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:24,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76836245] [2022-01-11 07:42:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:24,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:24,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:24,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:24,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:24,041 INFO L87 Difference]: Start difference. First operand 3697 states and 5056 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:24,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:24,221 INFO L93 Difference]: Finished difference Result 4649 states and 6415 transitions. [2022-01-11 07:42:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:24,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:24,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:24,231 INFO L225 Difference]: With dead ends: 4649 [2022-01-11 07:42:24,231 INFO L226 Difference]: Without dead ends: 3697 [2022-01-11 07:42:24,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:24,236 INFO L933 BasicCegarLoop]: 949 mSDtfsCounter, 882 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:24,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 1006 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:24,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-11 07:42:24,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2022-01-11 07:42:24,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3627504060638873) internal successors, (5034), 3696 states have internal predecessors, (5034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5034 transitions. [2022-01-11 07:42:24,404 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5034 transitions. Word has length 88 [2022-01-11 07:42:24,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:24,404 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 5034 transitions. [2022-01-11 07:42:24,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5034 transitions. [2022-01-11 07:42:24,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:24,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:24,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:24,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 07:42:24,429 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:24,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1427495459, now seen corresponding path program 1 times [2022-01-11 07:42:24,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:24,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309506164] [2022-01-11 07:42:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:24,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:24,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:24,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309506164] [2022-01-11 07:42:24,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309506164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:24,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:24,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:24,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439738313] [2022-01-11 07:42:24,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:24,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:24,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:24,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:24,468 INFO L87 Difference]: Start difference. First operand 3697 states and 5034 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:24,669 INFO L93 Difference]: Finished difference Result 4648 states and 6370 transitions. [2022-01-11 07:42:24,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:24,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:24,677 INFO L225 Difference]: With dead ends: 4648 [2022-01-11 07:42:24,677 INFO L226 Difference]: Without dead ends: 3697 [2022-01-11 07:42:24,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:24,680 INFO L933 BasicCegarLoop]: 936 mSDtfsCounter, 869 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:24,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 992 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-11 07:42:24,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2022-01-11 07:42:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3567948023822414) internal successors, (5012), 3696 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 07:42:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5012 transitions. [2022-01-11 07:42:24,837 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5012 transitions. Word has length 88 [2022-01-11 07:42:24,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:24,837 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 5012 transitions. [2022-01-11 07:42:24,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5012 transitions. [2022-01-11 07:42:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:24,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:24,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:24,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 07:42:24,842 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:24,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1004596732, now seen corresponding path program 1 times [2022-01-11 07:42:24,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:24,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663116435] [2022-01-11 07:42:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:24,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:24,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:24,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663116435] [2022-01-11 07:42:24,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663116435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:24,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:24,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:24,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755700598] [2022-01-11 07:42:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:24,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:24,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:24,881 INFO L87 Difference]: Start difference. First operand 3697 states and 5012 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:25,055 INFO L93 Difference]: Finished difference Result 4647 states and 6325 transitions. [2022-01-11 07:42:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:25,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:25,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:25,063 INFO L225 Difference]: With dead ends: 4647 [2022-01-11 07:42:25,064 INFO L226 Difference]: Without dead ends: 3697 [2022-01-11 07:42:25,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:25,067 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 856 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:25,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 978 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:25,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-11 07:42:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2022-01-11 07:42:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3508391987005957) internal successors, (4990), 3696 states have internal predecessors, (4990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 4990 transitions. [2022-01-11 07:42:25,235 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 4990 transitions. Word has length 88 [2022-01-11 07:42:25,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:25,236 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 4990 transitions. [2022-01-11 07:42:25,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:25,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 4990 transitions. [2022-01-11 07:42:25,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:25,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:25,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:25,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 07:42:25,241 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:25,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:25,241 INFO L85 PathProgramCache]: Analyzing trace with hash -55713509, now seen corresponding path program 1 times [2022-01-11 07:42:25,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:25,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498254151] [2022-01-11 07:42:25,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:25,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:25,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:25,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498254151] [2022-01-11 07:42:25,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498254151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:25,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:25,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:25,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893263718] [2022-01-11 07:42:25,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:25,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:25,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:25,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:25,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:25,284 INFO L87 Difference]: Start difference. First operand 3697 states and 4990 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:25,473 INFO L93 Difference]: Finished difference Result 4646 states and 6280 transitions. [2022-01-11 07:42:25,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:25,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:25,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:25,481 INFO L225 Difference]: With dead ends: 4646 [2022-01-11 07:42:25,481 INFO L226 Difference]: Without dead ends: 3697 [2022-01-11 07:42:25,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:25,484 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 843 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:25,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 964 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-11 07:42:25,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2022-01-11 07:42:25,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3448835950189497) internal successors, (4968), 3696 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 4968 transitions. [2022-01-11 07:42:25,684 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 4968 transitions. Word has length 88 [2022-01-11 07:42:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:25,684 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 4968 transitions. [2022-01-11 07:42:25,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 4968 transitions. [2022-01-11 07:42:25,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:25,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:25,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:25,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 07:42:25,689 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:25,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:25,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1127053242, now seen corresponding path program 1 times [2022-01-11 07:42:25,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:25,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180699101] [2022-01-11 07:42:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:25,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:25,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:25,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180699101] [2022-01-11 07:42:25,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180699101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:25,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:25,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:25,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011199802] [2022-01-11 07:42:25,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:25,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:25,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:25,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:25,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:25,729 INFO L87 Difference]: Start difference. First operand 3697 states and 4968 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:25,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:25,924 INFO L93 Difference]: Finished difference Result 4645 states and 6235 transitions. [2022-01-11 07:42:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:25,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:25,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:25,932 INFO L225 Difference]: With dead ends: 4645 [2022-01-11 07:42:25,933 INFO L226 Difference]: Without dead ends: 3697 [2022-01-11 07:42:25,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:25,935 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 830 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:25,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 950 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-11 07:42:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2022-01-11 07:42:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.3389279913373038) internal successors, (4946), 3696 states have internal predecessors, (4946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 4946 transitions. [2022-01-11 07:42:26,180 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 4946 transitions. Word has length 88 [2022-01-11 07:42:26,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:26,181 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 4946 transitions. [2022-01-11 07:42:26,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 4946 transitions. [2022-01-11 07:42:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:26,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:26,186 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] [2022-01-11 07:42:26,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 07:42:26,187 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:26,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:26,187 INFO L85 PathProgramCache]: Analyzing trace with hash 11995481, now seen corresponding path program 1 times [2022-01-11 07:42:26,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:26,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939676986] [2022-01-11 07:42:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:26,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:26,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:26,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939676986] [2022-01-11 07:42:26,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939676986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:26,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:26,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:42:26,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563240713] [2022-01-11 07:42:26,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:26,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:42:26,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:26,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:42:26,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:42:26,243 INFO L87 Difference]: Start difference. First operand 3697 states and 4946 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:26,577 INFO L93 Difference]: Finished difference Result 5088 states and 6803 transitions. [2022-01-11 07:42:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:42:26,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:26,586 INFO L225 Difference]: With dead ends: 5088 [2022-01-11 07:42:26,586 INFO L226 Difference]: Without dead ends: 4147 [2022-01-11 07:42:26,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:42:26,590 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 1968 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:26,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1968 Valid, 2483 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:42:26,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2022-01-11 07:42:26,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 3703. [2022-01-11 07:42:26,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3703 states, 3700 states have (on average 1.3345945945945945) internal successors, (4938), 3702 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3703 states to 3703 states and 4938 transitions. [2022-01-11 07:42:26,836 INFO L78 Accepts]: Start accepts. Automaton has 3703 states and 4938 transitions. Word has length 88 [2022-01-11 07:42:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:26,837 INFO L470 AbstractCegarLoop]: Abstraction has 3703 states and 4938 transitions. [2022-01-11 07:42:26,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3703 states and 4938 transitions. [2022-01-11 07:42:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:26,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:26,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:26,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 07:42:26,841 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash 292345370, now seen corresponding path program 1 times [2022-01-11 07:42:26,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:26,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610514171] [2022-01-11 07:42:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:26,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:26,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:26,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610514171] [2022-01-11 07:42:26,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610514171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:26,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:26,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 07:42:26,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370144331] [2022-01-11 07:42:26,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:26,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 07:42:26,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:26,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 07:42:26,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 07:42:26,891 INFO L87 Difference]: Start difference. First operand 3703 states and 4938 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:27,218 INFO L93 Difference]: Finished difference Result 5295 states and 7031 transitions. [2022-01-11 07:42:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 07:42:27,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:27,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:27,227 INFO L225 Difference]: With dead ends: 5295 [2022-01-11 07:42:27,228 INFO L226 Difference]: Without dead ends: 4369 [2022-01-11 07:42:27,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 07:42:27,230 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 1654 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:27,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 2962 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:42:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2022-01-11 07:42:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 3709. [2022-01-11 07:42:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3706 states have (on average 1.3302752293577982) internal successors, (4930), 3708 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 4930 transitions. [2022-01-11 07:42:27,465 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 4930 transitions. Word has length 88 [2022-01-11 07:42:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:27,465 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 4930 transitions. [2022-01-11 07:42:27,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 4930 transitions. [2022-01-11 07:42:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 07:42:27,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:27,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:27,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 07:42:27,471 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:27,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1643314917, now seen corresponding path program 1 times [2022-01-11 07:42:27,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:27,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305717189] [2022-01-11 07:42:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:27,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:27,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:27,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305717189] [2022-01-11 07:42:27,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305717189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:27,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:27,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 07:42:27,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807370534] [2022-01-11 07:42:27,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:27,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:27,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:27,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:27,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:27,513 INFO L87 Difference]: Start difference. First operand 3709 states and 4930 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:27,786 INFO L93 Difference]: Finished difference Result 5541 states and 7284 transitions. [2022-01-11 07:42:27,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:27,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 07:42:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:27,796 INFO L225 Difference]: With dead ends: 5541 [2022-01-11 07:42:27,796 INFO L226 Difference]: Without dead ends: 4583 [2022-01-11 07:42:27,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:27,799 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 782 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:27,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1466 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:27,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4583 states. [2022-01-11 07:42:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4583 to 4501. [2022-01-11 07:42:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4501 states, 4498 states have (on average 1.319919964428635) internal successors, (5937), 4500 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4501 states to 4501 states and 5937 transitions. [2022-01-11 07:42:28,022 INFO L78 Accepts]: Start accepts. Automaton has 4501 states and 5937 transitions. Word has length 88 [2022-01-11 07:42:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:28,022 INFO L470 AbstractCegarLoop]: Abstraction has 4501 states and 5937 transitions. [2022-01-11 07:42:28,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4501 states and 5937 transitions. [2022-01-11 07:42:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-11 07:42:28,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:28,033 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 07:42:28,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 07:42:28,033 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:28,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:28,034 INFO L85 PathProgramCache]: Analyzing trace with hash 452224030, now seen corresponding path program 1 times [2022-01-11 07:42:28,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:28,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040899085] [2022-01-11 07:42:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:28,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:28,084 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 07:42:28,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:28,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040899085] [2022-01-11 07:42:28,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040899085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:28,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:28,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:28,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975886289] [2022-01-11 07:42:28,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:28,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:28,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:28,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:28,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:28,086 INFO L87 Difference]: Start difference. First operand 4501 states and 5937 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 07:42:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:28,477 INFO L93 Difference]: Finished difference Result 9581 states and 12821 transitions. [2022-01-11 07:42:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:28,477 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 07:42:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:28,494 INFO L225 Difference]: With dead ends: 9581 [2022-01-11 07:42:28,494 INFO L226 Difference]: Without dead ends: 7041 [2022-01-11 07:42:28,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:28,501 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 131 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:28,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1731 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:28,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7041 states. [2022-01-11 07:42:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7041 to 7037. [2022-01-11 07:42:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7037 states, 7034 states have (on average 1.3239977253340915) internal successors, (9313), 7036 states have internal predecessors, (9313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 9313 transitions. [2022-01-11 07:42:28,979 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 9313 transitions. Word has length 103 [2022-01-11 07:42:28,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:28,979 INFO L470 AbstractCegarLoop]: Abstraction has 7037 states and 9313 transitions. [2022-01-11 07:42:28,979 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 07:42:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 9313 transitions. [2022-01-11 07:42:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-11 07:42:28,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:28,988 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 07:42:28,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 07:42:28,988 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:28,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:28,989 INFO L85 PathProgramCache]: Analyzing trace with hash 393261305, now seen corresponding path program 1 times [2022-01-11 07:42:28,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:28,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638876541] [2022-01-11 07:42:28,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:28,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:29,030 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 07:42:29,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:29,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638876541] [2022-01-11 07:42:29,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638876541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:29,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:29,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:29,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99680884] [2022-01-11 07:42:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:29,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:29,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:29,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:29,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,032 INFO L87 Difference]: Start difference. First operand 7037 states and 9313 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 07:42:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:29,387 INFO L93 Difference]: Finished difference Result 9605 states and 12817 transitions. [2022-01-11 07:42:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:29,388 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 07:42:29,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:29,392 INFO L225 Difference]: With dead ends: 9605 [2022-01-11 07:42:29,392 INFO L226 Difference]: Without dead ends: 1776 [2022-01-11 07:42:29,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,401 INFO L933 BasicCegarLoop]: 995 mSDtfsCounter, 112 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1853 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 07:42:29,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1853 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2022-01-11 07:42:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1776. [2022-01-11 07:42:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1775 states have (on average 1.2771830985915493) internal successors, (2267), 1775 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2267 transitions. [2022-01-11 07:42:29,512 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2267 transitions. Word has length 104 [2022-01-11 07:42:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:29,512 INFO L470 AbstractCegarLoop]: Abstraction has 1776 states and 2267 transitions. [2022-01-11 07:42:29,512 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 07:42:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2267 transitions. [2022-01-11 07:42:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 07:42:29,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:29,514 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:29,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 07:42:29,514 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:29,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1731204950, now seen corresponding path program 1 times [2022-01-11 07:42:29,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:29,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387364484] [2022-01-11 07:42:29,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:29,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:29,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:29,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387364484] [2022-01-11 07:42:29,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387364484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:29,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:29,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:29,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93237655] [2022-01-11 07:42:29,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:29,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:29,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:29,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:29,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,566 INFO L87 Difference]: Start difference. First operand 1776 states and 2267 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:29,786 INFO L93 Difference]: Finished difference Result 5150 states and 6593 transitions. [2022-01-11 07:42:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:29,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-01-11 07:42:29,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:29,793 INFO L225 Difference]: With dead ends: 5150 [2022-01-11 07:42:29,793 INFO L226 Difference]: Without dead ends: 3406 [2022-01-11 07:42:29,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:29,797 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 604 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:29,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 1270 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2022-01-11 07:42:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 3260. [2022-01-11 07:42:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3259 states have (on average 1.274930960417306) internal successors, (4155), 3259 states have internal predecessors, (4155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4155 transitions. [2022-01-11 07:42:30,004 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4155 transitions. Word has length 142 [2022-01-11 07:42:30,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:30,004 INFO L470 AbstractCegarLoop]: Abstraction has 3260 states and 4155 transitions. [2022-01-11 07:42:30,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4155 transitions. [2022-01-11 07:42:30,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 07:42:30,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:30,007 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:30,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 07:42:30,007 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:30,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash 200197737, now seen corresponding path program 1 times [2022-01-11 07:42:30,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:30,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357565085] [2022-01-11 07:42:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:30,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:30,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:30,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357565085] [2022-01-11 07:42:30,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357565085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:30,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:30,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:30,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255967156] [2022-01-11 07:42:30,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:30,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:30,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,077 INFO L87 Difference]: Start difference. First operand 3260 states and 4155 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:30,479 INFO L93 Difference]: Finished difference Result 9517 states and 12060 transitions. [2022-01-11 07:42:30,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:30,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-01-11 07:42:30,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:30,489 INFO L225 Difference]: With dead ends: 9517 [2022-01-11 07:42:30,489 INFO L226 Difference]: Without dead ends: 6335 [2022-01-11 07:42:30,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,495 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 607 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:30,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 1530 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2022-01-11 07:42:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 6205. [2022-01-11 07:42:30,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6205 states, 6204 states have (on average 1.2578981302385557) internal successors, (7804), 6204 states have internal predecessors, (7804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6205 states to 6205 states and 7804 transitions. [2022-01-11 07:42:30,910 INFO L78 Accepts]: Start accepts. Automaton has 6205 states and 7804 transitions. Word has length 142 [2022-01-11 07:42:30,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:30,910 INFO L470 AbstractCegarLoop]: Abstraction has 6205 states and 7804 transitions. [2022-01-11 07:42:30,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand 6205 states and 7804 transitions. [2022-01-11 07:42:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 07:42:30,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:30,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:30,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 07:42:30,914 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:30,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:30,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1932438666, now seen corresponding path program 1 times [2022-01-11 07:42:30,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:30,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867621334] [2022-01-11 07:42:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:30,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:30,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:30,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867621334] [2022-01-11 07:42:30,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867621334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:30,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:30,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:30,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309647669] [2022-01-11 07:42:30,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:30,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:30,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:30,947 INFO L87 Difference]: Start difference. First operand 6205 states and 7804 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:31,283 INFO L93 Difference]: Finished difference Result 12303 states and 15482 transitions. [2022-01-11 07:42:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:31,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-01-11 07:42:31,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:31,292 INFO L225 Difference]: With dead ends: 12303 [2022-01-11 07:42:31,292 INFO L226 Difference]: Without dead ends: 6134 [2022-01-11 07:42:31,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:31,301 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 690 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:31,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 696 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6134 states. [2022-01-11 07:42:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6134 to 6134. [2022-01-11 07:42:31,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6134 states, 6133 states have (on average 1.2587640632643078) internal successors, (7720), 6133 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6134 states to 6134 states and 7720 transitions. [2022-01-11 07:42:31,595 INFO L78 Accepts]: Start accepts. Automaton has 6134 states and 7720 transitions. Word has length 142 [2022-01-11 07:42:31,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:31,596 INFO L470 AbstractCegarLoop]: Abstraction has 6134 states and 7720 transitions. [2022-01-11 07:42:31,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:31,596 INFO L276 IsEmpty]: Start isEmpty. Operand 6134 states and 7720 transitions. [2022-01-11 07:42:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 07:42:31,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:31,599 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:31,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 07:42:31,600 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:31,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1629173970, now seen corresponding path program 1 times [2022-01-11 07:42:31,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:31,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836524702] [2022-01-11 07:42:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:31,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:31,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:31,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836524702] [2022-01-11 07:42:31,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836524702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:31,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:31,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:31,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150244489] [2022-01-11 07:42:31,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:31,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:31,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:31,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:31,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:31,650 INFO L87 Difference]: Start difference. First operand 6134 states and 7720 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:32,374 INFO L93 Difference]: Finished difference Result 17860 states and 22419 transitions. [2022-01-11 07:42:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:32,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-11 07:42:32,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:32,390 INFO L225 Difference]: With dead ends: 17860 [2022-01-11 07:42:32,390 INFO L226 Difference]: Without dead ends: 11804 [2022-01-11 07:42:32,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:32,400 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 606 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:32,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1517 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 07:42:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11804 states. [2022-01-11 07:42:33,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11804 to 11354. [2022-01-11 07:42:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11354 states, 11353 states have (on average 1.2498018144983705) internal successors, (14189), 11353 states have internal predecessors, (14189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11354 states to 11354 states and 14189 transitions. [2022-01-11 07:42:33,032 INFO L78 Accepts]: Start accepts. Automaton has 11354 states and 14189 transitions. Word has length 143 [2022-01-11 07:42:33,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:33,033 INFO L470 AbstractCegarLoop]: Abstraction has 11354 states and 14189 transitions. [2022-01-11 07:42:33,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,033 INFO L276 IsEmpty]: Start isEmpty. Operand 11354 states and 14189 transitions. [2022-01-11 07:42:33,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 07:42:33,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:33,039 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:33,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 07:42:33,039 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:33,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:33,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1152214672, now seen corresponding path program 1 times [2022-01-11 07:42:33,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:33,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027614791] [2022-01-11 07:42:33,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:33,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:33,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:33,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027614791] [2022-01-11 07:42:33,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027614791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:33,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:33,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:33,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330855679] [2022-01-11 07:42:33,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:33,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:33,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:33,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:33,073 INFO L87 Difference]: Start difference. First operand 11354 states and 14189 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:33,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:33,626 INFO L93 Difference]: Finished difference Result 22595 states and 28246 transitions. [2022-01-11 07:42:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:33,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-11 07:42:33,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:33,641 INFO L225 Difference]: With dead ends: 22595 [2022-01-11 07:42:33,641 INFO L226 Difference]: Without dead ends: 11284 [2022-01-11 07:42:33,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:33,652 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 688 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:33,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 695 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:33,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11284 states. [2022-01-11 07:42:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11284 to 11284. [2022-01-11 07:42:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11284 states, 11283 states have (on average 1.2502880439599398) internal successors, (14107), 11283 states have internal predecessors, (14107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 14107 transitions. [2022-01-11 07:42:34,249 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 14107 transitions. Word has length 143 [2022-01-11 07:42:34,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:34,249 INFO L470 AbstractCegarLoop]: Abstraction has 11284 states and 14107 transitions. [2022-01-11 07:42:34,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 14107 transitions. [2022-01-11 07:42:34,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 07:42:34,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:34,254 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:34,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 07:42:34,254 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:34,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2013092926, now seen corresponding path program 1 times [2022-01-11 07:42:34,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:34,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112965696] [2022-01-11 07:42:34,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:34,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:34,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:34,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112965696] [2022-01-11 07:42:34,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112965696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:34,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:34,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:34,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870708189] [2022-01-11 07:42:34,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:34,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:34,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:34,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:34,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:34,308 INFO L87 Difference]: Start difference. First operand 11284 states and 14107 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:35,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:35,445 INFO L93 Difference]: Finished difference Result 32149 states and 40140 transitions. [2022-01-11 07:42:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:35,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-01-11 07:42:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:35,478 INFO L225 Difference]: With dead ends: 32149 [2022-01-11 07:42:35,479 INFO L226 Difference]: Without dead ends: 20943 [2022-01-11 07:42:35,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:35,497 INFO L933 BasicCegarLoop]: 913 mSDtfsCounter, 489 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:35,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 1585 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20943 states. [2022-01-11 07:42:36,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20943 to 20941. [2022-01-11 07:42:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20941 states, 20940 states have (on average 1.2447946513849093) internal successors, (26066), 20940 states have internal predecessors, (26066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20941 states to 20941 states and 26066 transitions. [2022-01-11 07:42:36,697 INFO L78 Accepts]: Start accepts. Automaton has 20941 states and 26066 transitions. Word has length 144 [2022-01-11 07:42:36,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:36,697 INFO L470 AbstractCegarLoop]: Abstraction has 20941 states and 26066 transitions. [2022-01-11 07:42:36,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 20941 states and 26066 transitions. [2022-01-11 07:42:36,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 07:42:36,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:36,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:36,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 07:42:36,704 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:36,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:36,705 INFO L85 PathProgramCache]: Analyzing trace with hash 74553629, now seen corresponding path program 1 times [2022-01-11 07:42:36,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:36,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913131225] [2022-01-11 07:42:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:36,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:36,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:36,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913131225] [2022-01-11 07:42:36,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913131225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:36,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:36,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:36,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844376581] [2022-01-11 07:42:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:36,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:36,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:36,736 INFO L87 Difference]: Start difference. First operand 20941 states and 26066 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:37,876 INFO L93 Difference]: Finished difference Result 41735 states and 51963 transitions. [2022-01-11 07:42:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:37,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-01-11 07:42:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:37,906 INFO L225 Difference]: With dead ends: 41735 [2022-01-11 07:42:37,906 INFO L226 Difference]: Without dead ends: 20872 [2022-01-11 07:42:37,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:37,924 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 686 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:37,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 694 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:37,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20872 states. [2022-01-11 07:42:39,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20872 to 20872. [2022-01-11 07:42:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20872 states, 20871 states have (on average 1.245076900963059) internal successors, (25986), 20871 states have internal predecessors, (25986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20872 states to 20872 states and 25986 transitions. [2022-01-11 07:42:39,082 INFO L78 Accepts]: Start accepts. Automaton has 20872 states and 25986 transitions. Word has length 144 [2022-01-11 07:42:39,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:39,082 INFO L470 AbstractCegarLoop]: Abstraction has 20872 states and 25986 transitions. [2022-01-11 07:42:39,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 20872 states and 25986 transitions. [2022-01-11 07:42:39,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-11 07:42:39,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:39,090 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:39,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 07:42:39,090 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:39,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:39,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1284072447, now seen corresponding path program 1 times [2022-01-11 07:42:39,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:39,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059716050] [2022-01-11 07:42:39,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:39,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:39,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:39,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059716050] [2022-01-11 07:42:39,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059716050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:39,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:39,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:39,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035457722] [2022-01-11 07:42:39,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:39,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:39,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:39,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:39,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:39,158 INFO L87 Difference]: Start difference. First operand 20872 states and 25986 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:41,542 INFO L93 Difference]: Finished difference Result 60072 states and 74737 transitions. [2022-01-11 07:42:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:41,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-01-11 07:42:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:41,603 INFO L225 Difference]: With dead ends: 60072 [2022-01-11 07:42:41,603 INFO L226 Difference]: Without dead ends: 39278 [2022-01-11 07:42:41,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:41,625 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 607 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:41,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 1477 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39278 states. [2022-01-11 07:42:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39278 to 38572. [2022-01-11 07:42:43,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38572 states, 38571 states have (on average 1.2406989707293044) internal successors, (47855), 38571 states have internal predecessors, (47855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:43,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38572 states to 38572 states and 47855 transitions. [2022-01-11 07:42:43,795 INFO L78 Accepts]: Start accepts. Automaton has 38572 states and 47855 transitions. Word has length 145 [2022-01-11 07:42:43,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:43,796 INFO L470 AbstractCegarLoop]: Abstraction has 38572 states and 47855 transitions. [2022-01-11 07:42:43,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:43,796 INFO L276 IsEmpty]: Start isEmpty. Operand 38572 states and 47855 transitions. [2022-01-11 07:42:43,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-11 07:42:43,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:43,808 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:43,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 07:42:43,809 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:43,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1069421534, now seen corresponding path program 1 times [2022-01-11 07:42:43,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:43,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159446941] [2022-01-11 07:42:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:43,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:43,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:43,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159446941] [2022-01-11 07:42:43,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159446941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:43,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:43,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:43,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501005377] [2022-01-11 07:42:43,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:43,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:43,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:43,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:43,844 INFO L87 Difference]: Start difference. First operand 38572 states and 47855 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:46,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:46,493 INFO L93 Difference]: Finished difference Result 77019 states and 95567 transitions. [2022-01-11 07:42:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:46,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-01-11 07:42:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:46,547 INFO L225 Difference]: With dead ends: 77019 [2022-01-11 07:42:46,547 INFO L226 Difference]: Without dead ends: 38504 [2022-01-11 07:42:46,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:46,586 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 684 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:46,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 693 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:46,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38504 states. [2022-01-11 07:42:48,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38504 to 38504. [2022-01-11 07:42:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38504 states, 38503 states have (on average 1.2408643482326052) internal successors, (47777), 38503 states have internal predecessors, (47777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38504 states to 38504 states and 47777 transitions. [2022-01-11 07:42:48,889 INFO L78 Accepts]: Start accepts. Automaton has 38504 states and 47777 transitions. Word has length 145 [2022-01-11 07:42:48,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:48,889 INFO L470 AbstractCegarLoop]: Abstraction has 38504 states and 47777 transitions. [2022-01-11 07:42:48,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:48,889 INFO L276 IsEmpty]: Start isEmpty. Operand 38504 states and 47777 transitions. [2022-01-11 07:42:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-11 07:42:48,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:48,900 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:48,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 07:42:48,901 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:48,901 INFO L85 PathProgramCache]: Analyzing trace with hash 69913068, now seen corresponding path program 1 times [2022-01-11 07:42:48,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:48,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245731550] [2022-01-11 07:42:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:48,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:42:48,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:48,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245731550] [2022-01-11 07:42:48,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245731550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:48,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:48,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:48,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145215098] [2022-01-11 07:42:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:48,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:48,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:48,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:48,956 INFO L87 Difference]: Start difference. First operand 38504 states and 47777 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:42:53,099 INFO L93 Difference]: Finished difference Result 109471 states and 135614 transitions. [2022-01-11 07:42:53,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:42:53,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-01-11 07:42:53,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:42:53,221 INFO L225 Difference]: With dead ends: 109471 [2022-01-11 07:42:53,221 INFO L226 Difference]: Without dead ends: 71045 [2022-01-11 07:42:53,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:53,262 INFO L933 BasicCegarLoop]: 770 mSDtfsCounter, 605 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:42:53,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 1430 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:42:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71045 states. [2022-01-11 07:42:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71045 to 70531. [2022-01-11 07:42:57,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70531 states, 70530 states have (on average 1.237204026655324) internal successors, (87260), 70530 states have internal predecessors, (87260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70531 states to 70531 states and 87260 transitions. [2022-01-11 07:42:57,762 INFO L78 Accepts]: Start accepts. Automaton has 70531 states and 87260 transitions. Word has length 146 [2022-01-11 07:42:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:42:57,762 INFO L470 AbstractCegarLoop]: Abstraction has 70531 states and 87260 transitions. [2022-01-11 07:42:57,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:42:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 70531 states and 87260 transitions. [2022-01-11 07:42:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-11 07:42:57,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:42:57,783 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 07:42:57,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 07:42:57,783 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:42:57,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:42:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2091490035, now seen corresponding path program 1 times [2022-01-11 07:42:57,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:42:57,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124997193] [2022-01-11 07:42:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:42:57,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:42:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:42:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 07:42:57,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:42:57,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124997193] [2022-01-11 07:42:57,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124997193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:42:57,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:42:57,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:42:57,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055977808] [2022-01-11 07:42:57,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:42:57,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:42:57,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:42:57,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:42:57,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:42:57,817 INFO L87 Difference]: Start difference. First operand 70531 states and 87260 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:43:02,388 INFO L93 Difference]: Finished difference Result 140931 states and 174371 transitions. [2022-01-11 07:43:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:43:02,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-01-11 07:43:02,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:43:02,512 INFO L225 Difference]: With dead ends: 140931 [2022-01-11 07:43:02,512 INFO L226 Difference]: Without dead ends: 70464 [2022-01-11 07:43:02,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:02,573 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 682 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:43:02,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 692 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:43:02,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70464 states. [2022-01-11 07:43:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70464 to 70464. [2022-01-11 07:43:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70464 states, 70463 states have (on average 1.2373018463590821) internal successors, (87184), 70463 states have internal predecessors, (87184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70464 states to 70464 states and 87184 transitions. [2022-01-11 07:43:07,384 INFO L78 Accepts]: Start accepts. Automaton has 70464 states and 87184 transitions. Word has length 146 [2022-01-11 07:43:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 07:43:07,384 INFO L470 AbstractCegarLoop]: Abstraction has 70464 states and 87184 transitions. [2022-01-11 07:43:07,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:07,384 INFO L276 IsEmpty]: Start isEmpty. Operand 70464 states and 87184 transitions. [2022-01-11 07:43:07,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-11 07:43:07,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 07:43:07,402 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] [2022-01-11 07:43:07,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 07:43:07,403 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 07:43:07,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 07:43:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1477308587, now seen corresponding path program 1 times [2022-01-11 07:43:07,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 07:43:07,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960856182] [2022-01-11 07:43:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 07:43:07,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 07:43:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 07:43:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 07:43:07,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 07:43:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960856182] [2022-01-11 07:43:07,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960856182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 07:43:07,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 07:43:07,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 07:43:07,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237032650] [2022-01-11 07:43:07,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 07:43:07,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 07:43:07,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 07:43:07,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 07:43:07,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:07,464 INFO L87 Difference]: Start difference. First operand 70464 states and 87184 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 07:43:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 07:43:15,624 INFO L93 Difference]: Finished difference Result 204330 states and 252561 transitions. [2022-01-11 07:43:15,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 07:43:15,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2022-01-11 07:43:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 07:43:15,826 INFO L225 Difference]: With dead ends: 204330 [2022-01-11 07:43:15,826 INFO L226 Difference]: Without dead ends: 102504 [2022-01-11 07:43:15,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 07:43:15,910 INFO L933 BasicCegarLoop]: 1287 mSDtfsCounter, 602 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 07:43:15,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 1964 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 07:43:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102504 states.