/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_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:18:07,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:18:07,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:18:08,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:18:08,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:18:08,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:18:08,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:18:08,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:18:08,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:18:08,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:18:08,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:18:08,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:18:08,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:18:08,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:18:08,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:18:08,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:18:08,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:18:08,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:18:08,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:18:08,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:18:08,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:18:08,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:18:08,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:18:08,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:18:08,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:18:08,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:18:08,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:18:08,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:18:08,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:18:08,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:18:08,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:18:08,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:18:08,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:18:08,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:18:08,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:18:08,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:18:08,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:18:08,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:18:08,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:18:08,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:18:08,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:18:08,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:18:08,075 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:18:08,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:18:08,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:18:08,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:18:08,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:18:08,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:18:08,076 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:18:08,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:18:08,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:18:08,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:18:08,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:18:08,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:18:08,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:18:08,077 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:18:08,077 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:18:08,077 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:18:08,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:18:08,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:18:08,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:18:08,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:18:08,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:18:08,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:18:08,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:18:08,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:18:08,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:18:08,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:18:08,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:18:08,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:18:08,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:18:08,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:18:08,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:18:08,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:18:08,079 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:18:08,079 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:18:08,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:18:08,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:18:08,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:18:08,243 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:18:08,243 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:18:08,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 13:18:08,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fb2c90d2/3b1be8f7893a4186b87d07ebdc5f51a0/FLAG0651d67fd [2022-01-10 13:18:08,698 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:18:08,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 13:18:08,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fb2c90d2/3b1be8f7893a4186b87d07ebdc5f51a0/FLAG0651d67fd [2022-01-10 13:18:09,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fb2c90d2/3b1be8f7893a4186b87d07ebdc5f51a0 [2022-01-10 13:18:09,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:18:09,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:18:09,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:18:09,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:18:09,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:18:09,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4794ec5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09, skipping insertion in model container [2022-01-10 13:18:09,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:18:09,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:18:09,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15611,15624] [2022-01-10 13:18:09,338 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16258,16271] [2022-01-10 13:18:09,351 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17599,17612] [2022-01-10 13:18:09,360 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18659,18672] [2022-01-10 13:18:09,404 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27944,27957] [2022-01-10 13:18:09,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:18:09,463 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:18:09,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15611,15624] [2022-01-10 13:18:09,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16258,16271] [2022-01-10 13:18:09,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17599,17612] [2022-01-10 13:18:09,544 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18659,18672] [2022-01-10 13:18:09,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27944,27957] [2022-01-10 13:18:09,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:18:09,607 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:18:09,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09 WrapperNode [2022-01-10 13:18:09,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:18:09,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:18:09,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:18:09,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:18:09,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,686 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1671 [2022-01-10 13:18:09,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:18:09,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:18:09,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:18:09,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:18:09,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:18:09,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:18:09,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:18:09,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:18:09,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09" (1/1) ... [2022-01-10 13:18:09,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:18:09,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:18:09,792 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) [2022-01-10 13:18:09,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 13:18:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:18:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:18:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:18:09,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:18:09,905 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:18:09,906 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:18:10,818 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:18:10,826 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:18:10,826 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:18:10,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:18:10 BoogieIcfgContainer [2022-01-10 13:18:10,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:18:10,828 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:18:10,829 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:18:10,829 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:18:10,831 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:18:10" (1/1) ... [2022-01-10 13:18:11,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:18:11 BasicIcfg [2022-01-10 13:18:11,454 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:18:11,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:18:11,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:18:11,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:18:11,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:18:09" (1/4) ... [2022-01-10 13:18:11,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43719cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:18:11, skipping insertion in model container [2022-01-10 13:18:11,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:18:09" (2/4) ... [2022-01-10 13:18:11,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43719cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:18:11, skipping insertion in model container [2022-01-10 13:18:11,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:18:10" (3/4) ... [2022-01-10 13:18:11,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43719cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:18:11, skipping insertion in model container [2022-01-10 13:18:11,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:18:11" (4/4) ... [2022-01-10 13:18:11,461 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.cTransformedIcfg [2022-01-10 13:18:11,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:18:11,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 13:18:11,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:18:11,507 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 [2022-01-10 13:18:11,508 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 13:18:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 413 states, 407 states have (on average 1.805896805896806) internal successors, (735), 412 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 13:18:11,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:11,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:11,544 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:11,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:11,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2066067391, now seen corresponding path program 1 times [2022-01-10 13:18:11,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:11,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139324173] [2022-01-10 13:18:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:11,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:12,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:12,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139324173] [2022-01-10 13:18:12,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139324173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:12,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:12,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:12,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540912513] [2022-01-10 13:18:12,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:12,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:12,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:12,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:12,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:12,054 INFO L87 Difference]: Start difference. First operand has 413 states, 407 states have (on average 1.805896805896806) internal successors, (735), 412 states have internal predecessors, (735), 0 states have call successors, (0), 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 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:12,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:12,198 INFO L93 Difference]: Finished difference Result 1189 states and 2120 transitions. [2022-01-10 13:18:12,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:18:12,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-01-10 13:18:12,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:12,226 INFO L225 Difference]: With dead ends: 1189 [2022-01-10 13:18:12,226 INFO L226 Difference]: Without dead ends: 795 [2022-01-10 13:18:12,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:12,232 INFO L933 BasicCegarLoop]: 1180 mSDtfsCounter, 1597 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:12,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 1854 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-01-10 13:18:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 769. [2022-01-10 13:18:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 764 states have (on average 1.4476439790575917) internal successors, (1106), 768 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1106 transitions. [2022-01-10 13:18:12,318 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1106 transitions. Word has length 148 [2022-01-10 13:18:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:12,318 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 1106 transitions. [2022-01-10 13:18:12,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1106 transitions. [2022-01-10 13:18:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 13:18:12,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:12,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:12,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:18:12,321 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:12,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:12,321 INFO L85 PathProgramCache]: Analyzing trace with hash 694291665, now seen corresponding path program 1 times [2022-01-10 13:18:12,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:12,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066672583] [2022-01-10 13:18:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:12,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:12,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:12,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066672583] [2022-01-10 13:18:12,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066672583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:12,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:12,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:12,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969795136] [2022-01-10 13:18:12,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:12,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:12,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:12,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:12,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:12,449 INFO L87 Difference]: Start difference. First operand 769 states and 1106 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:12,489 INFO L93 Difference]: Finished difference Result 2269 states and 3254 transitions. [2022-01-10 13:18:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:12,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-01-10 13:18:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:12,494 INFO L225 Difference]: With dead ends: 2269 [2022-01-10 13:18:12,494 INFO L226 Difference]: Without dead ends: 1528 [2022-01-10 13:18:12,496 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 [2022-01-10 13:18:12,497 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 580 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:12,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1750 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2022-01-10 13:18:12,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 771. [2022-01-10 13:18:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 766 states have (on average 1.4464751958224542) internal successors, (1108), 770 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1108 transitions. [2022-01-10 13:18:12,524 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1108 transitions. Word has length 149 [2022-01-10 13:18:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:12,524 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 1108 transitions. [2022-01-10 13:18:12,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:12,525 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1108 transitions. [2022-01-10 13:18:12,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 13:18:12,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:12,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:12,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:18:12,526 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1497990362, now seen corresponding path program 1 times [2022-01-10 13:18:12,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:12,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390751767] [2022-01-10 13:18:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:12,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:12,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:12,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390751767] [2022-01-10 13:18:12,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390751767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:12,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:12,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:18:12,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865668020] [2022-01-10 13:18:12,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:12,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:18:12,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:12,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:18:12,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:12,709 INFO L87 Difference]: Start difference. First operand 771 states and 1108 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:12,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:12,881 INFO L93 Difference]: Finished difference Result 2987 states and 4272 transitions. [2022-01-10 13:18:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:12,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-01-10 13:18:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:12,921 INFO L225 Difference]: With dead ends: 2987 [2022-01-10 13:18:12,921 INFO L226 Difference]: Without dead ends: 2228 [2022-01-10 13:18:12,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:18:12,923 INFO L933 BasicCegarLoop]: 1338 mSDtfsCounter, 1936 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:12,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1936 Valid, 2409 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:18:12,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2022-01-10 13:18:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 1464. [2022-01-10 13:18:12,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1459 states have (on average 1.4276901987662782) internal successors, (2083), 1463 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2083 transitions. [2022-01-10 13:18:13,001 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2083 transitions. Word has length 150 [2022-01-10 13:18:13,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:13,002 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 2083 transitions. [2022-01-10 13:18:13,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2083 transitions. [2022-01-10 13:18:13,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 13:18:13,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:13,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:13,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:18:13,004 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:13,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:13,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1990387518, now seen corresponding path program 1 times [2022-01-10 13:18:13,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:13,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637958393] [2022-01-10 13:18:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:13,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:13,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:13,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637958393] [2022-01-10 13:18:13,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637958393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:13,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:13,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:13,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733023280] [2022-01-10 13:18:13,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:13,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:13,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:13,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:13,146 INFO L87 Difference]: Start difference. First operand 1464 states and 2083 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:13,216 INFO L93 Difference]: Finished difference Result 2573 states and 3652 transitions. [2022-01-10 13:18:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:18:13,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-01-10 13:18:13,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:13,221 INFO L225 Difference]: With dead ends: 2573 [2022-01-10 13:18:13,221 INFO L226 Difference]: Without dead ends: 1125 [2022-01-10 13:18:13,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:13,228 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 69 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:13,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1808 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2022-01-10 13:18:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1125. [2022-01-10 13:18:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1120 states have (on average 1.4223214285714285) internal successors, (1593), 1124 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1593 transitions. [2022-01-10 13:18:13,284 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1593 transitions. Word has length 150 [2022-01-10 13:18:13,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:13,284 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1593 transitions. [2022-01-10 13:18:13,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1593 transitions. [2022-01-10 13:18:13,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 13:18:13,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:13,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:13,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:18:13,286 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:13,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:13,287 INFO L85 PathProgramCache]: Analyzing trace with hash 972069584, now seen corresponding path program 1 times [2022-01-10 13:18:13,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:13,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882198311] [2022-01-10 13:18:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:13,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:13,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:13,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882198311] [2022-01-10 13:18:13,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882198311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:13,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:13,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:13,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711340908] [2022-01-10 13:18:13,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:13,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:13,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:13,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:13,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:13,356 INFO L87 Difference]: Start difference. First operand 1125 states and 1593 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:13,410 INFO L93 Difference]: Finished difference Result 2260 states and 3181 transitions. [2022-01-10 13:18:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:13,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-01-10 13:18:13,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:13,414 INFO L225 Difference]: With dead ends: 2260 [2022-01-10 13:18:13,415 INFO L226 Difference]: Without dead ends: 1510 [2022-01-10 13:18:13,416 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 [2022-01-10 13:18:13,416 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 572 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:13,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 1218 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2022-01-10 13:18:13,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1125. [2022-01-10 13:18:13,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1120 states have (on average 1.4214285714285715) internal successors, (1592), 1124 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1592 transitions. [2022-01-10 13:18:13,492 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1592 transitions. Word has length 153 [2022-01-10 13:18:13,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:13,492 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1592 transitions. [2022-01-10 13:18:13,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1592 transitions. [2022-01-10 13:18:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 13:18:13,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:13,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:13,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:18:13,494 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:13,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:13,494 INFO L85 PathProgramCache]: Analyzing trace with hash -63349958, now seen corresponding path program 1 times [2022-01-10 13:18:13,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:13,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089523695] [2022-01-10 13:18:13,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:13,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:13,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:13,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089523695] [2022-01-10 13:18:13,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089523695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:13,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:13,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:13,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704217693] [2022-01-10 13:18:13,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:13,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:13,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:13,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:13,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:13,586 INFO L87 Difference]: Start difference. First operand 1125 states and 1592 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:13,668 INFO L93 Difference]: Finished difference Result 2446 states and 3549 transitions. [2022-01-10 13:18:13,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:13,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-01-10 13:18:13,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:13,673 INFO L225 Difference]: With dead ends: 2446 [2022-01-10 13:18:13,673 INFO L226 Difference]: Without dead ends: 1504 [2022-01-10 13:18:13,674 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 [2022-01-10 13:18:13,675 INFO L933 BasicCegarLoop]: 784 mSDtfsCounter, 307 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:13,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1240 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:13,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2022-01-10 13:18:13,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1340. [2022-01-10 13:18:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1335 states have (on average 1.4539325842696629) internal successors, (1941), 1339 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1941 transitions. [2022-01-10 13:18:13,733 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1941 transitions. Word has length 154 [2022-01-10 13:18:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:13,734 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1941 transitions. [2022-01-10 13:18:13,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1941 transitions. [2022-01-10 13:18:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 13:18:13,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:13,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:13,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:18:13,736 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1395002236, now seen corresponding path program 1 times [2022-01-10 13:18:13,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:13,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16695811] [2022-01-10 13:18:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:13,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:13,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:13,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16695811] [2022-01-10 13:18:13,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16695811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:13,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:13,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:13,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842070973] [2022-01-10 13:18:13,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:13,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:13,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:13,837 INFO L87 Difference]: Start difference. First operand 1340 states and 1941 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:13,988 INFO L93 Difference]: Finished difference Result 3573 states and 5207 transitions. [2022-01-10 13:18:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:13,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-01-10 13:18:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:13,995 INFO L225 Difference]: With dead ends: 3573 [2022-01-10 13:18:13,995 INFO L226 Difference]: Without dead ends: 2514 [2022-01-10 13:18:13,996 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 [2022-01-10 13:18:13,997 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 502 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:13,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 1616 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:13,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2022-01-10 13:18:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2493. [2022-01-10 13:18:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2488 states have (on average 1.4417202572347267) internal successors, (3587), 2492 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3587 transitions. [2022-01-10 13:18:14,101 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3587 transitions. Word has length 157 [2022-01-10 13:18:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:14,102 INFO L470 AbstractCegarLoop]: Abstraction has 2493 states and 3587 transitions. [2022-01-10 13:18:14,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3587 transitions. [2022-01-10 13:18:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 13:18:14,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:14,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:14,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:18:14,105 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:14,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:14,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2118292669, now seen corresponding path program 1 times [2022-01-10 13:18:14,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:14,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386895087] [2022-01-10 13:18:14,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:14,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:14,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:14,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386895087] [2022-01-10 13:18:14,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386895087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:14,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:14,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:14,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950680087] [2022-01-10 13:18:14,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:14,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:14,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:14,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:14,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:14,203 INFO L87 Difference]: Start difference. First operand 2493 states and 3587 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:14,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:14,405 INFO L93 Difference]: Finished difference Result 6223 states and 8944 transitions. [2022-01-10 13:18:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:18:14,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-01-10 13:18:14,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:14,414 INFO L225 Difference]: With dead ends: 6223 [2022-01-10 13:18:14,415 INFO L226 Difference]: Without dead ends: 3818 [2022-01-10 13:18:14,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:14,420 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 1605 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:14,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 1229 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2022-01-10 13:18:14,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 2498. [2022-01-10 13:18:14,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2493 states have (on average 1.439630966706779) internal successors, (3589), 2497 states have internal predecessors, (3589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3589 transitions. [2022-01-10 13:18:14,545 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3589 transitions. Word has length 157 [2022-01-10 13:18:14,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:14,546 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 3589 transitions. [2022-01-10 13:18:14,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3589 transitions. [2022-01-10 13:18:14,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 13:18:14,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:14,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:14,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:18:14,549 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:14,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1395448808, now seen corresponding path program 1 times [2022-01-10 13:18:14,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:14,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192845281] [2022-01-10 13:18:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:14,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:14,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:14,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192845281] [2022-01-10 13:18:14,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192845281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:14,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:14,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:14,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283835729] [2022-01-10 13:18:14,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:14,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:14,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:14,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:14,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:14,657 INFO L87 Difference]: Start difference. First operand 2498 states and 3589 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:14,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:14,992 INFO L93 Difference]: Finished difference Result 7207 states and 10334 transitions. [2022-01-10 13:18:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:18:14,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-01-10 13:18:14,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:15,005 INFO L225 Difference]: With dead ends: 7207 [2022-01-10 13:18:15,005 INFO L226 Difference]: Without dead ends: 4777 [2022-01-10 13:18:15,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:15,009 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 1228 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:15,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1228 Valid, 1482 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:15,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2022-01-10 13:18:15,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4743. [2022-01-10 13:18:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4743 states, 4738 states have (on average 1.4284508231321233) internal successors, (6768), 4742 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4743 states to 4743 states and 6768 transitions. [2022-01-10 13:18:15,344 INFO L78 Accepts]: Start accepts. Automaton has 4743 states and 6768 transitions. Word has length 157 [2022-01-10 13:18:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:15,345 INFO L470 AbstractCegarLoop]: Abstraction has 4743 states and 6768 transitions. [2022-01-10 13:18:15,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4743 states and 6768 transitions. [2022-01-10 13:18:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 13:18:15,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:15,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:15,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:18:15,349 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:15,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1704253538, now seen corresponding path program 1 times [2022-01-10 13:18:15,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:15,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335288326] [2022-01-10 13:18:15,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:15,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:15,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:15,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335288326] [2022-01-10 13:18:15,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335288326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:15,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:15,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:15,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038647122] [2022-01-10 13:18:15,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:15,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:15,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:15,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:15,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:15,461 INFO L87 Difference]: Start difference. First operand 4743 states and 6768 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:15,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:15,677 INFO L93 Difference]: Finished difference Result 6964 states and 9968 transitions. [2022-01-10 13:18:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:18:15,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-10 13:18:15,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:15,688 INFO L225 Difference]: With dead ends: 6964 [2022-01-10 13:18:15,688 INFO L226 Difference]: Without dead ends: 3970 [2022-01-10 13:18:15,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:15,693 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 47 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:15,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1783 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:15,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2022-01-10 13:18:15,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3970. [2022-01-10 13:18:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 3965 states have (on average 1.4279949558638083) internal successors, (5662), 3969 states have internal predecessors, (5662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 5662 transitions. [2022-01-10 13:18:15,935 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 5662 transitions. Word has length 159 [2022-01-10 13:18:15,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:15,935 INFO L470 AbstractCegarLoop]: Abstraction has 3970 states and 5662 transitions. [2022-01-10 13:18:15,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:15,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 5662 transitions. [2022-01-10 13:18:15,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 13:18:15,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:15,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:15,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:18:15,939 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:15,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:15,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1787379731, now seen corresponding path program 1 times [2022-01-10 13:18:15,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:15,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781153741] [2022-01-10 13:18:15,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:15,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:16,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:16,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781153741] [2022-01-10 13:18:16,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781153741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:16,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:16,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:18:16,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978995570] [2022-01-10 13:18:16,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:16,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:18:16,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:18:16,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:16,091 INFO L87 Difference]: Start difference. First operand 3970 states and 5662 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:16,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:16,471 INFO L93 Difference]: Finished difference Result 10455 states and 14861 transitions. [2022-01-10 13:18:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:16,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-10 13:18:16,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:16,486 INFO L225 Difference]: With dead ends: 10455 [2022-01-10 13:18:16,487 INFO L226 Difference]: Without dead ends: 6529 [2022-01-10 13:18:16,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:18:16,492 INFO L933 BasicCegarLoop]: 1331 mSDtfsCounter, 1756 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:16,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1756 Valid, 2391 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:18:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6529 states. [2022-01-10 13:18:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6529 to 4135. [2022-01-10 13:18:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4135 states, 4130 states have (on average 1.416949152542373) internal successors, (5852), 4134 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4135 states to 4135 states and 5852 transitions. [2022-01-10 13:18:16,768 INFO L78 Accepts]: Start accepts. Automaton has 4135 states and 5852 transitions. Word has length 159 [2022-01-10 13:18:16,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:16,768 INFO L470 AbstractCegarLoop]: Abstraction has 4135 states and 5852 transitions. [2022-01-10 13:18:16,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:16,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4135 states and 5852 transitions. [2022-01-10 13:18:16,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 13:18:16,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:16,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:16,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:18:16,772 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:16,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:16,772 INFO L85 PathProgramCache]: Analyzing trace with hash -97021175, now seen corresponding path program 1 times [2022-01-10 13:18:16,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:16,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379832977] [2022-01-10 13:18:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:16,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:16,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:16,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379832977] [2022-01-10 13:18:16,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379832977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:16,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:16,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:16,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092178352] [2022-01-10 13:18:16,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:16,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:16,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:16,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:16,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:16,861 INFO L87 Difference]: Start difference. First operand 4135 states and 5852 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:17,084 INFO L93 Difference]: Finished difference Result 7464 states and 10553 transitions. [2022-01-10 13:18:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:18:17,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-10 13:18:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:17,091 INFO L225 Difference]: With dead ends: 7464 [2022-01-10 13:18:17,091 INFO L226 Difference]: Without dead ends: 3365 [2022-01-10 13:18:17,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:17,095 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 47 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:17,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1778 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:17,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2022-01-10 13:18:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3365. [2022-01-10 13:18:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 3360 states have (on average 1.4136904761904763) internal successors, (4750), 3364 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4750 transitions. [2022-01-10 13:18:17,250 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4750 transitions. Word has length 159 [2022-01-10 13:18:17,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:17,250 INFO L470 AbstractCegarLoop]: Abstraction has 3365 states and 4750 transitions. [2022-01-10 13:18:17,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4750 transitions. [2022-01-10 13:18:17,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 13:18:17,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:17,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:17,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:18:17,254 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:17,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:17,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2025808977, now seen corresponding path program 1 times [2022-01-10 13:18:17,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:17,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373166622] [2022-01-10 13:18:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:17,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:17,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:17,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373166622] [2022-01-10 13:18:17,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373166622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:17,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:17,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:17,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783090376] [2022-01-10 13:18:17,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:17,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:17,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:17,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:17,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:17,337 INFO L87 Difference]: Start difference. First operand 3365 states and 4750 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:17,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:17,530 INFO L93 Difference]: Finished difference Result 6664 states and 9419 transitions. [2022-01-10 13:18:17,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:17,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2022-01-10 13:18:17,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:17,542 INFO L225 Difference]: With dead ends: 6664 [2022-01-10 13:18:17,542 INFO L226 Difference]: Without dead ends: 4658 [2022-01-10 13:18:17,546 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 [2022-01-10 13:18:17,546 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 557 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:17,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 1470 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2022-01-10 13:18:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3365. [2022-01-10 13:18:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 3360 states have (on average 1.412797619047619) internal successors, (4747), 3364 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4747 transitions. [2022-01-10 13:18:17,715 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4747 transitions. Word has length 162 [2022-01-10 13:18:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:17,716 INFO L470 AbstractCegarLoop]: Abstraction has 3365 states and 4747 transitions. [2022-01-10 13:18:17,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4747 transitions. [2022-01-10 13:18:17,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 13:18:17,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:17,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:17,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:18:17,719 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:17,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:17,720 INFO L85 PathProgramCache]: Analyzing trace with hash -576229558, now seen corresponding path program 1 times [2022-01-10 13:18:17,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:17,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680663719] [2022-01-10 13:18:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:17,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:17,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:17,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680663719] [2022-01-10 13:18:17,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680663719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:17,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:17,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:17,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537764076] [2022-01-10 13:18:17,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:17,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:17,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:17,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:17,827 INFO L87 Difference]: Start difference. First operand 3365 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:18,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:18,089 INFO L93 Difference]: Finished difference Result 7631 states and 11101 transitions. [2022-01-10 13:18:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:18,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2022-01-10 13:18:18,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:18,098 INFO L225 Difference]: With dead ends: 7631 [2022-01-10 13:18:18,098 INFO L226 Difference]: Without dead ends: 4797 [2022-01-10 13:18:18,102 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 [2022-01-10 13:18:18,102 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 305 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:18,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 1219 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2022-01-10 13:18:18,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 4346. [2022-01-10 13:18:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4346 states, 4341 states have (on average 1.4531214005989403) internal successors, (6308), 4345 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4346 states to 4346 states and 6308 transitions. [2022-01-10 13:18:18,323 INFO L78 Accepts]: Start accepts. Automaton has 4346 states and 6308 transitions. Word has length 163 [2022-01-10 13:18:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:18,323 INFO L470 AbstractCegarLoop]: Abstraction has 4346 states and 6308 transitions. [2022-01-10 13:18:18,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:18,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4346 states and 6308 transitions. [2022-01-10 13:18:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 13:18:18,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:18,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:18,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:18:18,327 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:18,327 INFO L85 PathProgramCache]: Analyzing trace with hash -190986002, now seen corresponding path program 1 times [2022-01-10 13:18:18,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:18,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773072301] [2022-01-10 13:18:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:18,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:18,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:18,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773072301] [2022-01-10 13:18:18,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773072301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:18,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:18,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:18,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715145960] [2022-01-10 13:18:18,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:18,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:18,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:18,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:18,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:18,472 INFO L87 Difference]: Start difference. First operand 4346 states and 6308 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:18,797 INFO L93 Difference]: Finished difference Result 10442 states and 15305 transitions. [2022-01-10 13:18:18,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:18,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2022-01-10 13:18:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:18,808 INFO L225 Difference]: With dead ends: 10442 [2022-01-10 13:18:18,809 INFO L226 Difference]: Without dead ends: 6767 [2022-01-10 13:18:18,813 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 [2022-01-10 13:18:18,813 INFO L933 BasicCegarLoop]: 1069 mSDtfsCounter, 490 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:18,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 1597 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:18,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6767 states. [2022-01-10 13:18:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6767 to 6735. [2022-01-10 13:18:19,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6735 states, 6730 states have (on average 1.4419019316493313) internal successors, (9704), 6734 states have internal predecessors, (9704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6735 states to 6735 states and 9704 transitions. [2022-01-10 13:18:19,319 INFO L78 Accepts]: Start accepts. Automaton has 6735 states and 9704 transitions. Word has length 166 [2022-01-10 13:18:19,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:19,319 INFO L470 AbstractCegarLoop]: Abstraction has 6735 states and 9704 transitions. [2022-01-10 13:18:19,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:19,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6735 states and 9704 transitions. [2022-01-10 13:18:19,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 13:18:19,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:19,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:19,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:18:19,324 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:19,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:19,325 INFO L85 PathProgramCache]: Analyzing trace with hash -313888855, now seen corresponding path program 1 times [2022-01-10 13:18:19,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:19,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770268728] [2022-01-10 13:18:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:19,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:19,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:19,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770268728] [2022-01-10 13:18:19,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770268728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:19,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:19,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:19,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126128357] [2022-01-10 13:18:19,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:19,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:19,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:19,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:19,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:19,453 INFO L87 Difference]: Start difference. First operand 6735 states and 9704 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:19,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:19,987 INFO L93 Difference]: Finished difference Result 16187 states and 23493 transitions. [2022-01-10 13:18:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2022-01-10 13:18:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:19,999 INFO L225 Difference]: With dead ends: 16187 [2022-01-10 13:18:19,999 INFO L226 Difference]: Without dead ends: 10426 [2022-01-10 13:18:20,004 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 [2022-01-10 13:18:20,005 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 496 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1570 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 [2022-01-10 13:18:20,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1570 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10426 states. [2022-01-10 13:18:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10426 to 10394. [2022-01-10 13:18:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10394 states, 10389 states have (on average 1.4261237847723554) internal successors, (14816), 10393 states have internal predecessors, (14816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10394 states to 10394 states and 14816 transitions. [2022-01-10 13:18:20,591 INFO L78 Accepts]: Start accepts. Automaton has 10394 states and 14816 transitions. Word has length 166 [2022-01-10 13:18:20,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:20,591 INFO L470 AbstractCegarLoop]: Abstraction has 10394 states and 14816 transitions. [2022-01-10 13:18:20,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 10394 states and 14816 transitions. [2022-01-10 13:18:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-01-10 13:18:20,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:20,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:20,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:18:20,600 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:20,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1387212718, now seen corresponding path program 1 times [2022-01-10 13:18:20,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:20,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897153840] [2022-01-10 13:18:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:20,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:20,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:20,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897153840] [2022-01-10 13:18:20,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897153840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:20,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:20,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:20,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282189994] [2022-01-10 13:18:20,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:20,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:20,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:20,720 INFO L87 Difference]: Start difference. First operand 10394 states and 14816 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:21,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:21,574 INFO L93 Difference]: Finished difference Result 23432 states and 34117 transitions. [2022-01-10 13:18:21,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:21,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2022-01-10 13:18:21,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:21,599 INFO L225 Difference]: With dead ends: 23432 [2022-01-10 13:18:21,599 INFO L226 Difference]: Without dead ends: 15391 [2022-01-10 13:18:21,609 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 [2022-01-10 13:18:21,610 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 327 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1228 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 [2022-01-10 13:18:21,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1228 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15391 states. [2022-01-10 13:18:22,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15391 to 14127. [2022-01-10 13:18:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14127 states, 14122 states have (on average 1.4599915026200254) internal successors, (20618), 14126 states have internal predecessors, (20618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14127 states to 14127 states and 20618 transitions. [2022-01-10 13:18:22,641 INFO L78 Accepts]: Start accepts. Automaton has 14127 states and 20618 transitions. Word has length 170 [2022-01-10 13:18:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:22,641 INFO L470 AbstractCegarLoop]: Abstraction has 14127 states and 20618 transitions. [2022-01-10 13:18:22,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 14127 states and 20618 transitions. [2022-01-10 13:18:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 13:18:22,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:22,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:22,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:18:22,648 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:22,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:22,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1295594290, now seen corresponding path program 1 times [2022-01-10 13:18:22,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:22,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071019857] [2022-01-10 13:18:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:22,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:22,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:22,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071019857] [2022-01-10 13:18:22,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071019857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:22,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:22,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:22,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265429546] [2022-01-10 13:18:22,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:22,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:22,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:22,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:22,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:22,764 INFO L87 Difference]: Start difference. First operand 14127 states and 20618 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:25,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:25,011 INFO L93 Difference]: Finished difference Result 40019 states and 58996 transitions. [2022-01-10 13:18:25,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:25,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-01-10 13:18:25,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:25,052 INFO L225 Difference]: With dead ends: 40019 [2022-01-10 13:18:25,053 INFO L226 Difference]: Without dead ends: 27395 [2022-01-10 13:18:25,070 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 [2022-01-10 13:18:25,070 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 470 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:25,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 1346 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 13:18:25,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27395 states. [2022-01-10 13:18:26,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27395 to 27363. [2022-01-10 13:18:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27363 states, 27358 states have (on average 1.4602675634183786) internal successors, (39950), 27362 states have internal predecessors, (39950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:26,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27363 states to 27363 states and 39950 transitions. [2022-01-10 13:18:26,969 INFO L78 Accepts]: Start accepts. Automaton has 27363 states and 39950 transitions. Word has length 171 [2022-01-10 13:18:26,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:26,969 INFO L470 AbstractCegarLoop]: Abstraction has 27363 states and 39950 transitions. [2022-01-10 13:18:26,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:26,970 INFO L276 IsEmpty]: Start isEmpty. Operand 27363 states and 39950 transitions. [2022-01-10 13:18:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 13:18:26,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:26,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:26,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:18:26,979 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:26,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:26,979 INFO L85 PathProgramCache]: Analyzing trace with hash -714989841, now seen corresponding path program 1 times [2022-01-10 13:18:26,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:26,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536050943] [2022-01-10 13:18:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:26,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:27,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:27,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536050943] [2022-01-10 13:18:27,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536050943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:27,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:27,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:27,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975183736] [2022-01-10 13:18:27,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:27,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:27,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:27,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:27,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:27,204 INFO L87 Difference]: Start difference. First operand 27363 states and 39950 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:29,232 INFO L93 Difference]: Finished difference Result 54880 states and 80093 transitions. [2022-01-10 13:18:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:18:29,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-01-10 13:18:29,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:29,369 INFO L225 Difference]: With dead ends: 54880 [2022-01-10 13:18:29,369 INFO L226 Difference]: Without dead ends: 27676 [2022-01-10 13:18:29,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:29,387 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 1127 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:29,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1127 Valid, 1503 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:29,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27676 states. [2022-01-10 13:18:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27676 to 27524. [2022-01-10 13:18:31,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27524 states, 27519 states have (on average 1.4581198444710928) internal successors, (40126), 27523 states have internal predecessors, (40126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27524 states to 27524 states and 40126 transitions. [2022-01-10 13:18:31,722 INFO L78 Accepts]: Start accepts. Automaton has 27524 states and 40126 transitions. Word has length 171 [2022-01-10 13:18:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:31,723 INFO L470 AbstractCegarLoop]: Abstraction has 27524 states and 40126 transitions. [2022-01-10 13:18:31,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 27524 states and 40126 transitions. [2022-01-10 13:18:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 13:18:31,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:31,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:31,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:18:31,733 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:31,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1323906057, now seen corresponding path program 1 times [2022-01-10 13:18:31,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:31,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211962859] [2022-01-10 13:18:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:31,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:31,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:31,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211962859] [2022-01-10 13:18:31,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211962859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:31,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:31,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:18:31,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431873204] [2022-01-10 13:18:31,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:31,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:18:31,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:31,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:18:31,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:18:31,811 INFO L87 Difference]: Start difference. First operand 27524 states and 40126 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:35,942 INFO L93 Difference]: Finished difference Result 74935 states and 109441 transitions. [2022-01-10 13:18:35,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:18:35,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2022-01-10 13:18:35,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:36,030 INFO L225 Difference]: With dead ends: 74935 [2022-01-10 13:18:36,030 INFO L226 Difference]: Without dead ends: 54836 [2022-01-10 13:18:36,056 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 [2022-01-10 13:18:36,057 INFO L933 BasicCegarLoop]: 1120 mSDtfsCounter, 546 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:36,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 1688 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54836 states. [2022-01-10 13:18:38,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54836 to 27534. [2022-01-10 13:18:38,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27534 states, 27529 states have (on average 1.4579534309273856) internal successors, (40136), 27533 states have internal predecessors, (40136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27534 states to 27534 states and 40136 transitions. [2022-01-10 13:18:38,875 INFO L78 Accepts]: Start accepts. Automaton has 27534 states and 40136 transitions. Word has length 172 [2022-01-10 13:18:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:38,875 INFO L470 AbstractCegarLoop]: Abstraction has 27534 states and 40136 transitions. [2022-01-10 13:18:38,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:38,875 INFO L276 IsEmpty]: Start isEmpty. Operand 27534 states and 40136 transitions. [2022-01-10 13:18:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-10 13:18:38,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:38,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:38,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:18:38,885 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash 914114804, now seen corresponding path program 1 times [2022-01-10 13:18:38,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:38,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776251516] [2022-01-10 13:18:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:38,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:39,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:39,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776251516] [2022-01-10 13:18:39,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776251516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:39,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:39,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:18:39,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257164023] [2022-01-10 13:18:39,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:39,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:18:39,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:39,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:18:39,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:39,015 INFO L87 Difference]: Start difference. First operand 27534 states and 40136 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:43,021 INFO L93 Difference]: Finished difference Result 71763 states and 104622 transitions. [2022-01-10 13:18:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:43,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2022-01-10 13:18:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:43,101 INFO L225 Difference]: With dead ends: 71763 [2022-01-10 13:18:43,101 INFO L226 Difference]: Without dead ends: 46091 [2022-01-10 13:18:43,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:18:43,124 INFO L933 BasicCegarLoop]: 1383 mSDtfsCounter, 1774 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:43,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1774 Valid, 2446 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:43,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46091 states. [2022-01-10 13:18:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46091 to 27871. [2022-01-10 13:18:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27871 states, 27866 states have (on average 1.4538146845618316) internal successors, (40512), 27870 states have internal predecessors, (40512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:45,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27871 states to 27871 states and 40512 transitions. [2022-01-10 13:18:45,914 INFO L78 Accepts]: Start accepts. Automaton has 27871 states and 40512 transitions. Word has length 173 [2022-01-10 13:18:45,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:45,914 INFO L470 AbstractCegarLoop]: Abstraction has 27871 states and 40512 transitions. [2022-01-10 13:18:45,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:45,915 INFO L276 IsEmpty]: Start isEmpty. Operand 27871 states and 40512 transitions. [2022-01-10 13:18:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-10 13:18:45,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:45,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:45,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:18:45,927 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:45,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:45,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1939138832, now seen corresponding path program 1 times [2022-01-10 13:18:45,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:45,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043382954] [2022-01-10 13:18:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:45,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:46,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:46,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043382954] [2022-01-10 13:18:46,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043382954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:46,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:46,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:46,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074987521] [2022-01-10 13:18:46,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:46,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:46,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:46,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:46,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:46,020 INFO L87 Difference]: Start difference. First operand 27871 states and 40512 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:48,345 INFO L93 Difference]: Finished difference Result 45854 states and 66766 transitions. [2022-01-10 13:18:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:18:48,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2022-01-10 13:18:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:48,383 INFO L225 Difference]: With dead ends: 45854 [2022-01-10 13:18:48,383 INFO L226 Difference]: Without dead ends: 25150 [2022-01-10 13:18:48,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:48,399 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 23 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:48,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 1739 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25150 states. [2022-01-10 13:18:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25150 to 25150. [2022-01-10 13:18:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25150 states, 25145 states have (on average 1.4570292304633128) internal successors, (36637), 25149 states have internal predecessors, (36637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25150 states to 25150 states and 36637 transitions. [2022-01-10 13:18:50,625 INFO L78 Accepts]: Start accepts. Automaton has 25150 states and 36637 transitions. Word has length 173 [2022-01-10 13:18:50,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:50,626 INFO L470 AbstractCegarLoop]: Abstraction has 25150 states and 36637 transitions. [2022-01-10 13:18:50,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 25150 states and 36637 transitions. [2022-01-10 13:18:50,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 13:18:50,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:50,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:50,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:18:50,633 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:50,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1498738394, now seen corresponding path program 1 times [2022-01-10 13:18:50,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:50,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955516088] [2022-01-10 13:18:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:50,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:50,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:50,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955516088] [2022-01-10 13:18:50,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955516088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:50,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:50,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:50,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423401198] [2022-01-10 13:18:50,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:50,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:50,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:50,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:50,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:50,753 INFO L87 Difference]: Start difference. First operand 25150 states and 36637 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:55,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:55,394 INFO L93 Difference]: Finished difference Result 70182 states and 104076 transitions. [2022-01-10 13:18:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:55,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-10 13:18:55,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:55,485 INFO L225 Difference]: With dead ends: 70182 [2022-01-10 13:18:55,485 INFO L226 Difference]: Without dead ends: 50118 [2022-01-10 13:18:55,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:18:55,507 INFO L933 BasicCegarLoop]: 1199 mSDtfsCounter, 831 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:55,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 2697 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:55,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50118 states. [2022-01-10 13:18:58,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50118 to 25732. [2022-01-10 13:18:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25732 states, 25727 states have (on average 1.450188517899483) internal successors, (37309), 25731 states have internal predecessors, (37309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:58,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25732 states to 25732 states and 37309 transitions. [2022-01-10 13:18:58,221 INFO L78 Accepts]: Start accepts. Automaton has 25732 states and 37309 transitions. Word has length 175 [2022-01-10 13:18:58,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:58,221 INFO L470 AbstractCegarLoop]: Abstraction has 25732 states and 37309 transitions. [2022-01-10 13:18:58,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:18:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 25732 states and 37309 transitions. [2022-01-10 13:18:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 13:18:58,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:58,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:58,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:18:58,230 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:18:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:58,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2027657433, now seen corresponding path program 1 times [2022-01-10 13:18:58,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:58,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167280238] [2022-01-10 13:18:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:58,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:18:58,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:58,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167280238] [2022-01-10 13:18:58,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167280238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:58,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:58,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:58,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900401559] [2022-01-10 13:18:58,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:58,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:58,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:58,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:58,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:58,375 INFO L87 Difference]: Start difference. First operand 25732 states and 37309 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:19:03,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:19:03,258 INFO L93 Difference]: Finished difference Result 72408 states and 106723 transitions. [2022-01-10 13:19:03,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:19:03,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-10 13:19:03,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:19:03,346 INFO L225 Difference]: With dead ends: 72408 [2022-01-10 13:19:03,347 INFO L226 Difference]: Without dead ends: 51516 [2022-01-10 13:19:03,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:19:03,370 INFO L933 BasicCegarLoop]: 1176 mSDtfsCounter, 837 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:19:03,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 2640 Invalid, 42 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:19:03,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51516 states. [2022-01-10 13:19:06,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51516 to 27586. [2022-01-10 13:19:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27586 states, 27581 states have (on average 1.4306587868460172) internal successors, (39459), 27585 states have internal predecessors, (39459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:19:06,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27586 states to 27586 states and 39459 transitions. [2022-01-10 13:19:06,365 INFO L78 Accepts]: Start accepts. Automaton has 27586 states and 39459 transitions. Word has length 175 [2022-01-10 13:19:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:19:06,366 INFO L470 AbstractCegarLoop]: Abstraction has 27586 states and 39459 transitions. [2022-01-10 13:19:06,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:19:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 27586 states and 39459 transitions. [2022-01-10 13:19:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 13:19:06,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:19:06,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:19:06,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 13:19:06,376 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 13:19:06,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:19:06,377 INFO L85 PathProgramCache]: Analyzing trace with hash -918842234, now seen corresponding path program 1 times [2022-01-10 13:19:06,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:19:06,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194198717] [2022-01-10 13:19:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:19:06,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:19:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:19:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:19:06,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:19:06,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194198717] [2022-01-10 13:19:06,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194198717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:19:06,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:19:06,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:19:06,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601985233] [2022-01-10 13:19:06,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:19:06,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:19:06,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:19:06,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:19:06,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:19:06,502 INFO L87 Difference]: Start difference. First operand 27586 states and 39459 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:19:11,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:19:11,875 INFO L93 Difference]: Finished difference Result 75200 states and 109812 transitions. [2022-01-10 13:19:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:19:11,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-01-10 13:19:11,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:19:11,974 INFO L225 Difference]: With dead ends: 75200 [2022-01-10 13:19:11,974 INFO L226 Difference]: Without dead ends: 54790 [2022-01-10 13:19:11,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:19:11,999 INFO L933 BasicCegarLoop]: 1153 mSDtfsCounter, 893 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:19:11,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 2582 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:19:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54790 states.