/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.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:17:17,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:17:17,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:17:17,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:17:17,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:17:17,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:17:17,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:17:17,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:17:17,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:17:17,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:17:17,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:17:17,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:17:17,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:17:17,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:17:17,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:17:17,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:17:17,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:17:17,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:17:17,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:17:17,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:17:17,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:17:17,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:17:17,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:17:17,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:17:17,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:17:17,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:17:17,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:17:17,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:17:17,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:17:17,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:17:17,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:17:17,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:17:17,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:17:17,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:17:17,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:17:17,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:17:17,164 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 13:17:17,193 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:17:17,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:17:17,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:17:17,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:17:17,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:17:17,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:17:17,195 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:17:17,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:17:17,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:17:17,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:17:17,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:17:17,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:17:17,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:17:17,197 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:17:17,197 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:17:17,197 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:17:17,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:17:17,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:17:17,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:17:17,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:17:17,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:17:17,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:17:17,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:17:17,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:17:17,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:17:17,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:17:17,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:17:17,199 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:17:17,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:17:17,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:17:17,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:17:17,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:17:17,201 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:17:17,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:17:17,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:17:17,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:17:17,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:17:17,418 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:17:17,418 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:17:17,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:17:17,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6eb785ff/8dbf78cd1440460f8d9c032c5cdc5360/FLAGb13eb1447 [2022-01-10 13:17:17,915 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:17:17,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:17:17,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6eb785ff/8dbf78cd1440460f8d9c032c5cdc5360/FLAGb13eb1447 [2022-01-10 13:17:18,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6eb785ff/8dbf78cd1440460f8d9c032c5cdc5360 [2022-01-10 13:17:18,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:17:18,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:17:18,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:17:18,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:17:18,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:17:18,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:17:18" (1/1) ... [2022-01-10 13:17:18,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36287e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:18, skipping insertion in model container [2022-01-10 13:17:18,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:17:18" (1/1) ... [2022-01-10 13:17:18,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:17:18,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:17:18,811 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.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15866,15879] [2022-01-10 13:17:18,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:17:18,896 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:17:18,980 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.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15866,15879] [2022-01-10 13:17:19,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:17:19,046 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:17:19,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19 WrapperNode [2022-01-10 13:17:19,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:17:19,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:17:19,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:17:19,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:17:19,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19" (1/1) ... [2022-01-10 13:17:19,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19" (1/1) ... [2022-01-10 13:17:19,144 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1277 [2022-01-10 13:17:19,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:17:19,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:17:19,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:17:19,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:17:19,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19" (1/1) ... [2022-01-10 13:17:19,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19" (1/1) ... [2022-01-10 13:17:19,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19" (1/1) ... [2022-01-10 13:17:19,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19" (1/1) ... [2022-01-10 13:17:19,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19" (1/1) ... [2022-01-10 13:17:19,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19" (1/1) ... [2022-01-10 13:17:19,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19" (1/1) ... [2022-01-10 13:17:19,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:17:19,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:17:19,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:17:19,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:17:19,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19" (1/1) ... [2022-01-10 13:17:19,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:17:19,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:17:19,223 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 13:17:19,251 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 13:17:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:17:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:17:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:17:19,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:17:19,439 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:17:19,440 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:17:20,375 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:17:20,392 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:17:20,392 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:17:20,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:17:20 BoogieIcfgContainer [2022-01-10 13:17:20,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:17:20,396 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:17:20,396 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:17:20,397 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:17:20,400 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:17:20" (1/1) ... [2022-01-10 13:17:21,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:17:21 BasicIcfg [2022-01-10 13:17:21,083 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:17:21,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:17:21,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:17:21,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:17:21,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:17:18" (1/4) ... [2022-01-10 13:17:21,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d44ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:17:21, skipping insertion in model container [2022-01-10 13:17:21,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:17:19" (2/4) ... [2022-01-10 13:17:21,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d44ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:17:21, skipping insertion in model container [2022-01-10 13:17:21,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:17:20" (3/4) ... [2022-01-10 13:17:21,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d44ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:17:21, skipping insertion in model container [2022-01-10 13:17:21,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:17:21" (4/4) ... [2022-01-10 13:17:21,093 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 13:17:21,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:17:21,099 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:17:21,151 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:17:21,158 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 13:17:21,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:17:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 344 states, 342 states have (on average 1.7690058479532165) internal successors, (605), 343 states have internal predecessors, (605), 0 states have call successors, (0), 0 states 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 13:17:21,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 13:17:21,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:21,199 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] [2022-01-10 13:17:21,199 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:21,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:21,207 INFO L85 PathProgramCache]: Analyzing trace with hash 724383536, now seen corresponding path program 1 times [2022-01-10 13:17:21,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:21,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747602] [2022-01-10 13:17:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:21,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:21,826 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 13:17:21,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:21,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747602] [2022-01-10 13:17:21,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:21,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:21,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:21,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749616872] [2022-01-10 13:17:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:21,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:21,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:21,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:21,867 INFO L87 Difference]: Start difference. First operand has 344 states, 342 states have (on average 1.7690058479532165) internal successors, (605), 343 states have internal predecessors, (605), 0 states have call successors, (0), 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 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 13:17:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:22,065 INFO L93 Difference]: Finished difference Result 983 states and 1732 transitions. [2022-01-10 13:17:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:22,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2022-01-10 13:17:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:22,092 INFO L225 Difference]: With dead ends: 983 [2022-01-10 13:17:22,092 INFO L226 Difference]: Without dead ends: 658 [2022-01-10 13:17:22,102 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 13:17:22,106 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 1348 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:22,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 1486 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:17:22,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-01-10 13:17:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 656. [2022-01-10 13:17:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 1.4625954198473283) internal successors, (958), 655 states have internal predecessors, (958), 0 states have call successors, (0), 0 states 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 13:17:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 958 transitions. [2022-01-10 13:17:22,216 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 958 transitions. Word has length 155 [2022-01-10 13:17:22,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:22,217 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 958 transitions. [2022-01-10 13:17:22,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 13:17:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 958 transitions. [2022-01-10 13:17:22,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 13:17:22,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:22,229 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] [2022-01-10 13:17:22,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:17:22,230 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:22,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:22,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1857176189, now seen corresponding path program 1 times [2022-01-10 13:17:22,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:22,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76166709] [2022-01-10 13:17:22,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:22,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:22,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:22,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76166709] [2022-01-10 13:17:22,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76166709] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:22,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:22,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:22,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396177761] [2022-01-10 13:17:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:22,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:22,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:22,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:22,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:22,461 INFO L87 Difference]: Start difference. First operand 656 states and 958 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 13:17:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:22,525 INFO L93 Difference]: Finished difference Result 1930 states and 2810 transitions. [2022-01-10 13:17:22,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:22,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2022-01-10 13:17:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:22,532 INFO L225 Difference]: With dead ends: 1930 [2022-01-10 13:17:22,532 INFO L226 Difference]: Without dead ends: 1302 [2022-01-10 13:17:22,537 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 13:17:22,539 INFO L933 BasicCegarLoop]: 992 mSDtfsCounter, 492 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1486 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 13:17:22,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 1486 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:22,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-01-10 13:17:22,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 658. [2022-01-10 13:17:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 1.461187214611872) internal successors, (960), 657 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 13:17:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 960 transitions. [2022-01-10 13:17:22,583 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 960 transitions. Word has length 156 [2022-01-10 13:17:22,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:22,585 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 960 transitions. [2022-01-10 13:17:22,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 13:17:22,585 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 960 transitions. [2022-01-10 13:17:22,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 13:17:22,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:22,588 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 13:17:22,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:17:22,591 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:22,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1117491605, now seen corresponding path program 1 times [2022-01-10 13:17:22,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:22,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377071001] [2022-01-10 13:17:22,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:22,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:22,806 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 13:17:22,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:22,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377071001] [2022-01-10 13:17:22,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377071001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:22,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:22,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:17:22,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647679138] [2022-01-10 13:17:22,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:22,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:17:22,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:22,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:17:22,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:22,810 INFO L87 Difference]: Start difference. First operand 658 states and 960 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 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 13:17:23,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:23,041 INFO L93 Difference]: Finished difference Result 2540 states and 3690 transitions. [2022-01-10 13:17:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:17:23,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 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 13:17:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:23,050 INFO L225 Difference]: With dead ends: 2540 [2022-01-10 13:17:23,050 INFO L226 Difference]: Without dead ends: 1894 [2022-01-10 13:17:23,052 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 13:17:23,053 INFO L933 BasicCegarLoop]: 1172 mSDtfsCounter, 1487 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:23,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 2536 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:17:23,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2022-01-10 13:17:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1264. [2022-01-10 13:17:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1263 states have (on average 1.442596991290578) internal successors, (1822), 1263 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states 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 13:17:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1822 transitions. [2022-01-10 13:17:23,148 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1822 transitions. Word has length 157 [2022-01-10 13:17:23,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:23,148 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1822 transitions. [2022-01-10 13:17:23,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 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 13:17:23,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1822 transitions. [2022-01-10 13:17:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 13:17:23,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:23,151 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 13:17:23,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:17:23,152 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:23,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:23,153 INFO L85 PathProgramCache]: Analyzing trace with hash -431655247, now seen corresponding path program 1 times [2022-01-10 13:17:23,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:23,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561765560] [2022-01-10 13:17:23,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:23,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:23,290 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 13:17:23,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:23,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561765560] [2022-01-10 13:17:23,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561765560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:23,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:23,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:23,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136943386] [2022-01-10 13:17:23,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:23,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:23,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:23,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:23,293 INFO L87 Difference]: Start difference. First operand 1264 states and 1822 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 13:17:23,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:23,373 INFO L93 Difference]: Finished difference Result 2215 states and 3187 transitions. [2022-01-10 13:17:23,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:23,373 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 13:17:23,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:23,377 INFO L225 Difference]: With dead ends: 2215 [2022-01-10 13:17:23,377 INFO L226 Difference]: Without dead ends: 967 [2022-01-10 13:17:23,379 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 13:17:23,380 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 69 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1544 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 13:17:23,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1544 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:23,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-01-10 13:17:23,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 967. [2022-01-10 13:17:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 966 states have (on average 1.437888198757764) internal successors, (1389), 966 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states 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 13:17:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1389 transitions. [2022-01-10 13:17:23,439 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1389 transitions. Word has length 157 [2022-01-10 13:17:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:23,440 INFO L470 AbstractCegarLoop]: Abstraction has 967 states and 1389 transitions. [2022-01-10 13:17:23,440 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 13:17:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1389 transitions. [2022-01-10 13:17:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 13:17:23,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:23,442 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] [2022-01-10 13:17:23,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:17:23,442 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:23,443 INFO L85 PathProgramCache]: Analyzing trace with hash -699635651, now seen corresponding path program 1 times [2022-01-10 13:17:23,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:23,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672890088] [2022-01-10 13:17:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:23,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:23,555 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 13:17:23,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:23,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672890088] [2022-01-10 13:17:23,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672890088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:23,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:23,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:23,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608343989] [2022-01-10 13:17:23,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:23,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:23,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:23,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:23,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:23,557 INFO L87 Difference]: Start difference. First operand 967 states and 1389 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 13:17:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:23,637 INFO L93 Difference]: Finished difference Result 1919 states and 2748 transitions. [2022-01-10 13:17:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:23,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-01-10 13:17:23,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:23,643 INFO L225 Difference]: With dead ends: 1919 [2022-01-10 13:17:23,643 INFO L226 Difference]: Without dead ends: 1283 [2022-01-10 13:17:23,644 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 13:17:23,645 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 485 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1027 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 13:17:23,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 1027 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:23,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-01-10 13:17:23,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 967. [2022-01-10 13:17:23,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 966 states have (on average 1.4368530020703933) internal successors, (1388), 966 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 13:17:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1388 transitions. [2022-01-10 13:17:23,709 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1388 transitions. Word has length 160 [2022-01-10 13:17:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:23,709 INFO L470 AbstractCegarLoop]: Abstraction has 967 states and 1388 transitions. [2022-01-10 13:17:23,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 13:17:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1388 transitions. [2022-01-10 13:17:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 13:17:23,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:23,712 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] [2022-01-10 13:17:23,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:17:23,713 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:23,713 INFO L85 PathProgramCache]: Analyzing trace with hash 896001876, now seen corresponding path program 1 times [2022-01-10 13:17:23,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:23,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903651814] [2022-01-10 13:17:23,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:23,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:23,828 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 13:17:23,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:23,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903651814] [2022-01-10 13:17:23,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903651814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:23,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:23,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:23,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103910417] [2022-01-10 13:17:23,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:23,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:23,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:23,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:23,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:23,831 INFO L87 Difference]: Start difference. First operand 967 states and 1388 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 13:17:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:23,955 INFO L93 Difference]: Finished difference Result 2148 states and 3168 transitions. [2022-01-10 13:17:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:23,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2022-01-10 13:17:23,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:23,961 INFO L225 Difference]: With dead ends: 2148 [2022-01-10 13:17:23,961 INFO L226 Difference]: Without dead ends: 1361 [2022-01-10 13:17:23,962 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 13:17:23,964 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 315 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1073 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 13:17:23,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 1073 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-01-10 13:17:24,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1191. [2022-01-10 13:17:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 1.4722689075630253) internal successors, (1752), 1190 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states 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 13:17:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1752 transitions. [2022-01-10 13:17:24,051 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1752 transitions. Word has length 161 [2022-01-10 13:17:24,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:24,052 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1752 transitions. [2022-01-10 13:17:24,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 13:17:24,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1752 transitions. [2022-01-10 13:17:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 13:17:24,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:24,055 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] [2022-01-10 13:17:24,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:17:24,056 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1771855546, now seen corresponding path program 1 times [2022-01-10 13:17:24,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:24,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076044402] [2022-01-10 13:17:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:24,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:17:24,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:24,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076044402] [2022-01-10 13:17:24,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076044402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:24,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:24,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:24,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277585281] [2022-01-10 13:17:24,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:24,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:24,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:24,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:24,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:24,213 INFO L87 Difference]: Start difference. First operand 1191 states and 1752 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 13:17:24,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:24,365 INFO L93 Difference]: Finished difference Result 3135 states and 4656 transitions. [2022-01-10 13:17:24,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:24,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-10 13:17:24,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:24,374 INFO L225 Difference]: With dead ends: 3135 [2022-01-10 13:17:24,374 INFO L226 Difference]: Without dead ends: 2224 [2022-01-10 13:17:24,378 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 13:17:24,380 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 421 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:24,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1376 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:24,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2022-01-10 13:17:24,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2222. [2022-01-10 13:17:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 1.4619540747411075) internal successors, (3247), 2221 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states 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 13:17:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3247 transitions. [2022-01-10 13:17:24,566 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3247 transitions. Word has length 164 [2022-01-10 13:17:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:24,566 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 3247 transitions. [2022-01-10 13:17:24,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 13:17:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3247 transitions. [2022-01-10 13:17:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 13:17:24,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:24,569 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] [2022-01-10 13:17:24,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:17:24,570 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:24,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash -721986331, now seen corresponding path program 1 times [2022-01-10 13:17:24,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:24,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53995070] [2022-01-10 13:17:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:24,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:24,681 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 13:17:24,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:24,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53995070] [2022-01-10 13:17:24,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53995070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:24,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:24,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:24,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107779837] [2022-01-10 13:17:24,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:24,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:24,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:24,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:24,683 INFO L87 Difference]: Start difference. First operand 2222 states and 3247 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 13:17:24,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:24,967 INFO L93 Difference]: Finished difference Result 5533 states and 8083 transitions. [2022-01-10 13:17:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:24,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-10 13:17:24,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:24,981 INFO L225 Difference]: With dead ends: 5533 [2022-01-10 13:17:24,981 INFO L226 Difference]: Without dead ends: 3398 [2022-01-10 13:17:24,985 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 13:17:24,985 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1345 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:24,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 1058 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:24,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2022-01-10 13:17:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 2227. [2022-01-10 13:17:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 2226 states have (on average 1.4595687331536389) internal successors, (3249), 2226 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states 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 13:17:25,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3249 transitions. [2022-01-10 13:17:25,176 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3249 transitions. Word has length 164 [2022-01-10 13:17:25,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:25,177 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 3249 transitions. [2022-01-10 13:17:25,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 13:17:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3249 transitions. [2022-01-10 13:17:25,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 13:17:25,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:25,181 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] [2022-01-10 13:17:25,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:17:25,182 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:25,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:25,182 INFO L85 PathProgramCache]: Analyzing trace with hash 247341589, now seen corresponding path program 1 times [2022-01-10 13:17:25,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:25,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173096178] [2022-01-10 13:17:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:25,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:25,320 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 13:17:25,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:25,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173096178] [2022-01-10 13:17:25,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173096178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:25,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:25,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:25,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265984886] [2022-01-10 13:17:25,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:25,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:25,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:25,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:25,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:25,322 INFO L87 Difference]: Start difference. First operand 2227 states and 3249 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 13:17:25,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:25,717 INFO L93 Difference]: Finished difference Result 6395 states and 9315 transitions. [2022-01-10 13:17:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:25,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-10 13:17:25,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:25,732 INFO L225 Difference]: With dead ends: 6395 [2022-01-10 13:17:25,732 INFO L226 Difference]: Without dead ends: 4236 [2022-01-10 13:17:25,737 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 13:17:25,737 INFO L933 BasicCegarLoop]: 772 mSDtfsCounter, 1053 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1218 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 13:17:25,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 1218 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:25,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4236 states. [2022-01-10 13:17:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4236 to 4234. [2022-01-10 13:17:26,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4234 states, 4233 states have (on average 1.4467280888258918) internal successors, (6124), 4233 states have internal predecessors, (6124), 0 states have call successors, (0), 0 states 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 13:17:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 6124 transitions. [2022-01-10 13:17:26,133 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 6124 transitions. Word has length 164 [2022-01-10 13:17:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:26,134 INFO L470 AbstractCegarLoop]: Abstraction has 4234 states and 6124 transitions. [2022-01-10 13:17:26,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 13:17:26,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 6124 transitions. [2022-01-10 13:17:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 13:17:26,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:26,139 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 13:17:26,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:17:26,140 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2073772804, now seen corresponding path program 1 times [2022-01-10 13:17:26,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:26,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576376510] [2022-01-10 13:17:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:26,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:26,293 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 13:17:26,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:26,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576376510] [2022-01-10 13:17:26,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576376510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:26,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:26,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:26,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376890564] [2022-01-10 13:17:26,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:26,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:26,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:26,298 INFO L87 Difference]: Start difference. First operand 4234 states and 6124 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 13:17:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:26,657 INFO L93 Difference]: Finished difference Result 6186 states and 8987 transitions. [2022-01-10 13:17:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:26,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 13:17:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:26,671 INFO L225 Difference]: With dead ends: 6186 [2022-01-10 13:17:26,671 INFO L226 Difference]: Without dead ends: 3539 [2022-01-10 13:17:26,675 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 13:17:26,676 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 47 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1519 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 13:17:26,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1519 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:26,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3539 states. [2022-01-10 13:17:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3539 to 3539. [2022-01-10 13:17:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3539 states, 3538 states have (on average 1.4468626342566422) internal successors, (5119), 3538 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states 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 13:17:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 5119 transitions. [2022-01-10 13:17:27,036 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 5119 transitions. Word has length 166 [2022-01-10 13:17:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:27,037 INFO L470 AbstractCegarLoop]: Abstraction has 3539 states and 5119 transitions. [2022-01-10 13:17:27,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 13:17:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 5119 transitions. [2022-01-10 13:17:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 13:17:27,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:27,042 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 13:17:27,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:17:27,043 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:27,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:27,043 INFO L85 PathProgramCache]: Analyzing trace with hash 272236015, now seen corresponding path program 1 times [2022-01-10 13:17:27,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:27,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923498635] [2022-01-10 13:17:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:27,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:27,160 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 13:17:27,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:27,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923498635] [2022-01-10 13:17:27,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923498635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:27,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:27,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:27,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111476119] [2022-01-10 13:17:27,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:27,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:27,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:27,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:27,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:27,163 INFO L87 Difference]: Start difference. First operand 3539 states and 5119 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 13:17:27,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:27,837 INFO L93 Difference]: Finished difference Result 10250 states and 14770 transitions. [2022-01-10 13:17:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:27,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 13:17:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:27,864 INFO L225 Difference]: With dead ends: 10250 [2022-01-10 13:17:27,864 INFO L226 Difference]: Without dead ends: 6789 [2022-01-10 13:17:27,870 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 13:17:27,871 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 908 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:27,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1041 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:27,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6789 states. [2022-01-10 13:17:28,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6789 to 6787. [2022-01-10 13:17:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6787 states, 6786 states have (on average 1.4272030651340997) internal successors, (9685), 6786 states have internal predecessors, (9685), 0 states have call successors, (0), 0 states 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 13:17:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6787 states to 6787 states and 9685 transitions. [2022-01-10 13:17:28,520 INFO L78 Accepts]: Start accepts. Automaton has 6787 states and 9685 transitions. Word has length 166 [2022-01-10 13:17:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:28,520 INFO L470 AbstractCegarLoop]: Abstraction has 6787 states and 9685 transitions. [2022-01-10 13:17:28,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 13:17:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 6787 states and 9685 transitions. [2022-01-10 13:17:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 13:17:28,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:28,529 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 13:17:28,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:17:28,530 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1929242256, now seen corresponding path program 1 times [2022-01-10 13:17:28,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:28,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476795747] [2022-01-10 13:17:28,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:28,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:28,701 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 13:17:28,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:28,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476795747] [2022-01-10 13:17:28,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476795747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:28,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:28,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:17:28,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998926314] [2022-01-10 13:17:28,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:28,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:17:28,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:28,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:17:28,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:28,704 INFO L87 Difference]: Start difference. First operand 6787 states and 9685 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 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 13:17:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:29,748 INFO L93 Difference]: Finished difference Result 17874 states and 25448 transitions. [2022-01-10 13:17:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:17:29,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 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 13:17:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:29,774 INFO L225 Difference]: With dead ends: 17874 [2022-01-10 13:17:29,774 INFO L226 Difference]: Without dead ends: 11137 [2022-01-10 13:17:29,785 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 13:17:29,786 INFO L933 BasicCegarLoop]: 1098 mSDtfsCounter, 1635 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:29,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1635 Valid, 2003 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:17:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11137 states. [2022-01-10 13:17:30,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11137 to 7082. [2022-01-10 13:17:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7082 states, 7081 states have (on average 1.4140658099138539) internal successors, (10013), 7081 states have internal predecessors, (10013), 0 states have call successors, (0), 0 states 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 13:17:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7082 states to 7082 states and 10013 transitions. [2022-01-10 13:17:30,429 INFO L78 Accepts]: Start accepts. Automaton has 7082 states and 10013 transitions. Word has length 166 [2022-01-10 13:17:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:30,429 INFO L470 AbstractCegarLoop]: Abstraction has 7082 states and 10013 transitions. [2022-01-10 13:17:30,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 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 13:17:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 7082 states and 10013 transitions. [2022-01-10 13:17:30,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 13:17:30,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:30,439 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 13:17:30,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:17:30,439 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:30,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash 718969844, now seen corresponding path program 1 times [2022-01-10 13:17:30,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:30,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124723457] [2022-01-10 13:17:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:30,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:30,535 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 13:17:30,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:30,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124723457] [2022-01-10 13:17:30,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124723457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:30,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:30,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:30,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192827668] [2022-01-10 13:17:30,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:30,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:30,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:30,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:30,537 INFO L87 Difference]: Start difference. First operand 7082 states and 10013 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 13:17:30,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:30,963 INFO L93 Difference]: Finished difference Result 12639 states and 17908 transitions. [2022-01-10 13:17:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:30,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 13:17:30,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:30,976 INFO L225 Difference]: With dead ends: 12639 [2022-01-10 13:17:30,976 INFO L226 Difference]: Without dead ends: 5753 [2022-01-10 13:17:30,986 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 13:17:30,986 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 47 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1513 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 13:17:30,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1513 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:30,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2022-01-10 13:17:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 5753. [2022-01-10 13:17:31,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 1.4127260083449236) internal successors, (8126), 5752 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states 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 13:17:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 8126 transitions. [2022-01-10 13:17:31,477 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 8126 transitions. Word has length 166 [2022-01-10 13:17:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:31,478 INFO L470 AbstractCegarLoop]: Abstraction has 5753 states and 8126 transitions. [2022-01-10 13:17:31,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 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 13:17:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 8126 transitions. [2022-01-10 13:17:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-10 13:17:31,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:31,485 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] [2022-01-10 13:17:31,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:17:31,486 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:31,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:31,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2002810610, now seen corresponding path program 1 times [2022-01-10 13:17:31,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:31,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472657337] [2022-01-10 13:17:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:31,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:31,566 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 13:17:31,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:31,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472657337] [2022-01-10 13:17:31,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472657337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:31,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:31,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:31,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774738337] [2022-01-10 13:17:31,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:31,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:31,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:31,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:31,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:31,569 INFO L87 Difference]: Start difference. First operand 5753 states and 8126 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 13:17:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:32,241 INFO L93 Difference]: Finished difference Result 11235 states and 15963 transitions. [2022-01-10 13:17:32,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:32,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2022-01-10 13:17:32,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:32,256 INFO L225 Difference]: With dead ends: 11235 [2022-01-10 13:17:32,256 INFO L226 Difference]: Without dead ends: 7815 [2022-01-10 13:17:32,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:32,261 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 469 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1212 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 13:17:32,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 1212 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2022-01-10 13:17:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 5753. [2022-01-10 13:17:32,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5752 states have (on average 1.4122044506258693) internal successors, (8123), 5752 states have internal predecessors, (8123), 0 states have call successors, (0), 0 states 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 13:17:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 8123 transitions. [2022-01-10 13:17:32,641 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 8123 transitions. Word has length 169 [2022-01-10 13:17:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:32,641 INFO L470 AbstractCegarLoop]: Abstraction has 5753 states and 8123 transitions. [2022-01-10 13:17:32,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 13:17:32,641 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 8123 transitions. [2022-01-10 13:17:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-01-10 13:17:32,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:32,648 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] [2022-01-10 13:17:32,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:17:32,649 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:32,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1621961599, now seen corresponding path program 1 times [2022-01-10 13:17:32,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:32,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164224904] [2022-01-10 13:17:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:32,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:32,767 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 13:17:32,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:32,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164224904] [2022-01-10 13:17:32,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164224904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:32,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:32,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:32,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327409507] [2022-01-10 13:17:32,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:32,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:32,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:32,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:32,769 INFO L87 Difference]: Start difference. First operand 5753 states and 8123 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 13:17:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:33,377 INFO L93 Difference]: Finished difference Result 13337 states and 19433 transitions. [2022-01-10 13:17:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:33,378 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 13:17:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:33,393 INFO L225 Difference]: With dead ends: 13337 [2022-01-10 13:17:33,394 INFO L226 Difference]: Without dead ends: 8549 [2022-01-10 13:17:33,403 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 13:17:33,403 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 307 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1044 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 13:17:33,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1044 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:33,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8549 states. [2022-01-10 13:17:33,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8549 to 7691. [2022-01-10 13:17:33,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7691 states, 7690 states have (on average 1.4550065019505851) internal successors, (11189), 7690 states have internal predecessors, (11189), 0 states have call successors, (0), 0 states 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 13:17:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7691 states to 7691 states and 11189 transitions. [2022-01-10 13:17:34,010 INFO L78 Accepts]: Start accepts. Automaton has 7691 states and 11189 transitions. Word has length 170 [2022-01-10 13:17:34,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:34,011 INFO L470 AbstractCegarLoop]: Abstraction has 7691 states and 11189 transitions. [2022-01-10 13:17:34,011 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 13:17:34,011 INFO L276 IsEmpty]: Start isEmpty. Operand 7691 states and 11189 transitions. [2022-01-10 13:17:34,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-10 13:17:34,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:34,018 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 13:17:34,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:17:34,018 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:34,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:34,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1332035753, now seen corresponding path program 1 times [2022-01-10 13:17:34,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:34,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522246024] [2022-01-10 13:17:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:34,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:34,174 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 13:17:34,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:34,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522246024] [2022-01-10 13:17:34,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522246024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:34,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:34,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:34,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651392937] [2022-01-10 13:17:34,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:34,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:34,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:34,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:34,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:34,176 INFO L87 Difference]: Start difference. First operand 7691 states and 11189 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 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 13:17:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:34,670 INFO L93 Difference]: Finished difference Result 9900 states and 14394 transitions. [2022-01-10 13:17:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:34,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 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 13:17:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:34,680 INFO L225 Difference]: With dead ends: 9900 [2022-01-10 13:17:34,680 INFO L226 Difference]: Without dead ends: 6391 [2022-01-10 13:17:34,686 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 13:17:34,686 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 407 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:34,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 1332 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:34,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2022-01-10 13:17:35,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 6389. [2022-01-10 13:17:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6389 states, 6388 states have (on average 1.4430181590482154) internal successors, (9218), 6388 states have internal predecessors, (9218), 0 states have call successors, (0), 0 states 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 13:17:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6389 states to 6389 states and 9218 transitions. [2022-01-10 13:17:35,303 INFO L78 Accepts]: Start accepts. Automaton has 6389 states and 9218 transitions. Word has length 173 [2022-01-10 13:17:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:35,303 INFO L470 AbstractCegarLoop]: Abstraction has 6389 states and 9218 transitions. [2022-01-10 13:17:35,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 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 13:17:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 6389 states and 9218 transitions. [2022-01-10 13:17:35,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-10 13:17:35,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:35,309 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 13:17:35,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:17:35,309 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:35,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash 571717262, now seen corresponding path program 1 times [2022-01-10 13:17:35,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:35,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363277225] [2022-01-10 13:17:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:35,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:35,453 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 13:17:35,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:35,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363277225] [2022-01-10 13:17:35,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363277225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:35,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:35,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:35,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893908784] [2022-01-10 13:17:35,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:35,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:35,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:35,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:35,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:35,455 INFO L87 Difference]: Start difference. First operand 6389 states and 9218 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 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 13:17:36,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:36,302 INFO L93 Difference]: Finished difference Result 15039 states and 21981 transitions. [2022-01-10 13:17:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:36,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 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 13:17:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:36,316 INFO L225 Difference]: With dead ends: 15039 [2022-01-10 13:17:36,317 INFO L226 Difference]: Without dead ends: 9773 [2022-01-10 13:17:36,326 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 13:17:36,326 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 409 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1317 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 13:17:36,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 1317 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:36,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9773 states. [2022-01-10 13:17:37,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9773 to 9771. [2022-01-10 13:17:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9771 states, 9770 states have (on average 1.4323439099283521) internal successors, (13994), 9770 states have internal predecessors, (13994), 0 states have call successors, (0), 0 states 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 13:17:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9771 states to 9771 states and 13994 transitions. [2022-01-10 13:17:37,227 INFO L78 Accepts]: Start accepts. Automaton has 9771 states and 13994 transitions. Word has length 173 [2022-01-10 13:17:37,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:37,228 INFO L470 AbstractCegarLoop]: Abstraction has 9771 states and 13994 transitions. [2022-01-10 13:17:37,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 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 13:17:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 9771 states and 13994 transitions. [2022-01-10 13:17:37,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 13:17:37,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:37,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:37,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:17:37,236 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1015431958, now seen corresponding path program 1 times [2022-01-10 13:17:37,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:37,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979337997] [2022-01-10 13:17:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:37,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:37,358 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 13:17:37,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:37,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979337997] [2022-01-10 13:17:37,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979337997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:37,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:37,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:37,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678756103] [2022-01-10 13:17:37,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:37,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:37,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:37,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:37,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:37,360 INFO L87 Difference]: Start difference. First operand 9771 states and 13994 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 13:17:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:38,394 INFO L93 Difference]: Finished difference Result 22089 states and 32380 transitions. [2022-01-10 13:17:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:38,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2022-01-10 13:17:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:38,412 INFO L225 Difference]: With dead ends: 22089 [2022-01-10 13:17:38,412 INFO L226 Difference]: Without dead ends: 14714 [2022-01-10 13:17:38,421 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 13:17:38,421 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 301 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1021 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 13:17:38,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 1021 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:38,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14714 states. [2022-01-10 13:17:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14714 to 13576. [2022-01-10 13:17:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13576 states, 13575 states have (on average 1.4666666666666666) internal successors, (19910), 13575 states have internal predecessors, (19910), 0 states have call successors, (0), 0 states 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 13:17:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13576 states to 13576 states and 19910 transitions. [2022-01-10 13:17:39,538 INFO L78 Accepts]: Start accepts. Automaton has 13576 states and 19910 transitions. Word has length 177 [2022-01-10 13:17:39,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:39,538 INFO L470 AbstractCegarLoop]: Abstraction has 13576 states and 19910 transitions. [2022-01-10 13:17:39,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 13:17:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 13576 states and 19910 transitions. [2022-01-10 13:17:39,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 13:17:39,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:39,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:17:39,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:17:39,545 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:39,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:39,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2117846626, now seen corresponding path program 1 times [2022-01-10 13:17:39,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:39,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281084273] [2022-01-10 13:17:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:39,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:39,690 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 13:17:39,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:39,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281084273] [2022-01-10 13:17:39,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281084273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:39,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:39,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:39,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616527555] [2022-01-10 13:17:39,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:39,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:39,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:39,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:39,693 INFO L87 Difference]: Start difference. First operand 13576 states and 19910 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 13:17:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:42,326 INFO L93 Difference]: Finished difference Result 37680 states and 55991 transitions. [2022-01-10 13:17:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:42,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-10 13:17:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:42,373 INFO L225 Difference]: With dead ends: 37680 [2022-01-10 13:17:42,373 INFO L226 Difference]: Without dead ends: 26021 [2022-01-10 13:17:42,391 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 13:17:42,392 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 374 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:42,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 1102 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 13:17:42,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26021 states. [2022-01-10 13:17:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26021 to 26019. [2022-01-10 13:17:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26019 states, 26018 states have (on average 1.4690598816204166) internal successors, (38222), 26018 states have internal predecessors, (38222), 0 states have call successors, (0), 0 states 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 13:17:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26019 states to 26019 states and 38222 transitions. [2022-01-10 13:17:44,643 INFO L78 Accepts]: Start accepts. Automaton has 26019 states and 38222 transitions. Word has length 178 [2022-01-10 13:17:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:44,643 INFO L470 AbstractCegarLoop]: Abstraction has 26019 states and 38222 transitions. [2022-01-10 13:17:44,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 13:17:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 26019 states and 38222 transitions. [2022-01-10 13:17:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 13:17:44,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:44,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:44,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:17:44,655 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:44,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1364565853, now seen corresponding path program 1 times [2022-01-10 13:17:44,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:44,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456491935] [2022-01-10 13:17:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:44,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:44,812 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 13:17:44,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:44,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456491935] [2022-01-10 13:17:44,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456491935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:44,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:44,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:17:44,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878259747] [2022-01-10 13:17:44,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:44,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:17:44,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:44,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:17:44,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:17:44,814 INFO L87 Difference]: Start difference. First operand 26019 states and 38222 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 13:17:47,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:47,170 INFO L93 Difference]: Finished difference Result 34758 states and 50926 transitions. [2022-01-10 13:17:47,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:17:47,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-10 13:17:47,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:47,224 INFO L225 Difference]: With dead ends: 34758 [2022-01-10 13:17:47,224 INFO L226 Difference]: Without dead ends: 26021 [2022-01-10 13:17:47,240 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 13:17:47,241 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 954 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:17:47,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 1240 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:47,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26021 states. [2022-01-10 13:17:49,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26021 to 25915. [2022-01-10 13:17:49,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25915 states, 25914 states have (on average 1.469591726479895) internal successors, (38083), 25914 states have internal predecessors, (38083), 0 states have call successors, (0), 0 states 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 13:17:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25915 states to 25915 states and 38083 transitions. [2022-01-10 13:17:49,858 INFO L78 Accepts]: Start accepts. Automaton has 25915 states and 38083 transitions. Word has length 178 [2022-01-10 13:17:49,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:49,859 INFO L470 AbstractCegarLoop]: Abstraction has 25915 states and 38083 transitions. [2022-01-10 13:17:49,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 13:17:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand 25915 states and 38083 transitions. [2022-01-10 13:17:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 13:17:49,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:49,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:49,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:17:49,872 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:49,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:49,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1765697948, now seen corresponding path program 1 times [2022-01-10 13:17:49,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:49,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551156924] [2022-01-10 13:17:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:49,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:49,996 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 13:17:49,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:49,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551156924] [2022-01-10 13:17:49,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551156924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:49,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:49,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:17:49,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796675012] [2022-01-10 13:17:49,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:49,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:17:49,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:49,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:17:49,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:17:49,998 INFO L87 Difference]: Start difference. First operand 25915 states and 38083 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 13:17:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:17:54,121 INFO L93 Difference]: Finished difference Result 60358 states and 88630 transitions. [2022-01-10 13:17:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:17:54,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2022-01-10 13:17:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:17:54,255 INFO L225 Difference]: With dead ends: 60358 [2022-01-10 13:17:54,255 INFO L226 Difference]: Without dead ends: 51621 [2022-01-10 13:17:54,270 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 13:17:54,271 INFO L933 BasicCegarLoop]: 944 mSDtfsCounter, 458 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1424 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 13:17:54,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 1424 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:17:54,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51621 states. [2022-01-10 13:17:56,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51621 to 25925. [2022-01-10 13:17:56,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25925 states, 25924 states have (on average 1.4694105847862984) internal successors, (38093), 25924 states have internal predecessors, (38093), 0 states have call successors, (0), 0 states 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 13:17:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25925 states to 25925 states and 38093 transitions. [2022-01-10 13:17:56,928 INFO L78 Accepts]: Start accepts. Automaton has 25925 states and 38093 transitions. Word has length 179 [2022-01-10 13:17:56,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:17:56,928 INFO L470 AbstractCegarLoop]: Abstraction has 25925 states and 38093 transitions. [2022-01-10 13:17:56,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 13:17:56,929 INFO L276 IsEmpty]: Start isEmpty. Operand 25925 states and 38093 transitions. [2022-01-10 13:17:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 13:17:56,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:17:56,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:17:56,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:17:56,938 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:17:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:17:56,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2104445154, now seen corresponding path program 1 times [2022-01-10 13:17:56,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:17:56,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653104342] [2022-01-10 13:17:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:17:56,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:17:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:17:57,252 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 13:17:57,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:17:57,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653104342] [2022-01-10 13:17:57,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653104342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:17:57,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:17:57,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:17:57,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650676377] [2022-01-10 13:17:57,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:17:57,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:17:57,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:17:57,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:17:57,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:17:57,254 INFO L87 Difference]: Start difference. First operand 25925 states and 38093 transitions. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 13:18:01,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:01,797 INFO L93 Difference]: Finished difference Result 64275 states and 94615 transitions. [2022-01-10 13:18:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:01,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2022-01-10 13:18:01,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:01,862 INFO L225 Difference]: With dead ends: 64275 [2022-01-10 13:18:01,862 INFO L226 Difference]: Without dead ends: 43357 [2022-01-10 13:18:01,885 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 13:18:01,886 INFO L933 BasicCegarLoop]: 1130 mSDtfsCounter, 1344 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:18:01,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1344 Valid, 2447 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:01,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43357 states. [2022-01-10 13:18:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43357 to 26224. [2022-01-10 13:18:04,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26224 states, 26223 states have (on average 1.4649353620867178) internal successors, (38415), 26223 states have internal predecessors, (38415), 0 states have call successors, (0), 0 states 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 13:18:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26224 states to 26224 states and 38415 transitions. [2022-01-10 13:18:04,880 INFO L78 Accepts]: Start accepts. Automaton has 26224 states and 38415 transitions. Word has length 180 [2022-01-10 13:18:04,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:04,880 INFO L470 AbstractCegarLoop]: Abstraction has 26224 states and 38415 transitions. [2022-01-10 13:18:04,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 13:18:04,881 INFO L276 IsEmpty]: Start isEmpty. Operand 26224 states and 38415 transitions. [2022-01-10 13:18:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 13:18:04,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:04,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:04,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:18:04,890 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:04,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:04,890 INFO L85 PathProgramCache]: Analyzing trace with hash -215679102, now seen corresponding path program 1 times [2022-01-10 13:18:04,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:04,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995925666] [2022-01-10 13:18:04,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:04,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:04,981 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 13:18:04,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:04,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995925666] [2022-01-10 13:18:04,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995925666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:04,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:04,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:04,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059511470] [2022-01-10 13:18:04,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:04,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:04,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:04,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:04,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:04,983 INFO L87 Difference]: Start difference. First operand 26224 states and 38415 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 13:18:07,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:07,741 INFO L93 Difference]: Finished difference Result 32506 states and 47632 transitions. [2022-01-10 13:18:07,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:18:07,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2022-01-10 13:18:07,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:07,768 INFO L225 Difference]: With dead ends: 32506 [2022-01-10 13:18:07,768 INFO L226 Difference]: Without dead ends: 23754 [2022-01-10 13:18:07,777 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 13:18:07,778 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 17 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1472 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 13:18:07,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1472 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23754 states. [2022-01-10 13:18:10,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23754 to 23754. [2022-01-10 13:18:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23754 states, 23753 states have (on average 1.4696669894329137) internal successors, (34909), 23753 states have internal predecessors, (34909), 0 states have call successors, (0), 0 states 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 13:18:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23754 states to 23754 states and 34909 transitions. [2022-01-10 13:18:10,423 INFO L78 Accepts]: Start accepts. Automaton has 23754 states and 34909 transitions. Word has length 180 [2022-01-10 13:18:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:18:10,423 INFO L470 AbstractCegarLoop]: Abstraction has 23754 states and 34909 transitions. [2022-01-10 13:18:10,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 13:18:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 23754 states and 34909 transitions. [2022-01-10 13:18:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-10 13:18:10,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:18:10,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:18:10,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:18:10,431 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:18:10,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:18:10,431 INFO L85 PathProgramCache]: Analyzing trace with hash 738983539, now seen corresponding path program 1 times [2022-01-10 13:18:10,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:18:10,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367615644] [2022-01-10 13:18:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:18:10,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:18:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:18:10,595 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 13:18:10,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:18:10,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367615644] [2022-01-10 13:18:10,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367615644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:18:10,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:18:10,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:18:10,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684496586] [2022-01-10 13:18:10,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:18:10,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:18:10,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:18:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:18:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:18:10,597 INFO L87 Difference]: Start difference. First operand 23754 states and 34909 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 13:18:15,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:18:15,722 INFO L93 Difference]: Finished difference Result 66608 states and 99750 transitions. [2022-01-10 13:18:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:18:15,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-01-10 13:18:15,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:18:15,785 INFO L225 Difference]: With dead ends: 66608 [2022-01-10 13:18:15,785 INFO L226 Difference]: Without dead ends: 47605 [2022-01-10 13:18:15,802 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 13:18:15,803 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 743 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 2225 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 13:18:15,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 2225 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:18:15,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47605 states.