/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_LAZY.epf -i ../../../trunk/examples/svcomp/heap-data/packet_filter.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:51:02,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:51:02,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:51:02,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 17:51:02,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:51:02,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:51:02,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:51:02,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:51:02,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:51:02,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:51:02,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:51:02,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:51:02,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:51:02,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:51:02,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:51:02,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:51:02,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 17:51:02,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:51:02,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:51:02,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:51:02,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:51:02,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:51:02,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:51:02,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:51:02,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:51:02,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:51:02,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:51:02,279 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:51:02,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:51:02,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:51:02,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:51:02,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:51:02,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:51:02,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:51:02,279 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:51:02,279 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:51:02,280 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:51:02,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:51:02,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:51:02,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:51:02,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:51:02,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:51:02,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:51:02,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:51:02,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:51:02,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:51:02,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:51:02,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:51:02,281 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:51:02,281 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:51:02,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:51:02,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:51:02,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:51:02,282 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:51:02,282 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:51:02,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:51:02,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:51:02,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:51:02,478 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:51:02,479 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:51:02,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/packet_filter.i [2022-01-10 17:51:02,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009397066/d740df33b5a840768dcc2459559f5281/FLAG42227b006 [2022-01-10 17:51:02,960 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:51:02,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/packet_filter.i [2022-01-10 17:51:02,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009397066/d740df33b5a840768dcc2459559f5281/FLAG42227b006 [2022-01-10 17:51:02,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009397066/d740df33b5a840768dcc2459559f5281 [2022-01-10 17:51:02,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:51:02,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:51:03,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:51:03,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:51:03,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:51:03,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:51:02" (1/1) ... [2022-01-10 17:51:03,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@199d6798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03, skipping insertion in model container [2022-01-10 17:51:03,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:51:02" (1/1) ... [2022-01-10 17:51:03,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:51:03,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:51:03,282 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/packet_filter.i[23925,23938] [2022-01-10 17:51:03,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/packet_filter.i[24159,24172] [2022-01-10 17:51:03,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:51:03,316 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:51:03,341 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/packet_filter.i[23925,23938] [2022-01-10 17:51:03,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/packet_filter.i[24159,24172] [2022-01-10 17:51:03,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:51:03,365 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:51:03,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03 WrapperNode [2022-01-10 17:51:03,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:51:03,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:51:03,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:51:03,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:51:03,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03" (1/1) ... [2022-01-10 17:51:03,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03" (1/1) ... [2022-01-10 17:51:03,406 INFO L137 Inliner]: procedures = 134, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 252 [2022-01-10 17:51:03,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:51:03,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:51:03,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:51:03,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:51:03,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03" (1/1) ... [2022-01-10 17:51:03,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03" (1/1) ... [2022-01-10 17:51:03,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03" (1/1) ... [2022-01-10 17:51:03,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03" (1/1) ... [2022-01-10 17:51:03,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03" (1/1) ... [2022-01-10 17:51:03,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03" (1/1) ... [2022-01-10 17:51:03,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03" (1/1) ... [2022-01-10 17:51:03,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:51:03,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:51:03,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:51:03,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:51:03,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03" (1/1) ... [2022-01-10 17:51:03,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:51:03,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:51:03,481 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 17:51:03,485 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 17:51:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 17:51:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 17:51:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:51:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 17:51:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 17:51:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 17:51:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2022-01-10 17:51:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 17:51:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 17:51:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 17:51:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:51:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 17:51:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:51:03,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:51:03,596 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:51:03,597 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:51:10,116 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:51:10,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:51:10,120 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 17:51:10,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:51:10 BoogieIcfgContainer [2022-01-10 17:51:10,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:51:10,122 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:51:10,122 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:51:10,123 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:51:10,125 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:51:10" (1/1) ... [2022-01-10 17:51:10,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:51:10 BasicIcfg [2022-01-10 17:51:10,230 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:51:10,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:51:10,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:51:10,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:51:10,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:51:02" (1/4) ... [2022-01-10 17:51:10,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c503b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:51:10, skipping insertion in model container [2022-01-10 17:51:10,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:51:03" (2/4) ... [2022-01-10 17:51:10,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c503b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:51:10, skipping insertion in model container [2022-01-10 17:51:10,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:51:10" (3/4) ... [2022-01-10 17:51:10,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c503b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:51:10, skipping insertion in model container [2022-01-10 17:51:10,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:51:10" (4/4) ... [2022-01-10 17:51:10,236 INFO L111 eAbstractionObserver]: Analyzing ICFG packet_filter.iTransformedIcfg [2022-01-10 17:51:10,239 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:51:10,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 17:51:10,268 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:51:10,272 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 17:51:10,272 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 17:51:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 32 states have (on average 1.5) internal successors, (48), 34 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 17:51:10,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 17:51:10,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:10,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:10,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:10,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1722838192, now seen corresponding path program 1 times [2022-01-10 17:51:10,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:10,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970151473] [2022-01-10 17:51:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:10,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:10,428 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 17:51:10,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970151473] [2022-01-10 17:51:10,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970151473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:51:10,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:51:10,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:51:10,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820163208] [2022-01-10 17:51:10,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:51:10,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 17:51:10,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:10,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 17:51:10,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 17:51:10,457 INFO L87 Difference]: Start difference. First operand has 35 states, 32 states have (on average 1.5) internal successors, (48), 34 states have internal predecessors, (48), 0 states have call successors, (0), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 17:51:10,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:10,468 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2022-01-10 17:51:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 17:51:10,469 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-01-10 17:51:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:10,474 INFO L225 Difference]: With dead ends: 57 [2022-01-10 17:51:10,474 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 17:51:10,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 17:51:10,478 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:10,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:51:10,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 17:51:10,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-10 17:51:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 17:51:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-01-10 17:51:10,499 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 8 [2022-01-10 17:51:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:10,499 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-01-10 17:51:10,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 17:51:10,499 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-01-10 17:51:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 17:51:10,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:10,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:10,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:51:10,500 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1751467343, now seen corresponding path program 1 times [2022-01-10 17:51:10,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:10,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596150055] [2022-01-10 17:51:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:10,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:10,661 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 17:51:10,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:10,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596150055] [2022-01-10 17:51:10,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596150055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:51:10,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:51:10,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:51:10,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505306186] [2022-01-10 17:51:10,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:51:10,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:51:10,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:51:10,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:51:10,663 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 17:51:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:11,085 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2022-01-10 17:51:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:51:11,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-01-10 17:51:11,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:11,086 INFO L225 Difference]: With dead ends: 58 [2022-01-10 17:51:11,086 INFO L226 Difference]: Without dead ends: 41 [2022-01-10 17:51:11,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:51:11,087 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:11,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 82 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 17:51:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-10 17:51:11,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2022-01-10 17:51:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.34375) internal successors, (43), 33 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 17:51:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-01-10 17:51:11,092 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 8 [2022-01-10 17:51:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:11,093 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-01-10 17:51:11,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 17:51:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-01-10 17:51:11,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 17:51:11,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:11,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:11,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:51:11,094 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:11,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:11,094 INFO L85 PathProgramCache]: Analyzing trace with hash -497566604, now seen corresponding path program 1 times [2022-01-10 17:51:11,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:11,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422104126] [2022-01-10 17:51:11,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:11,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:11,209 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 17:51:11,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:11,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422104126] [2022-01-10 17:51:11,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422104126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:51:11,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:51:11,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:51:11,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543578274] [2022-01-10 17:51:11,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:51:11,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:51:11,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:51:11,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:51:11,211 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 17:51:11,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:11,511 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2022-01-10 17:51:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:51:11,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-01-10 17:51:11,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:11,512 INFO L225 Difference]: With dead ends: 44 [2022-01-10 17:51:11,513 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 17:51:11,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:51:11,514 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:11,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 94 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 17:51:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 17:51:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-10 17:51:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 17:51:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-01-10 17:51:11,517 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 10 [2022-01-10 17:51:11,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:11,517 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-01-10 17:51:11,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 17:51:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-01-10 17:51:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 17:51:11,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:11,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:11,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:51:11,518 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:11,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1566503422, now seen corresponding path program 1 times [2022-01-10 17:51:11,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:11,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522853751] [2022-01-10 17:51:11,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:11,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:11,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:11,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522853751] [2022-01-10 17:51:11,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522853751] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:51:11,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939711701] [2022-01-10 17:51:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:11,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:11,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:51:11,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:51:11,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 17:51:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:12,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-10 17:51:12,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:51:12,130 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 17:51:12,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 30 [2022-01-10 17:51:12,222 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 17:51:12,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-01-10 17:51:12,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-01-10 17:51:12,278 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 17:51:12,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-01-10 17:51:12,292 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-01-10 17:51:12,338 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-10 17:51:12,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 36 [2022-01-10 17:51:12,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-10 17:51:12,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-10 17:51:12,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:51:12,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:51:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:12,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:51:12,653 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_82 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt| v_ArrVal_82) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.offsetInt|) 0)) (forall ((v_ArrVal_83 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt| v_ArrVal_83) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.offsetInt|) 0))) is different from false [2022-01-10 17:51:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:12,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939711701] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:51:12,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:51:12,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-01-10 17:51:12,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200904865] [2022-01-10 17:51:12,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:51:12,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 17:51:12,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 17:51:12,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=64, Unknown=1, NotChecked=16, Total=110 [2022-01-10 17:51:12,914 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 17:51:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:14,070 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2022-01-10 17:51:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:51:14,071 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 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 14 [2022-01-10 17:51:14,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:14,071 INFO L225 Difference]: With dead ends: 67 [2022-01-10 17:51:14,071 INFO L226 Difference]: Without dead ends: 50 [2022-01-10 17:51:14,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=105, Unknown=1, NotChecked=22, Total=182 [2022-01-10 17:51:14,072 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 48 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:14,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 163 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 57 Invalid, 0 Unknown, 55 Unchecked, 1.0s Time] [2022-01-10 17:51:14,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-10 17:51:14,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2022-01-10 17:51:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 17:51:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-01-10 17:51:14,076 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 14 [2022-01-10 17:51:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:14,076 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-01-10 17:51:14,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 17:51:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-01-10 17:51:14,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 17:51:14,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:14,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:14,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 17:51:14,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:14,295 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:14,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash 462157080, now seen corresponding path program 1 times [2022-01-10 17:51:14,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:14,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228607031] [2022-01-10 17:51:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:14,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:14,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:14,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228607031] [2022-01-10 17:51:14,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228607031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:51:14,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:51:14,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:51:14,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996260979] [2022-01-10 17:51:14,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:51:14,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:51:14,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:14,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:51:14,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:51:14,396 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 17:51:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:15,070 INFO L93 Difference]: Finished difference Result 104 states and 132 transitions. [2022-01-10 17:51:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:51:15,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-01-10 17:51:15,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:15,072 INFO L225 Difference]: With dead ends: 104 [2022-01-10 17:51:15,072 INFO L226 Difference]: Without dead ends: 75 [2022-01-10 17:51:15,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:51:15,073 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 30 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:15,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 184 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 17:51:15,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-10 17:51:15,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 47. [2022-01-10 17:51:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 46 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 17:51:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2022-01-10 17:51:15,077 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 16 [2022-01-10 17:51:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:15,078 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2022-01-10 17:51:15,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 17:51:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2022-01-10 17:51:15,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 17:51:15,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:15,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:15,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:51:15,078 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:15,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:15,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2140731747, now seen corresponding path program 1 times [2022-01-10 17:51:15,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:15,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082628942] [2022-01-10 17:51:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:15,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:15,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:15,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082628942] [2022-01-10 17:51:15,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082628942] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:51:15,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299641224] [2022-01-10 17:51:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:15,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:15,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:51:15,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:51:15,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 17:51:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:15,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-10 17:51:15,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:51:15,424 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 17:51:15,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-01-10 17:51:15,492 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-10 17:51:15,493 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 36 [2022-01-10 17:51:15,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-10 17:51:15,514 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-10 17:51:15,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-10 17:51:15,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-10 17:51:15,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:51:15,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-01-10 17:51:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:15,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:51:15,852 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_251 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt| v_ArrVal_251) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.offsetInt|) 0)) (forall ((v_ArrVal_250 (Array Int Int))) (<= (select (select (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt| v_ArrVal_250) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.offsetInt|) 0)) (forall ((v_ArrVal_250 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt| v_ArrVal_250) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.offsetInt|)))) is different from false [2022-01-10 17:51:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:16,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299641224] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:51:16,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:51:16,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-01-10 17:51:16,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136113586] [2022-01-10 17:51:16,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:51:16,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 17:51:16,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:16,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 17:51:16,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=63, Unknown=2, NotChecked=16, Total=110 [2022-01-10 17:51:16,184 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 17:51:17,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:17,951 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2022-01-10 17:51:17,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:51:17,952 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 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 16 [2022-01-10 17:51:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:17,952 INFO L225 Difference]: With dead ends: 60 [2022-01-10 17:51:17,952 INFO L226 Difference]: Without dead ends: 48 [2022-01-10 17:51:17,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=104, Unknown=3, NotChecked=22, Total=182 [2022-01-10 17:51:17,953 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:17,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 221 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 48 Unchecked, 1.6s Time] [2022-01-10 17:51:17,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-10 17:51:17,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-01-10 17:51:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:51:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-01-10 17:51:17,958 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 16 [2022-01-10 17:51:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:17,958 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-01-10 17:51:17,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 17:51:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-01-10 17:51:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 17:51:17,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:17,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:17,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 17:51:18,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-10 17:51:18,172 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:18,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:18,172 INFO L85 PathProgramCache]: Analyzing trace with hash 168754073, now seen corresponding path program 1 times [2022-01-10 17:51:18,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:18,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837297125] [2022-01-10 17:51:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:18,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:18,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:18,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837297125] [2022-01-10 17:51:18,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837297125] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:51:18,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382751309] [2022-01-10 17:51:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:18,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:18,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:51:18,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:51:18,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 17:51:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:18,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-10 17:51:18,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:51:19,140 INFO L353 Elim1Store]: treesize reduction 25, result has 41.9 percent of original size [2022-01-10 17:51:19,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 87 [2022-01-10 17:51:19,236 INFO L353 Elim1Store]: treesize reduction 86, result has 28.9 percent of original size [2022-01-10 17:51:19,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 100 [2022-01-10 17:51:19,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:19,325 INFO L353 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-01-10 17:51:19,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 74 treesize of output 98 [2022-01-10 17:51:19,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:19,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:19,342 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-01-10 17:51:19,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-10 17:51:19,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:19,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:19,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-01-10 17:51:19,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-10 17:51:19,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 49 [2022-01-10 17:51:19,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2022-01-10 17:51:20,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 49 [2022-01-10 17:51:20,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:20,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:20,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 318 treesize of output 255 [2022-01-10 17:51:20,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-01-10 17:51:20,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-01-10 17:51:20,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-01-10 17:51:20,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-01-10 17:51:20,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 34 [2022-01-10 17:51:20,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 34 [2022-01-10 17:51:21,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 51 [2022-01-10 17:51:21,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 60 [2022-01-10 17:51:21,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 62 [2022-01-10 17:51:21,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 51 [2022-01-10 17:51:22,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:22,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:22,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:22,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 61 [2022-01-10 17:51:22,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:22,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:22,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 125 [2022-01-10 17:51:22,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-01-10 17:51:22,841 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-10 17:51:22,863 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-01-10 17:51:22,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:22,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:22,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:22,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 80 [2022-01-10 17:51:22,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:22,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:22,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 52 [2022-01-10 17:51:23,202 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 20 [2022-01-10 17:51:23,276 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-01-10 17:51:23,374 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-01-10 17:51:23,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:51:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:23,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:51:23,634 INFO L353 Elim1Store]: treesize reduction 25, result has 62.1 percent of original size [2022-01-10 17:51:23,634 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 105 treesize of output 95 [2022-01-10 17:51:23,716 INFO L353 Elim1Store]: treesize reduction 86, result has 46.3 percent of original size [2022-01-10 17:51:23,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 77 treesize of output 112 [2022-01-10 17:51:23,755 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:23,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 110 [2022-01-10 17:51:23,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-01-10 17:51:24,061 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:24,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 42 [2022-01-10 17:51:24,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:24,131 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-01-10 17:51:24,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 1 [2022-01-10 17:51:25,577 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:25,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 243 treesize of output 198 [2022-01-10 17:51:25,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-01-10 17:51:25,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-01-10 17:51:25,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-01-10 17:51:25,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-01-10 17:51:25,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-01-10 17:51:25,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-01-10 17:51:25,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-01-10 17:51:26,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2022-01-10 17:51:27,884 INFO L353 Elim1Store]: treesize reduction 214, result has 32.9 percent of original size [2022-01-10 17:51:27,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 202 treesize of output 182 [2022-01-10 17:51:27,952 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-01-10 17:51:28,442 INFO L353 Elim1Store]: treesize reduction 214, result has 32.9 percent of original size [2022-01-10 17:51:28,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 9 case distinctions, treesize of input 67 treesize of output 109 [2022-01-10 17:51:29,127 INFO L353 Elim1Store]: treesize reduction 144, result has 23.4 percent of original size [2022-01-10 17:51:29,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 58 [2022-01-10 17:51:29,212 INFO L353 Elim1Store]: treesize reduction 128, result has 31.9 percent of original size [2022-01-10 17:51:29,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 70 [2022-01-10 17:51:29,293 INFO L353 Elim1Store]: treesize reduction 505, result has 0.2 percent of original size [2022-01-10 17:51:29,293 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 14 case distinctions, treesize of input 105 treesize of output 1 [2022-01-10 17:51:29,306 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-10 17:51:29,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 67 [2022-01-10 17:51:29,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-01-10 17:51:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:29,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382751309] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:51:29,586 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:51:29,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 19 [2022-01-10 17:51:29,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864696091] [2022-01-10 17:51:29,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:51:29,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 17:51:29,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:29,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 17:51:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-01-10 17:51:29,588 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 17:51:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:32,491 INFO L93 Difference]: Finished difference Result 97 states and 124 transitions. [2022-01-10 17:51:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 17:51:32,491 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 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 16 [2022-01-10 17:51:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:32,492 INFO L225 Difference]: With dead ends: 97 [2022-01-10 17:51:32,492 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 17:51:32,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-01-10 17:51:32,493 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 152 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:32,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 192 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 249 Invalid, 0 Unknown, 28 Unchecked, 2.3s Time] [2022-01-10 17:51:32,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 17:51:32,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2022-01-10 17:51:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 50 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 17:51:32,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-01-10 17:51:32,497 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 16 [2022-01-10 17:51:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:32,498 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-01-10 17:51:32,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 17:51:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-01-10 17:51:32,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 17:51:32,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:32,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:32,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 17:51:32,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:32,712 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:32,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:32,713 INFO L85 PathProgramCache]: Analyzing trace with hash -362003162, now seen corresponding path program 1 times [2022-01-10 17:51:32,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:32,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574146333] [2022-01-10 17:51:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:32,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:33,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:33,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574146333] [2022-01-10 17:51:33,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574146333] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:51:33,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288749446] [2022-01-10 17:51:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:33,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:33,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:51:33,124 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:51:33,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 17:51:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:33,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-10 17:51:33,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:51:33,534 INFO L353 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size [2022-01-10 17:51:33,535 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 106 [2022-01-10 17:51:33,624 INFO L353 Elim1Store]: treesize reduction 128, result has 21.5 percent of original size [2022-01-10 17:51:33,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 93 treesize of output 123 [2022-01-10 17:51:33,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:33,723 INFO L353 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-01-10 17:51:33,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 97 treesize of output 121 [2022-01-10 17:51:33,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:33,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:33,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-01-10 17:51:33,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-10 17:51:33,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:33,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:33,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-01-10 17:51:33,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-10 17:51:37,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 126 [2022-01-10 17:51:37,078 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-01-10 17:51:46,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 83 [2022-01-10 17:51:48,281 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 53 [2022-01-10 17:51:48,371 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 67 [2022-01-10 17:51:54,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:54,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2022-01-10 17:51:54,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:54,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:54,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:54,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:54,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 52 [2022-01-10 17:51:54,740 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-10 17:51:54,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:54,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:54,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:54,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 17:51:54,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 52 [2022-01-10 17:51:54,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-01-10 17:51:54,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:51:54,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:51:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:54,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:51:55,336 INFO L353 Elim1Store]: treesize reduction 27, result has 61.4 percent of original size [2022-01-10 17:51:55,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 113 [2022-01-10 17:51:55,447 INFO L353 Elim1Store]: treesize reduction 128, result has 42.6 percent of original size [2022-01-10 17:51:55,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 100 treesize of output 135 [2022-01-10 17:51:55,484 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:55,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 133 [2022-01-10 17:51:55,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-01-10 17:51:55,685 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:55,686 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 65 [2022-01-10 17:51:55,698 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-01-10 17:51:55,706 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-01-10 17:51:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:55,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288749446] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:51:55,743 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:51:55,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2022-01-10 17:51:55,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141535221] [2022-01-10 17:51:55,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:51:55,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 17:51:55,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:51:55,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 17:51:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=154, Unknown=9, NotChecked=0, Total=210 [2022-01-10 17:51:55,745 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 17:51:57,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:51:57,257 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-01-10 17:51:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 17:51:57,257 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 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 17 [2022-01-10 17:51:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:51:57,258 INFO L225 Difference]: With dead ends: 76 [2022-01-10 17:51:57,258 INFO L226 Difference]: Without dead ends: 74 [2022-01-10 17:51:57,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=200, Unknown=9, NotChecked=0, Total=272 [2022-01-10 17:51:57,258 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 55 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:51:57,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 190 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 63 Unchecked, 1.4s Time] [2022-01-10 17:51:57,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-10 17:51:57,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 59. [2022-01-10 17:51:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 58 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 17:51:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2022-01-10 17:51:57,264 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 17 [2022-01-10 17:51:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:51:57,264 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2022-01-10 17:51:57,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 17:51:57,264 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2022-01-10 17:51:57,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 17:51:57,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:51:57,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:51:57,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 17:51:57,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:57,465 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:51:57,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:51:57,466 INFO L85 PathProgramCache]: Analyzing trace with hash -426647290, now seen corresponding path program 1 times [2022-01-10 17:51:57,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:51:57,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700485905] [2022-01-10 17:51:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:57,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:51:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:57,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:51:57,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700485905] [2022-01-10 17:51:57,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700485905] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:51:57,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053468139] [2022-01-10 17:51:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:51:57,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:51:57,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:51:57,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:51:57,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 17:51:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:51:57,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 73 conjunts are in the unsatisfiable core [2022-01-10 17:51:57,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:51:57,966 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 17:51:57,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 30 [2022-01-10 17:51:58,026 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 17:51:58,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-01-10 17:51:58,034 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-01-10 17:51:58,062 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 17:51:58,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-01-10 17:51:58,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-01-10 17:51:58,154 INFO L353 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-01-10 17:51:58,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 39 [2022-01-10 17:51:58,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-01-10 17:51:58,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-10 17:51:58,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-10 17:51:58,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:58,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:58,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:58,544 INFO L353 Elim1Store]: treesize reduction 56, result has 43.4 percent of original size [2022-01-10 17:51:58,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 58 [2022-01-10 17:51:58,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:58,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:51:58,604 INFO L353 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-01-10 17:51:58,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 37 [2022-01-10 17:51:58,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2022-01-10 17:51:58,643 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-10 17:51:58,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-01-10 17:51:58,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2022-01-10 17:51:58,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:51:58,906 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 17:51:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:51:58,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 17:51:59,018 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 17:51:59,019 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2022-01-10 17:51:59,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-01-10 17:51:59,199 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-01-10 17:51:59,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-01-10 17:51:59,426 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_24 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| Int) (|v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| Int)) (or (not (< |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| |c_#StackHeapBarrierInt|)) (not (= (select (select |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.offsetInt| 8) 18446744073709551616)) (select v_arrayElimArr_24 8))) (not (= (select |c_#validInt| |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4|) 0)) (and (forall ((v_ArrVal_900 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_908 (Array Int Int))) (= (select (select (store (store (store |c_#memory_$Pointer$.baseInt| |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| v_ArrVal_908) |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| v_ArrVal_900) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.baseInt| v_ArrVal_899) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.offsetInt|) 0)) (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_905 (Array Int Int))) (= (select (select (store (store (store |c_#memory_$Pointer$.offsetInt| |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| v_arrayElimArr_24) |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| v_ArrVal_902) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.baseInt| v_ArrVal_905) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.offsetInt|) 0))))) is different from false [2022-01-10 17:51:59,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-01-10 17:51:59,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-01-10 17:51:59,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-01-10 17:51:59,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-01-10 17:51:59,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-01-10 17:52:00,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-01-10 17:52:00,161 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_24 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| Int) (|ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.offsetInt| Int) (|v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| Int)) (or (not (< |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| |c_#StackHeapBarrierInt|)) (not (= (select (select |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.baseInt|) (mod (+ |ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.offsetInt| 8) 18446744073709551616)) (select v_arrayElimArr_24 8))) (not (= (select |c_#validInt| |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4|) 0)) (and (forall ((v_ArrVal_900 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_908 (Array Int Int))) (= (select (select (store (store (store |c_#memory_$Pointer$.baseInt| |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| v_ArrVal_908) |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| v_ArrVal_900) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.baseInt| v_ArrVal_899) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.offsetInt|) 0)) (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_905 (Array Int Int))) (= (select (select (store (store (store |c_#memory_$Pointer$.offsetInt| |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| v_arrayElimArr_24) |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| v_ArrVal_902) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.baseInt| v_ArrVal_905) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.offsetInt|) 0))))) is different from false [2022-01-10 17:52:00,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-01-10 17:52:00,342 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-01-10 17:52:00,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-01-10 17:52:00,635 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_896 Int) (v_arrayElimArr_24 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| Int) (|ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.offsetInt| Int) (v_ArrVal_893 (Array Int Int)) (|v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| Int)) (or (not (= (select v_arrayElimArr_24 8) (select (select (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt| v_ArrVal_893) |c_ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.baseInt|) (mod (+ |ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.offsetInt| 8) 18446744073709551616)))) (not (< |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| |c_#StackHeapBarrierInt|)) (and (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_905 (Array Int Int))) (= (select (select (store (store (store (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt| v_ArrVal_893) |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| v_arrayElimArr_24) |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| v_ArrVal_902) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.baseInt| v_ArrVal_905) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.offsetInt|) 0)) (forall ((v_ArrVal_900 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_892 (Array Int Int)) (v_ArrVal_908 (Array Int Int))) (= (select (select (store (store (store (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt| v_ArrVal_892) |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| v_ArrVal_908) |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| v_ArrVal_900) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.baseInt| v_ArrVal_899) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.offsetInt|) 0))) (not (= (select (store |c_#validInt| |c_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt| v_ArrVal_896) |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4|) 0)))) is different from false [2022-01-10 17:52:00,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-01-10 17:52:00,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-01-10 17:52:01,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-01-10 17:52:01,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-01-10 17:52:01,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-01-10 17:52:01,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-01-10 17:52:01,866 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_896 Int) (v_arrayElimArr_24 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.baseInt_14| Int) (|v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| Int) (|ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.offsetInt| Int) (|v_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt_13| Int) (v_ArrVal_893 (Array Int Int)) (|v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| Int)) (let ((.cse0 (store |c_#validInt| |v_ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.baseInt_14| 1))) (or (not (< |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| |c_#StackHeapBarrierInt|)) (not (= (select v_arrayElimArr_24 8) (select (select (store |c_#memory_$Pointer$.offsetInt| |v_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt_13| v_ArrVal_893) |v_ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.baseInt_14|) (mod (+ |ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.offsetInt| 8) 18446744073709551616)))) (not (= (select (store .cse0 |v_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt_13| v_ArrVal_896) |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4|) 0)) (not (= (select |c_#validInt| |v_ULTIMATE.start_ULTIMATE.start_main_~#new_packet~0#1.baseInt_14|) 0)) (not (<= (mod (select .cse0 |v_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt_13|) 2) 0)) (and (forall ((v_ArrVal_900 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_892 (Array Int Int)) (v_ArrVal_908 (Array Int Int))) (= (select (select (store (store (store (store |c_#memory_$Pointer$.baseInt| |v_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt_13| v_ArrVal_892) |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| v_ArrVal_908) |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| v_ArrVal_900) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.baseInt| v_ArrVal_899) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.offsetInt|) 0)) (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_905 (Array Int Int))) (= (select (select (store (store (store (store |c_#memory_$Pointer$.offsetInt| |v_ULTIMATE.start_ULTIMATE.start_receive_~#packet~0#1.baseInt_13| v_ArrVal_893) |v_v_ULTIMATE.start_append_to_queue_~#p#1.base_12Int_4| v_arrayElimArr_24) |v_ULTIMATE.start_ULTIMATE.start_append_to_queue_~node~0#1.baseInt_3| v_ArrVal_902) |c_ULTIMATE.start_ULTIMATE.start_main_~#normal_queue~0#1.baseInt| v_ArrVal_905) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#prio_queue~0#1.offsetInt|) 0)))))) is different from false [2022-01-10 17:52:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-10 17:52:01,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053468139] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 17:52:01,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 17:52:01,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 14 [2022-01-10 17:52:01,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788585309] [2022-01-10 17:52:01,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 17:52:01,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 17:52:01,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:01,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 17:52:01,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=60, Unknown=4, NotChecked=76, Total=182 [2022-01-10 17:52:01,898 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 17:52:03,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:03,298 INFO L93 Difference]: Finished difference Result 101 states and 128 transitions. [2022-01-10 17:52:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:52:03,298 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 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 17 [2022-01-10 17:52:03,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:03,299 INFO L225 Difference]: With dead ends: 101 [2022-01-10 17:52:03,299 INFO L226 Difference]: Without dead ends: 83 [2022-01-10 17:52:03,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=73, Unknown=4, NotChecked=84, Total=210 [2022-01-10 17:52:03,299 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 70 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:03,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 183 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 79 Invalid, 0 Unknown, 188 Unchecked, 1.3s Time] [2022-01-10 17:52:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-01-10 17:52:03,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2022-01-10 17:52:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 72 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 17:52:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2022-01-10 17:52:03,304 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 17 [2022-01-10 17:52:03,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:03,304 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2022-01-10 17:52:03,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states 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 17:52:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2022-01-10 17:52:03,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 17:52:03,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:03,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:52:03,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 17:52:03,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:52:03,514 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:52:03,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:03,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1066596290, now seen corresponding path program 1 times [2022-01-10 17:52:03,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:03,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063766368] [2022-01-10 17:52:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:03,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:52:03,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:03,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063766368] [2022-01-10 17:52:03,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063766368] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:52:03,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243453029] [2022-01-10 17:52:03,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:03,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:52:03,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:52:03,799 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:52:03,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 17:52:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:03,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 17:52:03,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:52:04,055 INFO L353 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-01-10 17:52:04,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2022-01-10 17:52:04,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-10 17:52:04,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-01-10 17:52:04,095 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2022-01-10 17:52:04,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-01-10 17:52:04,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-01-10 17:52:04,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-01-10 17:52:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:52:04,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 17:52:04,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243453029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:52:04,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 17:52:04,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-01-10 17:52:04,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730180974] [2022-01-10 17:52:04,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:52:04,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:52:04,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:52:04,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:52:04,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-10 17:52:04,225 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 17:52:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:52:04,769 INFO L93 Difference]: Finished difference Result 94 states and 120 transitions. [2022-01-10 17:52:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:52:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-01-10 17:52:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:52:04,771 INFO L225 Difference]: With dead ends: 94 [2022-01-10 17:52:04,771 INFO L226 Difference]: Without dead ends: 85 [2022-01-10 17:52:04,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-01-10 17:52:04,772 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 54 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 17:52:04,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 91 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 17:52:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-10 17:52:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2022-01-10 17:52:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 76 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:52:04,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2022-01-10 17:52:04,785 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 18 [2022-01-10 17:52:04,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:52:04,785 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2022-01-10 17:52:04,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 17:52:04,786 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2022-01-10 17:52:04,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 17:52:04,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:52:04,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:52:04,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-10 17:52:04,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:52:05,000 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:52:05,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:52:05,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2016655765, now seen corresponding path program 1 times [2022-01-10 17:52:05,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:52:05,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825338141] [2022-01-10 17:52:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:05,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:52:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:52:05,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:52:05,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825338141] [2022-01-10 17:52:05,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825338141] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 17:52:05,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444740720] [2022-01-10 17:52:05,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:52:05,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 17:52:05,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:52:05,359 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 17:52:05,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 17:52:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:52:05,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 74 conjunts are in the unsatisfiable core [2022-01-10 17:52:05,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 17:52:05,788 INFO L353 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size [2022-01-10 17:52:05,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 134 treesize of output 107 [2022-01-10 17:52:05,883 INFO L353 Elim1Store]: treesize reduction 128, result has 21.5 percent of original size [2022-01-10 17:52:05,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 93 treesize of output 123 [2022-01-10 17:52:05,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:52:05,964 INFO L353 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-01-10 17:52:05,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 97 treesize of output 121 [2022-01-10 17:52:05,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:52:05,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:52:05,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-01-10 17:52:05,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:52:05,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 17:52:05,997 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-01-10 17:52:06,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-10 17:52:06,016 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-01-10 17:52:07,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 76 [2022-01-10 17:52:07,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 81 [2022-01-10 17:52:07,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-01-10 17:52:12,151 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 112 [2022-01-10 17:52:12,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 83 [2022-01-10 17:52:12,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 77