/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/heap-data/packet_filter.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:40:45,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:40:45,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:40:45,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 23:40:45,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:40:45,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:40:45,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:40:45,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:40:45,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:40:45,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:40:45,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:40:45,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:40:45,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:40:45,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:40:45,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:40:45,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:40:45,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 23:40:45,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:40:45,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:40:45,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:40:45,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:40:45,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:40:45,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:40:45,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:40:45,781 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:40:45,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:40:45,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:40:45,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:40:45,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:40:45,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:40:45,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:40:45,782 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:40:45,782 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:40:45,782 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:40:45,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:40:45,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:40:45,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:40:45,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:40:45,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:40:45,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:40:45,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:40:45,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:40:45,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:40:45,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:40:45,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:40:45,783 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:40:45,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:40:45,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:40:45,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:40:45,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:40:45,784 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:40:45,784 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:40:45,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:40:46,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:40:46,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:40:46,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:40:46,008 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:40:46,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/packet_filter.i [2022-01-10 23:40:46,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f2a12f8/39b0f35c8f8a4a76819418f7da8c0218/FLAGa12b4e1d0 [2022-01-10 23:40:46,431 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:40:46,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/packet_filter.i [2022-01-10 23:40:46,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f2a12f8/39b0f35c8f8a4a76819418f7da8c0218/FLAGa12b4e1d0 [2022-01-10 23:40:46,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f2a12f8/39b0f35c8f8a4a76819418f7da8c0218 [2022-01-10 23:40:46,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:40:46,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:40:46,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:40:46,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:40:46,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:40:46,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e0a139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46, skipping insertion in model container [2022-01-10 23:40:46,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:40:46,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:40:46,740 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 23:40:46,751 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 23:40:46,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:40:46,772 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:40:46,808 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 23:40:46,810 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 23:40:46,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:40:46,834 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:40:46,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46 WrapperNode [2022-01-10 23:40:46,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:40:46,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:40:46,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:40:46,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:40:46,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,872 INFO L137 Inliner]: procedures = 134, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 252 [2022-01-10 23:40:46,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:40:46,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:40:46,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:40:46,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:40:46,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:40:46,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:40:46,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:40:46,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:40:46,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46" (1/1) ... [2022-01-10 23:40:46,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:40:46,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:40:46,936 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 23:40:46,941 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 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2022-01-10 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:40:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 23:40:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:40:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:40:47,112 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:40:47,118 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:40:52,726 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:40:52,731 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:40:52,731 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 23:40:52,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:40:52 BoogieIcfgContainer [2022-01-10 23:40:52,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:40:52,733 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:40:52,733 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:40:52,734 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:40:52,735 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:40:52" (1/1) ... [2022-01-10 23:40:52,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:40:52 BasicIcfg [2022-01-10 23:40:52,802 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:40:52,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:40:52,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:40:52,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:40:52,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:40:46" (1/4) ... [2022-01-10 23:40:52,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcc958c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:40:52, skipping insertion in model container [2022-01-10 23:40:52,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:40:46" (2/4) ... [2022-01-10 23:40:52,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcc958c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:40:52, skipping insertion in model container [2022-01-10 23:40:52,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:40:52" (3/4) ... [2022-01-10 23:40:52,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcc958c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:40:52, skipping insertion in model container [2022-01-10 23:40:52,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:40:52" (4/4) ... [2022-01-10 23:40:52,807 INFO L111 eAbstractionObserver]: Analyzing ICFG packet_filter.iTransformedIcfg [2022-01-10 23:40:52,810 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:40:52,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:40:52,837 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:40:52,841 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 23:40:52,842 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:40:52,850 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 23:40:52,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 23:40:52,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:40:52,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:40:52,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:40:52,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:40:52,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1722838192, now seen corresponding path program 1 times [2022-01-10 23:40:52,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:40:52,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605400772] [2022-01-10 23:40:52,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:40:52,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:40:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:40:52,960 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 23:40:52,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:40:52,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605400772] [2022-01-10 23:40:52,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605400772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:40:52,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:40:52,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:40:52,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603605701] [2022-01-10 23:40:52,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:40:52,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:40:52,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:40:52,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:40:52,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:40:52,989 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 23:40:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:40:52,999 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2022-01-10 23:40:53,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:40:53,001 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 23:40:53,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:40:53,010 INFO L225 Difference]: With dead ends: 57 [2022-01-10 23:40:53,010 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 23:40:53,012 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 23:40:53,015 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 23:40:53,016 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 23:40:53,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 23:40:53,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-10 23:40:53,040 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 23:40:53,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-01-10 23:40:53,042 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 8 [2022-01-10 23:40:53,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:40:53,043 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-01-10 23:40:53,043 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 23:40:53,044 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-01-10 23:40:53,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 23:40:53,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:40:53,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:40:53,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:40:53,045 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:40:53,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:40:53,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1751467343, now seen corresponding path program 1 times [2022-01-10 23:40:53,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:40:53,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892264708] [2022-01-10 23:40:53,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:40:53,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:40:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:40:53,255 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 23:40:53,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:40:53,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892264708] [2022-01-10 23:40:53,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892264708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:40:53,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:40:53,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:40:53,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761953834] [2022-01-10 23:40:53,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:40:53,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:40:53,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:40:53,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:40:53,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:40:53,261 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 23:40:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:40:53,607 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2022-01-10 23:40:53,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:40:53,608 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 23:40:53,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:40:53,609 INFO L225 Difference]: With dead ends: 58 [2022-01-10 23:40:53,609 INFO L226 Difference]: Without dead ends: 41 [2022-01-10 23:40:53,610 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 23:40:53,610 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:40:53,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 82 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:40:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-10 23:40:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2022-01-10 23:40:53,614 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 23:40:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-01-10 23:40:53,615 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 8 [2022-01-10 23:40:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:40:53,616 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-01-10 23:40:53,616 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 23:40:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-01-10 23:40:53,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 23:40:53,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:40:53,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:40:53,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:40:53,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:40:53,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:40:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash -497566604, now seen corresponding path program 1 times [2022-01-10 23:40:53,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:40:53,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583066193] [2022-01-10 23:40:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:40:53,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:40:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:40:53,731 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 23:40:53,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:40:53,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583066193] [2022-01-10 23:40:53,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583066193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:40:53,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:40:53,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:40:53,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237704950] [2022-01-10 23:40:53,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:40:53,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:40:53,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:40:53,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:40:53,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:40:53,733 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 23:40:54,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:40:54,022 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2022-01-10 23:40:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:40:54,022 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 23:40:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:40:54,024 INFO L225 Difference]: With dead ends: 44 [2022-01-10 23:40:54,024 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 23:40:54,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:40:54,025 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 23:40:54,025 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 23:40:54,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 23:40:54,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-10 23:40:54,028 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 23:40:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-01-10 23:40:54,028 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 10 [2022-01-10 23:40:54,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:40:54,028 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-01-10 23:40:54,029 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 23:40:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-01-10 23:40:54,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 23:40:54,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:40:54,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:40:54,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:40:54,029 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:40:54,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:40:54,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1566503422, now seen corresponding path program 1 times [2022-01-10 23:40:54,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:40:54,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33984918] [2022-01-10 23:40:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:40:54,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:40:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:40:54,253 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 23:40:54,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:40:54,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33984918] [2022-01-10 23:40:54,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33984918] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:40:54,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164877645] [2022-01-10 23:40:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:40:54,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:40:54,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:40:54,255 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 23:40:54,256 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 23:40:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:40:54,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-10 23:40:54,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:40:54,474 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 23:40:54,475 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 23:40:54,556 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 23:40:54,556 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 23:40:54,568 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 23:40:54,612 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 23:40:54,612 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 23:40:54,625 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 23:40:54,679 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-10 23:40:54,680 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 23:40:54,776 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 23:40:54,782 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 23:40:54,858 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 23:40:54,868 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 23:40:54,898 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 23:40:54,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 23:40:55,003 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 23:40:55,264 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 23:40:55,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164877645] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 23:40:55,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 23:40:55,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-01-10 23:40:55,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835769684] [2022-01-10 23:40:55,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 23:40:55,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 23:40:55,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:40:55,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 23:40:55,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=64, Unknown=1, NotChecked=16, Total=110 [2022-01-10 23:40:55,266 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 23:40:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:40:56,613 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2022-01-10 23:40:56,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:40:56,614 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 23:40:56,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:40:56,615 INFO L225 Difference]: With dead ends: 67 [2022-01-10 23:40:56,615 INFO L226 Difference]: Without dead ends: 50 [2022-01-10 23:40:56,615 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 23:40:56,615 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 48 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:40:56,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 163 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 57 Invalid, 0 Unknown, 55 Unchecked, 1.2s Time] [2022-01-10 23:40:56,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-10 23:40:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2022-01-10 23:40:56,619 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 23:40:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-01-10 23:40:56,619 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 14 [2022-01-10 23:40:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:40:56,619 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-01-10 23:40:56,620 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 23:40:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-01-10 23:40:56,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 23:40:56,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:40:56,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:40:56,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 23:40:56,831 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 23:40:56,831 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:40:56,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:40:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash 462157080, now seen corresponding path program 1 times [2022-01-10 23:40:56,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:40:56,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414326075] [2022-01-10 23:40:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:40:56,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:40:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:40:57,018 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 23:40:57,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:40:57,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414326075] [2022-01-10 23:40:57,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414326075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:40:57,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:40:57,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:40:57,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70150425] [2022-01-10 23:40:57,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:40:57,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:40:57,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:40:57,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:40:57,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:40:57,020 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 23:40:57,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:40:57,868 INFO L93 Difference]: Finished difference Result 104 states and 132 transitions. [2022-01-10 23:40:57,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:40:57,869 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 23:40:57,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:40:57,870 INFO L225 Difference]: With dead ends: 104 [2022-01-10 23:40:57,870 INFO L226 Difference]: Without dead ends: 75 [2022-01-10 23:40:57,870 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 23:40:57,871 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 30 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 23:40:57,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 184 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 23:40:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-10 23:40:57,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 47. [2022-01-10 23:40:57,875 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 23:40:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2022-01-10 23:40:57,875 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 16 [2022-01-10 23:40:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:40:57,875 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2022-01-10 23:40:57,875 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 23:40:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2022-01-10 23:40:57,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 23:40:57,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:40:57,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:40:57,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:40:57,876 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:40:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:40:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2140731747, now seen corresponding path program 1 times [2022-01-10 23:40:57,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:40:57,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219090631] [2022-01-10 23:40:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:40:57,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:40:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:40:58,033 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 23:40:58,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:40:58,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219090631] [2022-01-10 23:40:58,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219090631] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:40:58,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078368446] [2022-01-10 23:40:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:40:58,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:40:58,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:40:58,035 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 23:40:58,036 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 23:40:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:40:58,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-10 23:40:58,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:40:58,179 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 23:40:58,179 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 23:40:58,246 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-10 23:40:58,247 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 23:40:58,258 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 23:40:58,268 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 23:40:58,314 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 23:40:58,320 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 23:40:58,434 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 23:40:58,439 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 23:40:58,471 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 23:40:58,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 23:40:58,603 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 23:40:58,941 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 23:40:58,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078368446] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 23:40:58,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 23:40:58,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-01-10 23:40:58,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926258612] [2022-01-10 23:40:58,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 23:40:58,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 23:40:58,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:40:58,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 23:40:58,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=63, Unknown=2, NotChecked=16, Total=110 [2022-01-10 23:40:58,942 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 23:41:00,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:41:00,565 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2022-01-10 23:41:00,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:41:00,566 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 23:41:00,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:41:00,566 INFO L225 Difference]: With dead ends: 60 [2022-01-10 23:41:00,586 INFO L226 Difference]: Without dead ends: 48 [2022-01-10 23:41:00,586 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 23:41:00,587 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, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:41:00,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 221 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 48 Unchecked, 1.5s Time] [2022-01-10 23:41:00,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-10 23:41:00,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-01-10 23:41:00,590 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 23:41:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-01-10 23:41:00,590 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 16 [2022-01-10 23:41:00,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:41:00,590 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-01-10 23:41:00,591 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 23:41:00,591 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-01-10 23:41:00,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 23:41:00,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:41:00,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:41:00,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 23:41:00,805 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 23:41:00,806 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:41:00,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:41:00,806 INFO L85 PathProgramCache]: Analyzing trace with hash 168754073, now seen corresponding path program 1 times [2022-01-10 23:41:00,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:41:00,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083044029] [2022-01-10 23:41:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:41:00,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:41:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:41:01,371 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 23:41:01,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:41:01,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083044029] [2022-01-10 23:41:01,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083044029] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:41:01,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325981525] [2022-01-10 23:41:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:41:01,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:41:01,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:41:01,373 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 23:41:01,374 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 23:41:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:41:01,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-10 23:41:01,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:41:01,795 INFO L353 Elim1Store]: treesize reduction 25, result has 41.9 percent of original size [2022-01-10 23:41:01,795 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 23:41:01,886 INFO L353 Elim1Store]: treesize reduction 86, result has 28.9 percent of original size [2022-01-10 23:41:01,887 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 23:41:01,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:01,988 INFO L353 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-01-10 23:41:01,988 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 23:41:02,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:02,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:02,008 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 23:41:02,021 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 23:41:02,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:02,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:02,039 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 23:41:02,052 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 23:41:02,428 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 23:41:02,646 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 23:41:02,755 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 23:41:03,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:03,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 23:41:03,115 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 23:41:03,232 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 23:41:03,261 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 23:41:03,369 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 23:41:03,410 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 23:41:03,502 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 23:41:03,530 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 23:41:03,950 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 23:41:04,293 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 23:41:04,426 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 23:41:04,551 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 23:41:05,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:05,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:05,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 23:41:05,341 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 23:41:05,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:05,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 23:41:05,372 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 23:41:05,406 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 23:41:05,504 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-10 23:41:05,528 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 23:41:05,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:05,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:05,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 23:41:05,566 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 23:41:05,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:05,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 23:41:05,603 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 23:41:05,861 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 23:41:05,935 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 23:41:06,042 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 23:41:06,048 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 23:41:06,112 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 23:41:06,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 23:41:06,360 INFO L353 Elim1Store]: treesize reduction 25, result has 62.1 percent of original size [2022-01-10 23:41:06,360 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 23:41:06,453 INFO L353 Elim1Store]: treesize reduction 86, result has 46.3 percent of original size [2022-01-10 23:41:06,453 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 23:41:06,494 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 23:41:06,495 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 23:41:06,525 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 23:41:06,818 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 23:41:06,818 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 23:41:06,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:06,889 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-01-10 23:41:06,890 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 23:41:08,571 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 23:41:08,572 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 23:41:08,662 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 23:41:08,680 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 23:41:08,722 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 23:41:08,762 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 23:41:08,857 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 23:41:08,881 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 23:41:08,918 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 23:41:09,066 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 23:41:10,989 INFO L353 Elim1Store]: treesize reduction 214, result has 32.9 percent of original size [2022-01-10 23:41:10,990 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 23:41:11,085 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-01-10 23:41:11,550 INFO L353 Elim1Store]: treesize reduction 214, result has 32.9 percent of original size [2022-01-10 23:41:11,550 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 23:41:12,011 INFO L353 Elim1Store]: treesize reduction 144, result has 23.4 percent of original size [2022-01-10 23:41:12,012 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 23:41:12,095 INFO L353 Elim1Store]: treesize reduction 128, result has 31.9 percent of original size [2022-01-10 23:41:12,096 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 23:41:12,179 INFO L353 Elim1Store]: treesize reduction 505, result has 0.2 percent of original size [2022-01-10 23:41:12,180 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 23:41:12,194 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-10 23:41:12,194 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 23:41:12,375 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 23:41:12,441 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 23:41:12,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325981525] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 23:41:12,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 23:41:12,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 19 [2022-01-10 23:41:12,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000432776] [2022-01-10 23:41:12,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 23:41:12,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 23:41:12,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:41:12,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 23:41:12,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-01-10 23:41:12,442 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 23:41:14,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:41:14,766 INFO L93 Difference]: Finished difference Result 97 states and 124 transitions. [2022-01-10 23:41:14,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 23:41:14,767 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 23:41:14,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:41:14,767 INFO L225 Difference]: With dead ends: 97 [2022-01-10 23:41:14,767 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 23:41:14,768 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 23:41:14,768 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 152 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 23:41:14,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 192 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 249 Invalid, 0 Unknown, 28 Unchecked, 1.9s Time] [2022-01-10 23:41:14,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 23:41:14,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2022-01-10 23:41:14,771 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 23:41:14,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-01-10 23:41:14,772 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 16 [2022-01-10 23:41:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:41:14,772 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-01-10 23:41:14,772 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 23:41:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-01-10 23:41:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 23:41:14,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:41:14,773 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 23:41:14,803 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 23:41:14,987 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 23:41:14,988 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:41:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:41:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash -362003162, now seen corresponding path program 1 times [2022-01-10 23:41:14,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:41:14,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731184057] [2022-01-10 23:41:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:41:14,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:41:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:41:15,321 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 23:41:15,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:41:15,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731184057] [2022-01-10 23:41:15,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731184057] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:41:15,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909294063] [2022-01-10 23:41:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:41:15,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:41:15,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:41:15,323 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 23:41:15,324 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 23:41:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:41:15,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-10 23:41:15,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:41:15,699 INFO L353 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size [2022-01-10 23:41:15,699 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 23:41:15,782 INFO L353 Elim1Store]: treesize reduction 128, result has 21.5 percent of original size [2022-01-10 23:41:15,782 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 23:41:15,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:15,853 INFO L353 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-01-10 23:41:15,854 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 23:41:15,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:15,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:15,867 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 23:41:15,877 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 23:41:15,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:15,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:15,890 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 23:41:15,905 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 23:41:18,641 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 23:41:18,667 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 23:41:27,935 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 23:41:29,554 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 23:41:29,615 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 23:41:35,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:35,349 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 23:41:35,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:35,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:35,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 23:41:35,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 23:41:35,364 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 23:41:35,672 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-10 23:41:35,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:35,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:35,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 23:41:35,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 23:41:35,686 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 23:41:35,783 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 23:41:35,787 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 23:41:35,817 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 23:41:35,826 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 23:41:35,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 23:41:36,098 INFO L353 Elim1Store]: treesize reduction 27, result has 61.4 percent of original size [2022-01-10 23:41:36,098 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 23:41:36,232 INFO L353 Elim1Store]: treesize reduction 128, result has 42.6 percent of original size [2022-01-10 23:41:36,232 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 23:41:36,280 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 23:41:36,280 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 23:41:36,290 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 23:41:36,457 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 23:41:36,457 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 23:41:36,485 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 23:41:36,495 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 23:41:36,542 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 23:41:36,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909294063] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 23:41:36,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 23:41:36,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2022-01-10 23:41:36,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830325896] [2022-01-10 23:41:36,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 23:41:36,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 23:41:36,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:41:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 23:41:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=156, Unknown=7, NotChecked=0, Total=210 [2022-01-10 23:41:36,543 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 23:41:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:41:37,944 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-01-10 23:41:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 23:41:37,944 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 23:41:37,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:41:37,945 INFO L225 Difference]: With dead ends: 76 [2022-01-10 23:41:37,945 INFO L226 Difference]: Without dead ends: 74 [2022-01-10 23:41:37,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=202, Unknown=7, NotChecked=0, Total=272 [2022-01-10 23:41:37,946 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 55 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:41:37,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 190 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 63 Unchecked, 1.3s Time] [2022-01-10 23:41:37,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-10 23:41:37,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 59. [2022-01-10 23:41:37,950 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 23:41:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2022-01-10 23:41:37,952 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 17 [2022-01-10 23:41:37,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:41:37,952 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2022-01-10 23:41:37,952 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 23:41:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2022-01-10 23:41:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 23:41:37,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:41:37,952 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 23:41:37,970 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 23:41:38,163 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 23:41:38,163 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:41:38,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:41:38,164 INFO L85 PathProgramCache]: Analyzing trace with hash -426647290, now seen corresponding path program 1 times [2022-01-10 23:41:38,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:41:38,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128672191] [2022-01-10 23:41:38,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:41:38,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:41:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:41:38,453 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 23:41:38,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:41:38,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128672191] [2022-01-10 23:41:38,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128672191] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:41:38,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724524372] [2022-01-10 23:41:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:41:38,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:41:38,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:41:38,454 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 23:41:38,455 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 23:41:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:41:38,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 73 conjunts are in the unsatisfiable core [2022-01-10 23:41:38,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:41:38,661 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 23:41:38,661 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 23:41:38,726 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 23:41:38,726 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 23:41:38,733 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 23:41:38,765 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 23:41:38,766 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-01-10 23:41:38,774 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 23:41:38,849 INFO L353 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-01-10 23:41:38,849 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 23:41:39,006 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 23:41:39,012 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 23:41:39,019 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 23:41:39,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:39,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:39,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:39,250 INFO L353 Elim1Store]: treesize reduction 56, result has 43.4 percent of original size [2022-01-10 23:41:39,251 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 23:41:39,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:39,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:39,310 INFO L353 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-01-10 23:41:39,311 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 23:41:39,319 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 23:41:39,363 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-10 23:41:39,363 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 23:41:39,545 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 23:41:39,598 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 23:41:39,602 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 23:41:39,626 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 23:41:39,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 23:41:39,712 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 23:41:39,712 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 23:41:39,744 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 23:41:39,841 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 23:41:39,962 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 23:41:40,037 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 23:41:40,073 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 23:41:40,207 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 23:41:40,330 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 23:41:40,456 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 23:41:40,582 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 23:41:40,782 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 23:41:40,807 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 23:41:40,856 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 23:41:41,017 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 23:41:41,240 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 23:41:41,266 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 23:41:41,289 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 23:41:41,519 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 23:41:41,593 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 23:41:41,834 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 23:41:42,010 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 23:41:42,077 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 23:41:42,442 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 23:41:42,485 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 23:41:42,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724524372] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 23:41:42,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 23:41:42,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 14 [2022-01-10 23:41:42,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846067683] [2022-01-10 23:41:42,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 23:41:42,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 23:41:42,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:41:42,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 23:41:42,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=60, Unknown=4, NotChecked=76, Total=182 [2022-01-10 23:41:42,486 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 23:41:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:41:44,065 INFO L93 Difference]: Finished difference Result 101 states and 128 transitions. [2022-01-10 23:41:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:41:44,066 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 23:41:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:41:44,066 INFO L225 Difference]: With dead ends: 101 [2022-01-10 23:41:44,066 INFO L226 Difference]: Without dead ends: 83 [2022-01-10 23:41:44,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=73, Unknown=4, NotChecked=84, Total=210 [2022-01-10 23:41:44,067 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 70 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:41:44,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 183 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 79 Invalid, 0 Unknown, 188 Unchecked, 1.5s Time] [2022-01-10 23:41:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-01-10 23:41:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2022-01-10 23:41:44,072 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 23:41:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2022-01-10 23:41:44,073 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 17 [2022-01-10 23:41:44,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:41:44,073 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2022-01-10 23:41:44,073 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 23:41:44,073 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2022-01-10 23:41:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 23:41:44,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:41:44,074 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 23:41:44,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-10 23:41:44,291 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 23:41:44,291 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:41:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:41:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1066596290, now seen corresponding path program 1 times [2022-01-10 23:41:44,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:41:44,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503766294] [2022-01-10 23:41:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:41:44,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:41:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:41:44,551 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 23:41:44,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:41:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503766294] [2022-01-10 23:41:44,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503766294] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:41:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142562703] [2022-01-10 23:41:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:41:44,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:41:44,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:41:44,552 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 23:41:44,553 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 23:41:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:41:44,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 23:41:44,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:41:44,795 INFO L353 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-01-10 23:41:44,796 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 23:41:44,802 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 23:41:44,808 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 23:41:44,840 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 23:41:44,844 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 23:41:44,864 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 23:41:44,917 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 23:41:44,950 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 23:41:44,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 23:41:44,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142562703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:41:44,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 23:41:44,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-01-10 23:41:44,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656070532] [2022-01-10 23:41:44,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:41:44,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:41:44,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:41:44,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:41:44,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:41:44,951 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 23:41:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:41:45,415 INFO L93 Difference]: Finished difference Result 94 states and 120 transitions. [2022-01-10 23:41:45,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:41:45,416 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 23:41:45,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:41:45,416 INFO L225 Difference]: With dead ends: 94 [2022-01-10 23:41:45,416 INFO L226 Difference]: Without dead ends: 85 [2022-01-10 23:41:45,417 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 23:41:45,417 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 54 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:41:45,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 91 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 23:41:45,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-10 23:41:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2022-01-10 23:41:45,421 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 23:41:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2022-01-10 23:41:45,421 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 18 [2022-01-10 23:41:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:41:45,422 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2022-01-10 23:41:45,422 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 23:41:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2022-01-10 23:41:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 23:41:45,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:41:45,422 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 23:41:45,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 23:41:45,629 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 23:41:45,629 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:41:45,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:41:45,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2016655765, now seen corresponding path program 1 times [2022-01-10 23:41:45,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:41:45,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877379443] [2022-01-10 23:41:45,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:41:45,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:41:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:41:46,040 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 23:41:46,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:41:46,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877379443] [2022-01-10 23:41:46,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877379443] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:41:46,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604103458] [2022-01-10 23:41:46,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:41:46,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:41:46,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:41:46,042 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 23:41:46,043 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 23:41:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:41:46,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 74 conjunts are in the unsatisfiable core [2022-01-10 23:41:46,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:41:46,443 INFO L353 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size [2022-01-10 23:41:46,443 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 23:41:46,534 INFO L353 Elim1Store]: treesize reduction 128, result has 21.5 percent of original size [2022-01-10 23:41:46,534 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 23:41:46,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:46,613 INFO L353 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-01-10 23:41:46,613 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 23:41:46,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:46,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:46,626 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 23:41:46,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:46,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:41:46,639 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 23:41:46,648 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 23:41:46,657 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 23:41:48,128 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 23:41:48,462 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 23:41:48,483 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 23:41:53,369 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 23:41:53,949 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 23:41:54,027 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