./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 06:44:04,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 06:44:04,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 06:44:04,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 06:44:04,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 06:44:04,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 06:44:04,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 06:44:04,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 06:44:04,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 06:44:04,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 06:44:04,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 06:44:04,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 06:44:04,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 06:44:04,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 06:44:04,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 06:44:04,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 06:44:04,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 06:44:04,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 06:44:04,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 06:44:04,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 06:44:04,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 06:44:04,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 06:44:04,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 06:44:04,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 06:44:04,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 06:44:04,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 06:44:04,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 06:44:04,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 06:44:04,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 06:44:04,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 06:44:04,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 06:44:04,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 06:44:04,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 06:44:04,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 06:44:04,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 06:44:04,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 06:44:04,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 06:44:04,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 06:44:04,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 06:44:04,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 06:44:04,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 06:44:04,707 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 06:44:04,734 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 06:44:04,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 06:44:04,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 06:44:04,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 06:44:04,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 06:44:04,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 06:44:04,737 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 06:44:04,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 06:44:04,737 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 06:44:04,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 06:44:04,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 06:44:04,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 06:44:04,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 06:44:04,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 06:44:04,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 06:44:04,739 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 06:44:04,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 06:44:04,739 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 06:44:04,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 06:44:04,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 06:44:04,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 06:44:04,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 06:44:04,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 06:44:04,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 06:44:04,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 06:44:04,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 06:44:04,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 06:44:04,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 06:44:04,740 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 06:44:04,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 06:44:04,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 06:44:04,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 06:44:04,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2021-11-23 06:44:04,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 06:44:04,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 06:44:04,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 06:44:04,961 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 06:44:04,962 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 06:44:04,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2021-11-23 06:44:05,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218f6ba33/c01379513bad48f5b4597b7d6c343e16/FLAG174bfab3d [2021-11-23 06:44:05,533 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 06:44:05,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2021-11-23 06:44:05,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218f6ba33/c01379513bad48f5b4597b7d6c343e16/FLAG174bfab3d [2021-11-23 06:44:06,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218f6ba33/c01379513bad48f5b4597b7d6c343e16 [2021-11-23 06:44:06,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 06:44:06,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 06:44:06,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 06:44:06,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 06:44:06,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 06:44:06,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237be76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06, skipping insertion in model container [2021-11-23 06:44:06,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 06:44:06,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 06:44:06,498 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2021-11-23 06:44:06,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2021-11-23 06:44:06,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2021-11-23 06:44:06,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2021-11-23 06:44:06,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 06:44:06,623 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 06:44:06,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2021-11-23 06:44:06,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2021-11-23 06:44:06,686 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2021-11-23 06:44:06,687 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2021-11-23 06:44:06,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 06:44:06,732 INFO L208 MainTranslator]: Completed translation [2021-11-23 06:44:06,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06 WrapperNode [2021-11-23 06:44:06,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 06:44:06,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 06:44:06,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 06:44:06,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 06:44:06,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,817 INFO L137 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 22, calls inlined = 26, statements flattened = 1340 [2021-11-23 06:44:06,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 06:44:06,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 06:44:06,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 06:44:06,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 06:44:06,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 06:44:06,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 06:44:06,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 06:44:06,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 06:44:06,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06" (1/1) ... [2021-11-23 06:44:06,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 06:44:06,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:06,967 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) [2021-11-23 06:44:06,992 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 [2021-11-23 06:44:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 06:44:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 06:44:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 06:44:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 06:44:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 06:44:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 06:44:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 06:44:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 06:44:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 06:44:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 06:44:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 06:44:07,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 06:44:07,236 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 06:44:07,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 06:44:08,039 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 06:44:08,045 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 06:44:08,048 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-23 06:44:08,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:44:08 BoogieIcfgContainer [2021-11-23 06:44:08,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 06:44:08,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 06:44:08,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 06:44:08,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 06:44:08,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:44:06" (1/3) ... [2021-11-23 06:44:08,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363e0a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:44:08, skipping insertion in model container [2021-11-23 06:44:08,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:06" (2/3) ... [2021-11-23 06:44:08,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363e0a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:44:08, skipping insertion in model container [2021-11-23 06:44:08,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:44:08" (3/3) ... [2021-11-23 06:44:08,056 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-2.i [2021-11-23 06:44:08,066 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 06:44:08,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-23 06:44:08,104 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 06:44:08,113 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 [2021-11-23 06:44:08,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-23 06:44:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 265 states have (on average 1.6566037735849057) internal successors, (439), 279 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 06:44:08,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:08,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:08,144 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:08,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:08,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1119402824, now seen corresponding path program 1 times [2021-11-23 06:44:08,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:08,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542178512] [2021-11-23 06:44:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:08,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:44:08,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:08,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542178512] [2021-11-23 06:44:08,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542178512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:44:08,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:44:08,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 06:44:08,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22814847] [2021-11-23 06:44:08,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:44:08,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 06:44:08,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 06:44:08,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 06:44:08,364 INFO L87 Difference]: Start difference. First operand has 280 states, 265 states have (on average 1.6566037735849057) internal successors, (439), 279 states have internal predecessors, (439), 0 states have call successors, (0), 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) [2021-11-23 06:44:08,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:08,408 INFO L93 Difference]: Finished difference Result 552 states and 869 transitions. [2021-11-23 06:44:08,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 06:44:08,409 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 [2021-11-23 06:44:08,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:08,422 INFO L225 Difference]: With dead ends: 552 [2021-11-23 06:44:08,423 INFO L226 Difference]: Without dead ends: 270 [2021-11-23 06:44:08,428 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 [2021-11-23 06:44:08,431 INFO L933 BasicCegarLoop]: 343 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, 343 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 [2021-11-23 06:44:08,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:44:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-23 06:44:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-11-23 06:44:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 257 states have (on average 1.3190661478599222) internal successors, (339), 269 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 339 transitions. [2021-11-23 06:44:08,483 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 339 transitions. Word has length 8 [2021-11-23 06:44:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:08,484 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 339 transitions. [2021-11-23 06:44:08,484 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) [2021-11-23 06:44:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 339 transitions. [2021-11-23 06:44:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 06:44:08,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:08,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:08,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 06:44:08,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:08,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1348757205, now seen corresponding path program 1 times [2021-11-23 06:44:08,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:08,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463103373] [2021-11-23 06:44:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:08,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:44:08,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:08,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463103373] [2021-11-23 06:44:08,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463103373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:44:08,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:44:08,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:44:08,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269611323] [2021-11-23 06:44:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:44:08,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:44:08,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:44:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:44:08,569 INFO L87 Difference]: Start difference. First operand 270 states and 339 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) [2021-11-23 06:44:08,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:08,881 INFO L93 Difference]: Finished difference Result 595 states and 747 transitions. [2021-11-23 06:44:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:44:08,881 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 [2021-11-23 06:44:08,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:08,883 INFO L225 Difference]: With dead ends: 595 [2021-11-23 06:44:08,883 INFO L226 Difference]: Without dead ends: 445 [2021-11-23 06:44:08,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:44:08,884 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 207 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 06:44:08,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 862 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 06:44:08,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-23 06:44:08,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 272. [2021-11-23 06:44:08,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 259 states have (on average 1.3166023166023166) internal successors, (341), 271 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 341 transitions. [2021-11-23 06:44:08,890 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 341 transitions. Word has length 10 [2021-11-23 06:44:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:08,890 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 341 transitions. [2021-11-23 06:44:08,891 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) [2021-11-23 06:44:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 341 transitions. [2021-11-23 06:44:08,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 06:44:08,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:08,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:08,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 06:44:08,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:08,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:08,892 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-23 06:44:08,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:08,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704933269] [2021-11-23 06:44:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:08,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:08,911 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:44:08,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332072304] [2021-11-23 06:44:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:08,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:08,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:08,928 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) [2021-11-23 06:44:08,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 06:44:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:09,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:44:09,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:44:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:44:09,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:44:09,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:09,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704933269] [2021-11-23 06:44:09,237 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:44:09,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332072304] [2021-11-23 06:44:09,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332072304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:44:09,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:44:09,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:44:09,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226183271] [2021-11-23 06:44:09,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:44:09,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:44:09,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:09,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:44:09,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:44:09,240 INFO L87 Difference]: Start difference. First operand 272 states and 341 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:09,286 INFO L93 Difference]: Finished difference Result 561 states and 709 transitions. [2021-11-23 06:44:09,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:44:09,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-23 06:44:09,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:09,288 INFO L225 Difference]: With dead ends: 561 [2021-11-23 06:44:09,288 INFO L226 Difference]: Without dead ends: 293 [2021-11-23 06:44:09,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:44:09,289 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 9 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:44:09,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 623 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:44:09,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-23 06:44:09,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 292. [2021-11-23 06:44:09,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 279 states have (on average 1.2939068100358424) internal successors, (361), 291 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 361 transitions. [2021-11-23 06:44:09,294 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 361 transitions. Word has length 44 [2021-11-23 06:44:09,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:09,295 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 361 transitions. [2021-11-23 06:44:09,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 361 transitions. [2021-11-23 06:44:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 06:44:09,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:09,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:09,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 06:44:09,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:09,528 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:09,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:09,528 INFO L85 PathProgramCache]: Analyzing trace with hash -821195099, now seen corresponding path program 1 times [2021-11-23 06:44:09,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:09,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3184047] [2021-11-23 06:44:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:09,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:09,544 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:44:09,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412415596] [2021-11-23 06:44:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:09,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:09,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:09,550 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) [2021-11-23 06:44:09,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 06:44:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:09,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 06:44:09,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:44:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:44:09,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:44:09,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:09,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3184047] [2021-11-23 06:44:09,762 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:44:09,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412415596] [2021-11-23 06:44:09,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412415596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:44:09,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:44:09,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:44:09,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404759799] [2021-11-23 06:44:09,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:44:09,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:44:09,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:09,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:44:09,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:44:09,764 INFO L87 Difference]: Start difference. First operand 292 states and 361 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:09,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:09,815 INFO L93 Difference]: Finished difference Result 573 states and 711 transitions. [2021-11-23 06:44:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:44:09,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-23 06:44:09,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:09,817 INFO L225 Difference]: With dead ends: 573 [2021-11-23 06:44:09,817 INFO L226 Difference]: Without dead ends: 285 [2021-11-23 06:44:09,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:44:09,818 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 327 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:44:09,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 637 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:44:09,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-23 06:44:09,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 278. [2021-11-23 06:44:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 265 states have (on average 1.2830188679245282) internal successors, (340), 277 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 340 transitions. [2021-11-23 06:44:09,823 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 340 transitions. Word has length 44 [2021-11-23 06:44:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:09,824 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 340 transitions. [2021-11-23 06:44:09,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:09,824 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 340 transitions. [2021-11-23 06:44:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 06:44:09,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:09,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:09,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 06:44:10,038 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,SelfDestructingSolverStorable3 [2021-11-23 06:44:10,039 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:10,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-23 06:44:10,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:10,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907447649] [2021-11-23 06:44:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:10,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:10,070 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:44:10,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647339269] [2021-11-23 06:44:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:10,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:10,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:10,072 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) [2021-11-23 06:44:10,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 06:44:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:10,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 06:44:10,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:44:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:44:10,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:44:10,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:10,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907447649] [2021-11-23 06:44:10,323 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:44:10,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647339269] [2021-11-23 06:44:10,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647339269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:44:10,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:44:10,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:44:10,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300694716] [2021-11-23 06:44:10,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:44:10,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:44:10,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:10,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:44:10,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:44:10,325 INFO L87 Difference]: Start difference. First operand 278 states and 340 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:10,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:10,391 INFO L93 Difference]: Finished difference Result 490 states and 604 transitions. [2021-11-23 06:44:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 06:44:10,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-23 06:44:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:10,393 INFO L225 Difference]: With dead ends: 490 [2021-11-23 06:44:10,393 INFO L226 Difference]: Without dead ends: 488 [2021-11-23 06:44:10,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:44:10,394 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 266 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 06:44:10,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 1450 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 06:44:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-23 06:44:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 276. [2021-11-23 06:44:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 264 states have (on average 1.2803030303030303) internal successors, (338), 275 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 338 transitions. [2021-11-23 06:44:10,400 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 338 transitions. Word has length 44 [2021-11-23 06:44:10,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:10,400 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 338 transitions. [2021-11-23 06:44:10,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 338 transitions. [2021-11-23 06:44:10,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 06:44:10,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:10,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:10,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-23 06:44:10,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:10,620 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash -432623516, now seen corresponding path program 1 times [2021-11-23 06:44:10,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:10,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375448042] [2021-11-23 06:44:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:10,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:10,642 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:44:10,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142243051] [2021-11-23 06:44:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:10,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:10,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:10,644 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) [2021-11-23 06:44:10,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 06:44:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:10,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 06:44:10,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:44:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:44:10,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:44:10,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:10,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375448042] [2021-11-23 06:44:10,944 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:44:10,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142243051] [2021-11-23 06:44:10,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142243051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:44:10,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:44:10,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:44:10,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740946395] [2021-11-23 06:44:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:44:10,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 06:44:10,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:10,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 06:44:10,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:44:10,946 INFO L87 Difference]: Start difference. First operand 276 states and 338 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2021-11-23 06:44:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:11,034 INFO L93 Difference]: Finished difference Result 1130 states and 1400 transitions. [2021-11-23 06:44:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 06:44:11,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) Word has length 51 [2021-11-23 06:44:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:11,037 INFO L225 Difference]: With dead ends: 1130 [2021-11-23 06:44:11,037 INFO L226 Difference]: Without dead ends: 858 [2021-11-23 06:44:11,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:44:11,039 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1069 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 06:44:11,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 1334 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 06:44:11,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-11-23 06:44:11,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 367. [2021-11-23 06:44:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 356 states have (on average 1.2584269662921348) internal successors, (448), 366 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 448 transitions. [2021-11-23 06:44:11,050 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 448 transitions. Word has length 51 [2021-11-23 06:44:11,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:11,050 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 448 transitions. [2021-11-23 06:44:11,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2021-11-23 06:44:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 448 transitions. [2021-11-23 06:44:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 06:44:11,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:11,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:11,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 06:44:11,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:11,267 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:11,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:11,268 INFO L85 PathProgramCache]: Analyzing trace with hash 586889260, now seen corresponding path program 1 times [2021-11-23 06:44:11,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:11,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581951683] [2021-11-23 06:44:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:11,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:11,328 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:44:11,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36353009] [2021-11-23 06:44:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:11,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:11,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:11,330 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) [2021-11-23 06:44:11,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 06:44:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:11,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 06:44:11,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:44:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:44:11,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:44:11,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:11,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581951683] [2021-11-23 06:44:11,971 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:44:11,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36353009] [2021-11-23 06:44:11,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36353009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:44:11,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:44:11,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:44:11,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211708117] [2021-11-23 06:44:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:44:11,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 06:44:11,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 06:44:11,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:44:11,977 INFO L87 Difference]: Start difference. First operand 367 states and 448 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:12,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:12,071 INFO L93 Difference]: Finished difference Result 808 states and 987 transitions. [2021-11-23 06:44:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 06:44:12,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-23 06:44:12,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:12,081 INFO L225 Difference]: With dead ends: 808 [2021-11-23 06:44:12,081 INFO L226 Difference]: Without dead ends: 445 [2021-11-23 06:44:12,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 06:44:12,082 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 184 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 06:44:12,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 670 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 06:44:12,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-23 06:44:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 388. [2021-11-23 06:44:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 378 states have (on average 1.2671957671957672) internal successors, (479), 387 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 479 transitions. [2021-11-23 06:44:12,092 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 479 transitions. Word has length 54 [2021-11-23 06:44:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:12,093 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 479 transitions. [2021-11-23 06:44:12,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:12,093 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 479 transitions. [2021-11-23 06:44:12,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 06:44:12,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:12,095 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:12,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 06:44:12,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:12,308 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:12,308 INFO L85 PathProgramCache]: Analyzing trace with hash -716836992, now seen corresponding path program 1 times [2021-11-23 06:44:12,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:12,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236777972] [2021-11-23 06:44:12,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:12,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:12,346 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:44:12,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292917277] [2021-11-23 06:44:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:12,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:12,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:12,347 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) [2021-11-23 06:44:12,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 06:44:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:12,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 06:44:12,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:44:12,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:44:12,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:44:12,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:12,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236777972] [2021-11-23 06:44:12,788 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:44:12,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292917277] [2021-11-23 06:44:12,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292917277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:44:12,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:44:12,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 06:44:12,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661456742] [2021-11-23 06:44:12,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:44:12,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:44:12,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:12,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:44:12,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:44:12,792 INFO L87 Difference]: Start difference. First operand 388 states and 479 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:12,846 INFO L93 Difference]: Finished difference Result 729 states and 906 transitions. [2021-11-23 06:44:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:44:12,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-23 06:44:12,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:12,848 INFO L225 Difference]: With dead ends: 729 [2021-11-23 06:44:12,848 INFO L226 Difference]: Without dead ends: 394 [2021-11-23 06:44:12,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:44:12,849 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 17 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:44:12,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 926 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:44:12,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-23 06:44:12,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 388. [2021-11-23 06:44:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 378 states have (on average 1.2645502645502646) internal successors, (478), 387 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 478 transitions. [2021-11-23 06:44:12,856 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 478 transitions. Word has length 78 [2021-11-23 06:44:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:12,856 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 478 transitions. [2021-11-23 06:44:12,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 478 transitions. [2021-11-23 06:44:12,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 06:44:12,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:12,857 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:12,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 06:44:13,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:13,073 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:13,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1875245303, now seen corresponding path program 1 times [2021-11-23 06:44:13,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:13,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215922365] [2021-11-23 06:44:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:13,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:13,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:44:13,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573974169] [2021-11-23 06:44:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:13,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:13,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:13,117 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) [2021-11-23 06:44:13,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 06:44:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:13,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 06:44:13,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:44:13,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2021-11-23 06:44:13,546 INFO L388 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 [2021-11-23 06:44:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 06:44:13,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:44:13,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:13,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215922365] [2021-11-23 06:44:13,565 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:44:13,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573974169] [2021-11-23 06:44:13,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573974169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:44:13,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:44:13,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 06:44:13,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964822988] [2021-11-23 06:44:13,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:44:13,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 06:44:13,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:13,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 06:44:13,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 06:44:13,567 INFO L87 Difference]: Start difference. First operand 388 states and 478 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:13,757 INFO L93 Difference]: Finished difference Result 550 states and 683 transitions. [2021-11-23 06:44:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 06:44:13,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 80 [2021-11-23 06:44:13,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:13,760 INFO L225 Difference]: With dead ends: 550 [2021-11-23 06:44:13,760 INFO L226 Difference]: Without dead ends: 495 [2021-11-23 06:44:13,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:44:13,761 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 115 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 06:44:13,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 850 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 06:44:13,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-23 06:44:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 390. [2021-11-23 06:44:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 380 states have (on average 1.263157894736842) internal successors, (480), 389 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 480 transitions. [2021-11-23 06:44:13,769 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 480 transitions. Word has length 80 [2021-11-23 06:44:13,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:13,769 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 480 transitions. [2021-11-23 06:44:13,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 480 transitions. [2021-11-23 06:44:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 06:44:13,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:13,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:13,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 06:44:13,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:13,983 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:13,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:13,984 INFO L85 PathProgramCache]: Analyzing trace with hash 423400126, now seen corresponding path program 1 times [2021-11-23 06:44:13,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:13,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361747750] [2021-11-23 06:44:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:13,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:14,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:44:14,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497073958] [2021-11-23 06:44:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:14,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:14,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:14,012 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 06:44:14,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 06:44:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:14,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 06:44:14,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:44:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:44:14,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 06:44:14,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:14,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361747750] [2021-11-23 06:44:14,573 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:44:14,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497073958] [2021-11-23 06:44:14,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497073958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 06:44:14,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 06:44:14,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 06:44:14,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811311211] [2021-11-23 06:44:14,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 06:44:14,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 06:44:14,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:14,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 06:44:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 06:44:14,575 INFO L87 Difference]: Start difference. First operand 390 states and 480 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:14,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:14,631 INFO L93 Difference]: Finished difference Result 728 states and 904 transitions. [2021-11-23 06:44:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 06:44:14,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-23 06:44:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:14,633 INFO L225 Difference]: With dead ends: 728 [2021-11-23 06:44:14,634 INFO L226 Difference]: Without dead ends: 391 [2021-11-23 06:44:14,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 06:44:14,635 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 266 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 06:44:14,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 1170 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 06:44:14,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-23 06:44:14,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2021-11-23 06:44:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 381 states have (on average 1.26246719160105) internal successors, (481), 390 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 481 transitions. [2021-11-23 06:44:14,645 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 481 transitions. Word has length 82 [2021-11-23 06:44:14,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:14,645 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 481 transitions. [2021-11-23 06:44:14,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 481 transitions. [2021-11-23 06:44:14,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 06:44:14,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:14,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:14,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 06:44:14,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 06:44:14,851 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2146540935, now seen corresponding path program 1 times [2021-11-23 06:44:14,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:14,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840931607] [2021-11-23 06:44:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:14,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:14,886 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:44:14,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066657461] [2021-11-23 06:44:14,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:14,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:14,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:14,888 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 06:44:14,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 06:44:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:15,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 06:44:15,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:44:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:44:15,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 06:44:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 06:44:15,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:15,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840931607] [2021-11-23 06:44:15,535 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:44:15,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066657461] [2021-11-23 06:44:15,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066657461] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 06:44:15,536 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 06:44:15,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2021-11-23 06:44:15,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55828364] [2021-11-23 06:44:15,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 06:44:15,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 06:44:15,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:15,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 06:44:15,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 06:44:15,537 INFO L87 Difference]: Start difference. First operand 391 states and 481 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:15,663 INFO L93 Difference]: Finished difference Result 734 states and 914 transitions. [2021-11-23 06:44:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 06:44:15,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 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 83 [2021-11-23 06:44:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:15,665 INFO L225 Difference]: With dead ends: 734 [2021-11-23 06:44:15,665 INFO L226 Difference]: Without dead ends: 396 [2021-11-23 06:44:15,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-23 06:44:15,666 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 266 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 06:44:15,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 1523 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 06:44:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-23 06:44:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2021-11-23 06:44:15,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 386 states have (on average 1.2590673575129534) internal successors, (486), 395 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 486 transitions. [2021-11-23 06:44:15,700 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 486 transitions. Word has length 83 [2021-11-23 06:44:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:15,700 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 486 transitions. [2021-11-23 06:44:15,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 486 transitions. [2021-11-23 06:44:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 06:44:15,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:15,701 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:15,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 06:44:15,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:15,915 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:15,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:15,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1197416930, now seen corresponding path program 1 times [2021-11-23 06:44:15,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:15,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858330938] [2021-11-23 06:44:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:15,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:15,952 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:44:15,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795365095] [2021-11-23 06:44:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:15,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:15,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:15,955 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 06:44:15,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 06:44:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 06:44:16,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 06:44:16,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 06:44:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 06:44:16,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 06:44:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 06:44:16,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 06:44:16,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858330938] [2021-11-23 06:44:16,698 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 06:44:16,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795365095] [2021-11-23 06:44:16,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795365095] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 06:44:16,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 06:44:16,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2021-11-23 06:44:16,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894177733] [2021-11-23 06:44:16,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 06:44:16,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 06:44:16,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 06:44:16,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 06:44:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-23 06:44:16,699 INFO L87 Difference]: Start difference. First operand 396 states and 486 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 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) [2021-11-23 06:44:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 06:44:17,783 INFO L93 Difference]: Finished difference Result 785 states and 974 transitions. [2021-11-23 06:44:17,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 06:44:17,784 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-23 06:44:17,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 06:44:17,785 INFO L225 Difference]: With dead ends: 785 [2021-11-23 06:44:17,785 INFO L226 Difference]: Without dead ends: 399 [2021-11-23 06:44:17,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=317, Invalid=739, Unknown=0, NotChecked=0, Total=1056 [2021-11-23 06:44:17,786 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 575 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 06:44:17,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 2679 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 06:44:17,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-23 06:44:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2021-11-23 06:44:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 389 states have (on average 1.2519280205655527) internal successors, (487), 398 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 06:44:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 487 transitions. [2021-11-23 06:44:17,795 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 487 transitions. Word has length 88 [2021-11-23 06:44:17,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 06:44:17,795 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 487 transitions. [2021-11-23 06:44:17,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 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) [2021-11-23 06:44:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 487 transitions. [2021-11-23 06:44:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 06:44:17,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 06:44:17,796 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 06:44:17,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 06:44:18,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 06:44:18,011 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-23 06:44:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 06:44:18,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1257931161, now seen corresponding path program 2 times [2021-11-23 06:44:18,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 06:44:18,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050496898] [2021-11-23 06:44:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 06:44:18,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 06:44:18,048 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 06:44:18,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397136690] [2021-11-23 06:44:18,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 06:44:18,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 06:44:18,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 06:44:18,049 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 06:44:18,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process Killed by 15