./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_BER_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 d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 05:05:02,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 05:05:02,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 05:05:03,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 05:05:03,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 05:05:03,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 05:05:03,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 05:05:03,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 05:05:03,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 05:05:03,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 05:05:03,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 05:05:03,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 05:05:03,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 05:05:03,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 05:05:03,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 05:05:03,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 05:05:03,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 05:05:03,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 05:05:03,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 05:05:03,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 05:05:03,034 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 05:05:03,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 05:05:03,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 05:05:03,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 05:05:03,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 05:05:03,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 05:05:03,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 05:05:03,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 05:05:03,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 05:05:03,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 05:05:03,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 05:05:03,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 05:05:03,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 05:05:03,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 05:05:03,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 05:05:03,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 05:05:03,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 05:05:03,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 05:05:03,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 05:05:03,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 05:05:03,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 05:05:03,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 05:05:03,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-14 05:05:03,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 05:05:03,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 05:05:03,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 05:05:03,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 05:05:03,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 05:05:03,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 05:05:03,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 05:05:03,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 05:05:03,082 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 05:05:03,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 05:05:03,083 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 05:05:03,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 05:05:03,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 05:05:03,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 05:05:03,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 05:05:03,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 05:05:03,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 05:05:03,084 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 05:05:03,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 05:05:03,085 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 05:05:03,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 05:05:03,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 05:05:03,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 05:05:03,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 05:05:03,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 05:05:03,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 05:05:03,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 05:05:03,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 05:05:03,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 05:05:03,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 05:05:03,087 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 05:05:03,087 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 05:05:03,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 05:05:03,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2022-07-14 05:05:03,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 05:05:03,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 05:05:03,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 05:05:03,374 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 05:05:03,374 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 05:05:03,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2022-07-14 05:05:03,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9065ecfab/93d7465aa6464510a18c47b0645639ef/FLAG137a7be70 [2022-07-14 05:05:03,944 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 05:05:03,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2022-07-14 05:05:03,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9065ecfab/93d7465aa6464510a18c47b0645639ef/FLAG137a7be70 [2022-07-14 05:05:04,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9065ecfab/93d7465aa6464510a18c47b0645639ef [2022-07-14 05:05:04,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 05:05:04,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 05:05:04,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 05:05:04,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 05:05:04,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 05:05:04,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 05:05:04" (1/1) ... [2022-07-14 05:05:04,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287c2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:04, skipping insertion in model container [2022-07-14 05:05:04,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 05:05:04" (1/1) ... [2022-07-14 05:05:04,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 05:05:04,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 05:05:05,012 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_BER_test6-2.i[44118,44131] [2022-07-14 05:05:05,033 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_BER_test6-2.i[44660,44673] [2022-07-14 05:05:05,122 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_BER_test6-2.i[56247,56260] [2022-07-14 05:05:05,126 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_BER_test6-2.i[56368,56381] [2022-07-14 05:05:05,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 05:05:05,155 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 05:05:05,179 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_BER_test6-2.i[44118,44131] [2022-07-14 05:05:05,181 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_BER_test6-2.i[44660,44673] [2022-07-14 05:05:05,239 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_BER_test6-2.i[56247,56260] [2022-07-14 05:05:05,240 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_BER_test6-2.i[56368,56381] [2022-07-14 05:05:05,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 05:05:05,318 INFO L208 MainTranslator]: Completed translation [2022-07-14 05:05:05,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05 WrapperNode [2022-07-14 05:05:05,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 05:05:05,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 05:05:05,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 05:05:05,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 05:05:05,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05" (1/1) ... [2022-07-14 05:05:05,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05" (1/1) ... [2022-07-14 05:05:05,468 INFO L137 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1199 [2022-07-14 05:05:05,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 05:05:05,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 05:05:05,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 05:05:05,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 05:05:05,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05" (1/1) ... [2022-07-14 05:05:05,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05" (1/1) ... [2022-07-14 05:05:05,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05" (1/1) ... [2022-07-14 05:05:05,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05" (1/1) ... [2022-07-14 05:05:05,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05" (1/1) ... [2022-07-14 05:05:05,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05" (1/1) ... [2022-07-14 05:05:05,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05" (1/1) ... [2022-07-14 05:05:05,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 05:05:05,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 05:05:05,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 05:05:05,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 05:05:05,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05" (1/1) ... [2022-07-14 05:05:05,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 05:05:05,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:05,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 05:05:05,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 05:05:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 05:05:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-14 05:05:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 05:05:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 05:05:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-07-14 05:05:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-07-14 05:05:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 05:05:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-14 05:05:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-14 05:05:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 05:05:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 05:05:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 05:05:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-07-14 05:05:05,713 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-07-14 05:05:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 05:05:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-07-14 05:05:05,713 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-07-14 05:05:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 05:05:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 05:05:05,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 05:05:05,980 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 05:05:05,981 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 05:05:07,082 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 05:05:07,097 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 05:05:07,097 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2022-07-14 05:05:07,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 05:05:07 BoogieIcfgContainer [2022-07-14 05:05:07,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 05:05:07,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 05:05:07,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 05:05:07,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 05:05:07,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 05:05:04" (1/3) ... [2022-07-14 05:05:07,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcc4d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 05:05:07, skipping insertion in model container [2022-07-14 05:05:07,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 05:05:05" (2/3) ... [2022-07-14 05:05:07,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcc4d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 05:05:07, skipping insertion in model container [2022-07-14 05:05:07,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 05:05:07" (3/3) ... [2022-07-14 05:05:07,109 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-2.i [2022-07-14 05:05:07,121 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 05:05:07,122 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-14 05:05:07,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 05:05:07,172 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3e1bc21f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5906164d [2022-07-14 05:05:07,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-14 05:05:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 234 states have (on average 1.6367521367521367) internal successors, (383), 238 states have internal predecessors, (383), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 05:05:07,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-14 05:05:07,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:07,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:05:07,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:07,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:07,192 INFO L85 PathProgramCache]: Analyzing trace with hash -720802776, now seen corresponding path program 1 times [2022-07-14 05:05:07,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:07,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952139450] [2022-07-14 05:05:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:07,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:05:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:07,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952139450] [2022-07-14 05:05:07,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952139450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:05:07,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:05:07,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 05:05:07,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525954636] [2022-07-14 05:05:07,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:05:07,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 05:05:07,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 05:05:07,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 05:05:07,404 INFO L87 Difference]: Start difference. First operand has 258 states, 234 states have (on average 1.6367521367521367) internal successors, (383), 238 states have internal predecessors, (383), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:07,486 INFO L93 Difference]: Finished difference Result 511 states and 836 transitions. [2022-07-14 05:05:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 05:05:07,489 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-14 05:05:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:07,509 INFO L225 Difference]: With dead ends: 511 [2022-07-14 05:05:07,510 INFO L226 Difference]: Without dead ends: 251 [2022-07-14 05:05:07,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 05:05:07,524 INFO L413 NwaCegarLoop]: 331 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, 331 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:07,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:05:07,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-14 05:05:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-07-14 05:05:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 228 states have (on average 1.3026315789473684) internal successors, (297), 232 states have internal predecessors, (297), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-14 05:05:07,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 327 transitions. [2022-07-14 05:05:07,594 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 327 transitions. Word has length 8 [2022-07-14 05:05:07,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:07,595 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 327 transitions. [2022-07-14 05:05:07,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 327 transitions. [2022-07-14 05:05:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 05:05:07,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:07,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 05:05:07,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 05:05:07,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:07,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:07,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1810590275, now seen corresponding path program 1 times [2022-07-14 05:05:07,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:07,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722549472] [2022-07-14 05:05:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:07,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:05:07,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:07,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722549472] [2022-07-14 05:05:07,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722549472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:05:07,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:05:07,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 05:05:07,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621583316] [2022-07-14 05:05:07,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:05:07,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 05:05:07,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:07,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 05:05:07,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 05:05:07,694 INFO L87 Difference]: Start difference. First operand 251 states and 327 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:08,080 INFO L93 Difference]: Finished difference Result 547 states and 718 transitions. [2022-07-14 05:05:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 05:05:08,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-14 05:05:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:08,083 INFO L225 Difference]: With dead ends: 547 [2022-07-14 05:05:08,083 INFO L226 Difference]: Without dead ends: 405 [2022-07-14 05:05:08,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:05:08,085 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 179 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:08,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 869 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 05:05:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-14 05:05:08,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 253. [2022-07-14 05:05:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 230 states have (on average 1.3) internal successors, (299), 234 states have internal predecessors, (299), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-14 05:05:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 329 transitions. [2022-07-14 05:05:08,100 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 329 transitions. Word has length 10 [2022-07-14 05:05:08,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:08,101 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 329 transitions. [2022-07-14 05:05:08,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 329 transitions. [2022-07-14 05:05:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 05:05:08,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:08,102 INFO L195 NwaCegarLoop]: 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] [2022-07-14 05:05:08,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 05:05:08,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1739977374, now seen corresponding path program 1 times [2022-07-14 05:05:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:08,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620910821] [2022-07-14 05:05:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:08,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:08,144 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:08,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582264702] [2022-07-14 05:05:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:08,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:08,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:05:08,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 05:05:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:08,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 05:05:08,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:05:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:05:08,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:05:08,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:08,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620910821] [2022-07-14 05:05:08,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:05:08,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582264702] [2022-07-14 05:05:08,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582264702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:05:08,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:05:08,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 05:05:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562727271] [2022-07-14 05:05:08,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:05:08,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 05:05:08,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:08,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 05:05:08,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:05:08,425 INFO L87 Difference]: Start difference. First operand 253 states and 329 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:08,487 INFO L93 Difference]: Finished difference Result 523 states and 685 transitions. [2022-07-14 05:05:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 05:05:08,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-14 05:05:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:08,490 INFO L225 Difference]: With dead ends: 523 [2022-07-14 05:05:08,490 INFO L226 Difference]: Without dead ends: 274 [2022-07-14 05:05:08,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:05:08,492 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 9 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:08,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 599 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:05:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-07-14 05:05:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2022-07-14 05:05:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 250 states have (on average 1.276) internal successors, (319), 254 states have internal predecessors, (319), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-14 05:05:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 349 transitions. [2022-07-14 05:05:08,501 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 349 transitions. Word has length 47 [2022-07-14 05:05:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:08,501 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 349 transitions. [2022-07-14 05:05:08,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 349 transitions. [2022-07-14 05:05:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 05:05:08,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:08,503 INFO L195 NwaCegarLoop]: 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] [2022-07-14 05:05:08,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 05:05:08,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:08,732 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:08,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:08,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1599428764, now seen corresponding path program 1 times [2022-07-14 05:05:08,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:08,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559855916] [2022-07-14 05:05:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:08,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:08,761 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:08,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957248821] [2022-07-14 05:05:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:08,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:08,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:08,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:05:08,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 05:05:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:08,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 05:05:08,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:05:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:05:08,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:05:08,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:08,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559855916] [2022-07-14 05:05:08,997 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:05:08,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957248821] [2022-07-14 05:05:08,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957248821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:05:08,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:05:08,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 05:05:08,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335713301] [2022-07-14 05:05:08,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:05:08,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 05:05:08,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:08,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 05:05:09,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 05:05:09,000 INFO L87 Difference]: Start difference. First operand 273 states and 349 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:09,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:09,075 INFO L93 Difference]: Finished difference Result 535 states and 687 transitions. [2022-07-14 05:05:09,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 05:05:09,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-14 05:05:09,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:09,077 INFO L225 Difference]: With dead ends: 535 [2022-07-14 05:05:09,077 INFO L226 Difference]: Without dead ends: 266 [2022-07-14 05:05:09,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:05:09,079 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 264 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:09,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 650 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:05:09,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-14 05:05:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 259. [2022-07-14 05:05:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 236 states have (on average 1.2627118644067796) internal successors, (298), 240 states have internal predecessors, (298), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-14 05:05:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 328 transitions. [2022-07-14 05:05:09,088 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 328 transitions. Word has length 47 [2022-07-14 05:05:09,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:09,089 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 328 transitions. [2022-07-14 05:05:09,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 328 transitions. [2022-07-14 05:05:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 05:05:09,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:09,090 INFO L195 NwaCegarLoop]: 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] [2022-07-14 05:05:09,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 05:05:09,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-14 05:05:09,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:09,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:09,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1265789014, now seen corresponding path program 1 times [2022-07-14 05:05:09,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:09,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169123731] [2022-07-14 05:05:09,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:09,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:09,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:09,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193258586] [2022-07-14 05:05:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:09,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:09,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:09,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:05:09,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 05:05:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:09,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 05:05:09,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:05:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:05:09,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:05:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:09,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169123731] [2022-07-14 05:05:09,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:05:09,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193258586] [2022-07-14 05:05:09,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193258586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:05:09,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:05:09,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 05:05:09,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431623786] [2022-07-14 05:05:09,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:05:09,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 05:05:09,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 05:05:09,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 05:05:09,856 INFO L87 Difference]: Start difference. First operand 259 states and 328 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:09,917 INFO L93 Difference]: Finished difference Result 271 states and 340 transitions. [2022-07-14 05:05:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 05:05:09,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-14 05:05:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:09,919 INFO L225 Difference]: With dead ends: 271 [2022-07-14 05:05:09,919 INFO L226 Difference]: Without dead ends: 269 [2022-07-14 05:05:09,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 05:05:09,921 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 13 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:09,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1566 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:05:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-07-14 05:05:09,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-07-14 05:05:09,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 243 states have (on average 1.2592592592592593) internal successors, (306), 248 states have internal predecessors, (306), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 05:05:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 338 transitions. [2022-07-14 05:05:09,929 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 338 transitions. Word has length 47 [2022-07-14 05:05:09,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:09,930 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 338 transitions. [2022-07-14 05:05:09,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 338 transitions. [2022-07-14 05:05:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 05:05:09,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:09,932 INFO L195 NwaCegarLoop]: 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] [2022-07-14 05:05:09,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 05:05:10,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:10,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:10,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:10,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2015855482, now seen corresponding path program 1 times [2022-07-14 05:05:10,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:10,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579349453] [2022-07-14 05:05:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:10,284 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:10,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443948956] [2022-07-14 05:05:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:10,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:10,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:10,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:05:10,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 05:05:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:10,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 05:05:10,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:05:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:05:10,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:05:10,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:10,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579349453] [2022-07-14 05:05:10,857 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:05:10,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443948956] [2022-07-14 05:05:10,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443948956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:05:10,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:05:10,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 05:05:10,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815723521] [2022-07-14 05:05:10,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:05:10,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 05:05:10,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:10,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 05:05:10,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:05:10,860 INFO L87 Difference]: Start difference. First operand 269 states and 338 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:10,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:10,877 INFO L93 Difference]: Finished difference Result 535 states and 674 transitions. [2022-07-14 05:05:10,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 05:05:10,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-14 05:05:10,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:10,880 INFO L225 Difference]: With dead ends: 535 [2022-07-14 05:05:10,880 INFO L226 Difference]: Without dead ends: 270 [2022-07-14 05:05:10,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:05:10,881 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 0 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:10,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 05:05:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-14 05:05:10,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2022-07-14 05:05:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 244 states have (on average 1.2581967213114753) internal successors, (307), 249 states have internal predecessors, (307), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-14 05:05:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 339 transitions. [2022-07-14 05:05:10,889 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 339 transitions. Word has length 58 [2022-07-14 05:05:10,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:10,890 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 339 transitions. [2022-07-14 05:05:10,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:10,890 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 339 transitions. [2022-07-14 05:05:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 05:05:10,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:10,892 INFO L195 NwaCegarLoop]: 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] [2022-07-14 05:05:10,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 05:05:11,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:11,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:11,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1886084804, now seen corresponding path program 1 times [2022-07-14 05:05:11,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:11,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500063899] [2022-07-14 05:05:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:11,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:11,250 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:11,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31373482] [2022-07-14 05:05:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:11,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:11,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:11,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:05:11,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 05:05:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:11,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 05:05:11,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:05:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:05:12,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:05:12,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:12,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500063899] [2022-07-14 05:05:12,064 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:05:12,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31373482] [2022-07-14 05:05:12,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31373482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:05:12,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:05:12,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 05:05:12,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112032718] [2022-07-14 05:05:12,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:05:12,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 05:05:12,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 05:05:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:05:12,066 INFO L87 Difference]: Start difference. First operand 270 states and 339 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:12,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:12,181 INFO L93 Difference]: Finished difference Result 690 states and 873 transitions. [2022-07-14 05:05:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 05:05:12,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-14 05:05:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:12,184 INFO L225 Difference]: With dead ends: 690 [2022-07-14 05:05:12,184 INFO L226 Difference]: Without dead ends: 424 [2022-07-14 05:05:12,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 05:05:12,185 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 143 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:12,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 636 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:05:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-07-14 05:05:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 385. [2022-07-14 05:05:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 356 states have (on average 1.2556179775280898) internal successors, (447), 361 states have internal predecessors, (447), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-14 05:05:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 485 transitions. [2022-07-14 05:05:12,198 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 485 transitions. Word has length 58 [2022-07-14 05:05:12,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:12,198 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 485 transitions. [2022-07-14 05:05:12,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 05:05:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 485 transitions. [2022-07-14 05:05:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-14 05:05:12,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:12,200 INFO L195 NwaCegarLoop]: 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] [2022-07-14 05:05:12,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-14 05:05:12,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:12,408 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1360052348, now seen corresponding path program 1 times [2022-07-14 05:05:12,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:12,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935983491] [2022-07-14 05:05:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:12,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:12,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:12,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195585017] [2022-07-14 05:05:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:12,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:12,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:12,452 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:05:12,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 05:05:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:12,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 05:05:12,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:05:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:05:12,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 05:05:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 05:05:13,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:13,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935983491] [2022-07-14 05:05:13,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:05:13,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195585017] [2022-07-14 05:05:13,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195585017] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-14 05:05:13,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 05:05:13,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2022-07-14 05:05:13,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822332808] [2022-07-14 05:05:13,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:05:13,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 05:05:13,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 05:05:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-14 05:05:13,044 INFO L87 Difference]: Start difference. First operand 385 states and 485 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 05:05:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:13,193 INFO L93 Difference]: Finished difference Result 1424 states and 1846 transitions. [2022-07-14 05:05:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 05:05:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-07-14 05:05:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:13,199 INFO L225 Difference]: With dead ends: 1424 [2022-07-14 05:05:13,200 INFO L226 Difference]: Without dead ends: 1088 [2022-07-14 05:05:13,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-14 05:05:13,201 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1280 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:13,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 1253 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:05:13,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-07-14 05:05:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 659. [2022-07-14 05:05:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 617 states have (on average 1.2690437601296596) internal successors, (783), 623 states have internal predecessors, (783), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-14 05:05:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 840 transitions. [2022-07-14 05:05:13,226 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 840 transitions. Word has length 62 [2022-07-14 05:05:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:13,227 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 840 transitions. [2022-07-14 05:05:13,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 05:05:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 840 transitions. [2022-07-14 05:05:13,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-14 05:05:13,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:13,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-14 05:05:13,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 05:05:13,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:13,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:13,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:13,444 INFO L85 PathProgramCache]: Analyzing trace with hash 643772401, now seen corresponding path program 1 times [2022-07-14 05:05:13,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:13,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094047902] [2022-07-14 05:05:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:13,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:13,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:13,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892819412] [2022-07-14 05:05:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:13,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:13,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:13,495 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:05:13,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 05:05:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:14,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 05:05:14,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:05:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-14 05:05:14,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:05:14,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:14,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094047902] [2022-07-14 05:05:14,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:05:14,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892819412] [2022-07-14 05:05:14,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892819412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:05:14,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:05:14,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 05:05:14,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498903471] [2022-07-14 05:05:14,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:05:14,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 05:05:14,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:14,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 05:05:14,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 05:05:14,103 INFO L87 Difference]: Start difference. First operand 659 states and 840 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 05:05:14,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:14,214 INFO L93 Difference]: Finished difference Result 1250 states and 1604 transitions. [2022-07-14 05:05:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 05:05:14,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2022-07-14 05:05:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:14,218 INFO L225 Difference]: With dead ends: 1250 [2022-07-14 05:05:14,219 INFO L226 Difference]: Without dead ends: 659 [2022-07-14 05:05:14,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-14 05:05:14,221 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 25 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:14,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1168 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:05:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-07-14 05:05:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2022-07-14 05:05:14,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 617 states have (on average 1.2690437601296596) internal successors, (783), 623 states have internal predecessors, (783), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-14 05:05:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 839 transitions. [2022-07-14 05:05:14,242 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 839 transitions. Word has length 93 [2022-07-14 05:05:14,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:14,242 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 839 transitions. [2022-07-14 05:05:14,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 05:05:14,243 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 839 transitions. [2022-07-14 05:05:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-14 05:05:14,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:14,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2022-07-14 05:05:14,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-14 05:05:14,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:14,472 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:14,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:14,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1976180910, now seen corresponding path program 1 times [2022-07-14 05:05:14,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:14,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417516627] [2022-07-14 05:05:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:14,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:14,513 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:14,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165282820] [2022-07-14 05:05:14,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:14,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:14,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:14,516 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) [2022-07-14 05:05:14,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-14 05:05:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:14,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 05:05:14,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:05:15,014 INFO L390 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 11 treesize of output 7 [2022-07-14 05:05:15,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 05:05:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 05:05:15,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:05:15,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:15,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417516627] [2022-07-14 05:05:15,031 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:05:15,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165282820] [2022-07-14 05:05:15,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165282820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:05:15,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:05:15,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 05:05:15,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22242480] [2022-07-14 05:05:15,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:05:15,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 05:05:15,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:15,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 05:05:15,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 05:05:15,034 INFO L87 Difference]: Start difference. First operand 659 states and 839 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 05:05:15,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:15,310 INFO L93 Difference]: Finished difference Result 949 states and 1227 transitions. [2022-07-14 05:05:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 05:05:15,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 98 [2022-07-14 05:05:15,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:15,315 INFO L225 Difference]: With dead ends: 949 [2022-07-14 05:05:15,315 INFO L226 Difference]: Without dead ends: 852 [2022-07-14 05:05:15,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 05:05:15,316 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 107 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:15,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 848 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 05:05:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-07-14 05:05:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 663. [2022-07-14 05:05:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 621 states have (on average 1.2673107890499196) internal successors, (787), 627 states have internal predecessors, (787), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-14 05:05:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 843 transitions. [2022-07-14 05:05:15,342 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 843 transitions. Word has length 98 [2022-07-14 05:05:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:15,342 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 843 transitions. [2022-07-14 05:05:15,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-14 05:05:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 843 transitions. [2022-07-14 05:05:15,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-14 05:05:15,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:15,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-07-14 05:05:15,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-14 05:05:15,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-14 05:05:15,560 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:15,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:15,560 INFO L85 PathProgramCache]: Analyzing trace with hash -553663886, now seen corresponding path program 1 times [2022-07-14 05:05:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:15,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317068806] [2022-07-14 05:05:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:15,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:15,607 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:15,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850894761] [2022-07-14 05:05:15,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:15,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:15,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:15,610 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) [2022-07-14 05:05:15,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-14 05:05:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:16,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-14 05:05:16,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:05:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-14 05:05:16,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 05:05:16,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:16,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317068806] [2022-07-14 05:05:16,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:05:16,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850894761] [2022-07-14 05:05:16,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850894761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 05:05:16,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 05:05:16,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 05:05:16,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666890597] [2022-07-14 05:05:16,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 05:05:16,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 05:05:16,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:16,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 05:05:16,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-14 05:05:16,352 INFO L87 Difference]: Start difference. First operand 663 states and 843 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 05:05:16,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:16,485 INFO L93 Difference]: Finished difference Result 1266 states and 1623 transitions. [2022-07-14 05:05:16,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 05:05:16,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 110 [2022-07-14 05:05:16,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:16,489 INFO L225 Difference]: With dead ends: 1266 [2022-07-14 05:05:16,489 INFO L226 Difference]: Without dead ends: 668 [2022-07-14 05:05:16,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-14 05:05:16,491 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 18 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:16,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2103 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 05:05:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-07-14 05:05:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2022-07-14 05:05:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 625 states have (on average 1.2672) internal successors, (792), 632 states have internal predecessors, (792), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-14 05:05:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 849 transitions. [2022-07-14 05:05:16,515 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 849 transitions. Word has length 110 [2022-07-14 05:05:16,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:16,515 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 849 transitions. [2022-07-14 05:05:16,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 05:05:16,516 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 849 transitions. [2022-07-14 05:05:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-14 05:05:16,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:16,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1] [2022-07-14 05:05:16,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-14 05:05:16,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:16,732 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:16,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:16,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1849320704, now seen corresponding path program 1 times [2022-07-14 05:05:16,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:16,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843473368] [2022-07-14 05:05:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:16,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:16,775 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:16,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041319701] [2022-07-14 05:05:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:16,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:16,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:16,777 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) [2022-07-14 05:05:16,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-14 05:05:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 05:05:18,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-14 05:05:18,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:05:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 05:05:18,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 05:05:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 05:05:18,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:18,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843473368] [2022-07-14 05:05:18,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:05:18,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041319701] [2022-07-14 05:05:18,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041319701] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 05:05:18,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 05:05:18,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2022-07-14 05:05:18,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573551672] [2022-07-14 05:05:18,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 05:05:18,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 05:05:18,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:18,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 05:05:18,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-14 05:05:18,250 INFO L87 Difference]: Start difference. First operand 668 states and 849 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-14 05:05:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:18,525 INFO L93 Difference]: Finished difference Result 1289 states and 1655 transitions. [2022-07-14 05:05:18,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 05:05:18,526 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2022-07-14 05:05:18,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:18,529 INFO L225 Difference]: With dead ends: 1289 [2022-07-14 05:05:18,529 INFO L226 Difference]: Without dead ends: 684 [2022-07-14 05:05:18,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-07-14 05:05:18,531 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 32 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:18,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3005 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 05:05:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-07-14 05:05:18,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 681. [2022-07-14 05:05:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 637 states have (on average 1.271585557299843) internal successors, (810), 644 states have internal predecessors, (810), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-14 05:05:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 867 transitions. [2022-07-14 05:05:18,565 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 867 transitions. Word has length 112 [2022-07-14 05:05:18,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:18,565 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 867 transitions. [2022-07-14 05:05:18,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-14 05:05:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 867 transitions. [2022-07-14 05:05:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-14 05:05:18,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:18,567 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-07-14 05:05:18,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-14 05:05:18,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-14 05:05:18,782 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:18,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1577750638, now seen corresponding path program 2 times [2022-07-14 05:05:18,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:18,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766721565] [2022-07-14 05:05:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:18,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:18,831 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:18,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839426156] [2022-07-14 05:05:18,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 05:05:18,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:18,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:18,833 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) [2022-07-14 05:05:18,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-14 05:05:49,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 05:05:49,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 05:05:49,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-14 05:05:49,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 05:05:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-14 05:05:49,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 05:05:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-14 05:05:49,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 05:05:49,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766721565] [2022-07-14 05:05:49,775 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 05:05:49,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839426156] [2022-07-14 05:05:49,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839426156] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 05:05:49,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 05:05:49,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2022-07-14 05:05:49,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815870048] [2022-07-14 05:05:49,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 05:05:49,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-14 05:05:49,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 05:05:49,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-14 05:05:49,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-14 05:05:49,777 INFO L87 Difference]: Start difference. First operand 681 states and 867 transitions. Second operand has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-14 05:05:50,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 05:05:50,864 INFO L93 Difference]: Finished difference Result 1382 states and 1772 transitions. [2022-07-14 05:05:50,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-14 05:05:50,865 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-07-14 05:05:50,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 05:05:50,869 INFO L225 Difference]: With dead ends: 1382 [2022-07-14 05:05:50,869 INFO L226 Difference]: Without dead ends: 699 [2022-07-14 05:05:50,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2022-07-14 05:05:50,873 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 336 mSDsluCounter, 3026 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 05:05:50,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 3330 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 05:05:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-14 05:05:50,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 687. [2022-07-14 05:05:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 643 states have (on average 1.2690513219284603) internal successors, (816), 650 states have internal predecessors, (816), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-14 05:05:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 873 transitions. [2022-07-14 05:05:50,898 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 873 transitions. Word has length 116 [2022-07-14 05:05:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 05:05:50,899 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 873 transitions. [2022-07-14 05:05:50,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-14 05:05:50,899 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 873 transitions. [2022-07-14 05:05:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-14 05:05:50,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 05:05:50,900 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-07-14 05:05:50,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-14 05:05:51,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-14 05:05:51,116 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-14 05:05:51,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 05:05:51,116 INFO L85 PathProgramCache]: Analyzing trace with hash -101405335, now seen corresponding path program 3 times [2022-07-14 05:05:51,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 05:05:51,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842121712] [2022-07-14 05:05:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 05:05:51,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 05:05:51,162 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 05:05:51,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951977555] [2022-07-14 05:05:51,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 05:05:51,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 05:05:51,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 05:05:51,164 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 05:05:51,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process