./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.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 dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 07:02:40,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 07:02:40,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 07:02:40,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 07:02:40,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 07:02:40,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 07:02:40,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 07:02:40,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 07:02:40,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 07:02:41,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 07:02:41,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 07:02:41,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 07:02:41,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 07:02:41,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 07:02:41,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 07:02:41,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 07:02:41,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 07:02:41,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 07:02:41,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 07:02:41,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 07:02:41,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 07:02:41,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 07:02:41,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 07:02:41,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 07:02:41,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 07:02:41,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 07:02:41,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 07:02:41,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 07:02:41,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 07:02:41,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 07:02:41,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 07:02:41,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 07:02:41,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 07:02:41,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 07:02:41,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 07:02:41,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 07:02:41,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 07:02:41,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 07:02:41,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 07:02:41,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 07:02:41,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 07:02:41,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-03 07:02:41,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 07:02:41,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 07:02:41,065 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 07:02:41,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 07:02:41,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 07:02:41,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 07:02:41,066 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 07:02:41,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 07:02:41,067 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 07:02:41,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 07:02:41,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 07:02:41,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 07:02:41,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 07:02:41,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 07:02:41,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 07:02:41,068 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 07:02:41,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 07:02:41,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 07:02:41,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 07:02:41,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 07:02:41,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 07:02:41,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 07:02:41,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 07:02:41,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 07:02:41,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 07:02:41,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 07:02:41,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 07:02:41,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 07:02:41,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 07:02:41,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 07:02:41,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 07:02:41,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 07:02:41,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2021-11-03 07:02:41,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 07:02:41,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 07:02:41,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 07:02:41,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 07:02:41,253 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 07:02:41,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-11-03 07:02:41,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af9f0bf04/1162cf609ac04cb68d38223ac0cfaa11/FLAG1f4c1b4ee [2021-11-03 07:02:41,732 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 07:02:41,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-11-03 07:02:41,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af9f0bf04/1162cf609ac04cb68d38223ac0cfaa11/FLAG1f4c1b4ee [2021-11-03 07:02:41,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af9f0bf04/1162cf609ac04cb68d38223ac0cfaa11 [2021-11-03 07:02:41,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 07:02:41,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 07:02:41,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 07:02:41,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 07:02:41,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 07:02:41,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 07:02:41" (1/1) ... [2021-11-03 07:02:41,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f30e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:41, skipping insertion in model container [2021-11-03 07:02:41,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 07:02:41" (1/1) ... [2021-11-03 07:02:41,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 07:02:41,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 07:02:42,119 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[33021,33034] [2021-11-03 07:02:42,228 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[45234,45247] [2021-11-03 07:02:42,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 07:02:42,262 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 07:02:42,287 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[33021,33034] [2021-11-03 07:02:42,328 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[45234,45247] [2021-11-03 07:02:42,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 07:02:42,382 INFO L208 MainTranslator]: Completed translation [2021-11-03 07:02:42,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42 WrapperNode [2021-11-03 07:02:42,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 07:02:42,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 07:02:42,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 07:02:42,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 07:02:42,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42" (1/1) ... [2021-11-03 07:02:42,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42" (1/1) ... [2021-11-03 07:02:42,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 07:02:42,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 07:02:42,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 07:02:42,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 07:02:42,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42" (1/1) ... [2021-11-03 07:02:42,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42" (1/1) ... [2021-11-03 07:02:42,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42" (1/1) ... [2021-11-03 07:02:42,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42" (1/1) ... [2021-11-03 07:02:42,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42" (1/1) ... [2021-11-03 07:02:42,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42" (1/1) ... [2021-11-03 07:02:42,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42" (1/1) ... [2021-11-03 07:02:42,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 07:02:42,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 07:02:42,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 07:02:42,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 07:02:42,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42" (1/1) ... [2021-11-03 07:02:42,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 07:02:42,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 07:02:42,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 07:02:42,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 07:02:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 07:02:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 07:02:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 07:02:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 07:02:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 07:02:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 07:02:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 07:02:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 07:02:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 07:02:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 07:02:42,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 07:02:43,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 07:02:43,164 INFO L299 CfgBuilder]: Removed 145 assume(true) statements. [2021-11-03 07:02:43,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 07:02:43 BoogieIcfgContainer [2021-11-03 07:02:43,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 07:02:43,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 07:02:43,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 07:02:43,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 07:02:43,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 07:02:41" (1/3) ... [2021-11-03 07:02:43,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66afa0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 07:02:43, skipping insertion in model container [2021-11-03 07:02:43,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:02:42" (2/3) ... [2021-11-03 07:02:43,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66afa0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 07:02:43, skipping insertion in model container [2021-11-03 07:02:43,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 07:02:43" (3/3) ... [2021-11-03 07:02:43,172 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-2.i [2021-11-03 07:02:43,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 07:02:43,176 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-03 07:02:43,211 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 07:02:43,216 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 07:02:43,217 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-03 07:02:43,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 299 states have (on average 1.7826086956521738) internal successors, (533), 330 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:43,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 07:02:43,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 07:02:43,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 07:02:43,256 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 07:02:43,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 07:02:43,259 INFO L85 PathProgramCache]: Analyzing trace with hash -109840528, now seen corresponding path program 1 times [2021-11-03 07:02:43,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 07:02:43,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141904184] [2021-11-03 07:02:43,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:43,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 07:02:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 07:02:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 07:02:43,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 07:02:43,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141904184] [2021-11-03 07:02:43,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141904184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 07:02:43,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 07:02:43,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 07:02:43,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643796414] [2021-11-03 07:02:43,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 07:02:43,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 07:02:43,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 07:02:43,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 07:02:43,432 INFO L87 Difference]: Start difference. First operand has 331 states, 299 states have (on average 1.7826086956521738) internal successors, (533), 330 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 07:02:43,992 INFO L93 Difference]: Finished difference Result 660 states and 1064 transitions. [2021-11-03 07:02:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 07:02:43,995 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-03 07:02:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 07:02:44,007 INFO L225 Difference]: With dead ends: 660 [2021-11-03 07:02:44,008 INFO L226 Difference]: Without dead ends: 298 [2021-11-03 07:02:44,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 07:02:44,016 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 382.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.42ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 499.47ms IncrementalHoareTripleChecker+Time [2021-11-03 07:02:44,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 427 Unknown, 0 Unchecked, 2.42ms Time], IncrementalHoareTripleChecker [0 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 499.47ms Time] [2021-11-03 07:02:44,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-03 07:02:44,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-11-03 07:02:44,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 267 states have (on average 1.4344569288389513) internal successors, (383), 297 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 383 transitions. [2021-11-03 07:02:44,052 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 383 transitions. Word has length 9 [2021-11-03 07:02:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 07:02:44,052 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 383 transitions. [2021-11-03 07:02:44,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:44,053 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 383 transitions. [2021-11-03 07:02:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 07:02:44,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 07:02:44,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 07:02:44,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 07:02:44,054 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 07:02:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 07:02:44,055 INFO L85 PathProgramCache]: Analyzing trace with hash 518597571, now seen corresponding path program 1 times [2021-11-03 07:02:44,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 07:02:44,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642491204] [2021-11-03 07:02:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:44,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 07:02:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 07:02:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 07:02:44,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 07:02:44,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642491204] [2021-11-03 07:02:44,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642491204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 07:02:44,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 07:02:44,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 07:02:44,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871997897] [2021-11-03 07:02:44,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 07:02:44,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 07:02:44,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 07:02:44,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 07:02:44,119 INFO L87 Difference]: Start difference. First operand 298 states and 383 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:45,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 07:02:45,042 INFO L93 Difference]: Finished difference Result 619 states and 798 transitions. [2021-11-03 07:02:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 07:02:45,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 07:02:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 07:02:45,045 INFO L225 Difference]: With dead ends: 619 [2021-11-03 07:02:45,045 INFO L226 Difference]: Without dead ends: 474 [2021-11-03 07:02:45,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 07:02:45,046 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 720.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.75ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 874.95ms IncrementalHoareTripleChecker+Time [2021-11-03 07:02:45,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 1164 Unknown, 0 Unchecked, 6.75ms Time], IncrementalHoareTripleChecker [3 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 874.95ms Time] [2021-11-03 07:02:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-03 07:02:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 300. [2021-11-03 07:02:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 269 states have (on average 1.4312267657992566) internal successors, (385), 299 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 385 transitions. [2021-11-03 07:02:45,072 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 385 transitions. Word has length 44 [2021-11-03 07:02:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 07:02:45,072 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 385 transitions. [2021-11-03 07:02:45,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 385 transitions. [2021-11-03 07:02:45,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 07:02:45,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 07:02:45,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 07:02:45,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 07:02:45,078 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 07:02:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 07:02:45,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1543983351, now seen corresponding path program 1 times [2021-11-03 07:02:45,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 07:02:45,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853864701] [2021-11-03 07:02:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:45,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 07:02:45,098 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 07:02:45,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807437461] [2021-11-03 07:02:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:45,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:02:45,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 07:02:45,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 07:02:45,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 07:02:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 07:02:45,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 07:02:45,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 07:02:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 07:02:45,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 07:02:45,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 07:02:45,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853864701] [2021-11-03 07:02:45,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 07:02:45,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807437461] [2021-11-03 07:02:45,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807437461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 07:02:45,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 07:02:45,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 07:02:45,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693675999] [2021-11-03 07:02:45,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 07:02:45,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 07:02:45,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 07:02:45,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 07:02:45,466 INFO L87 Difference]: Start difference. First operand 300 states and 385 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 07:02:46,025 INFO L93 Difference]: Finished difference Result 617 states and 797 transitions. [2021-11-03 07:02:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 07:02:46,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 07:02:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 07:02:46,026 INFO L225 Difference]: With dead ends: 617 [2021-11-03 07:02:46,026 INFO L226 Difference]: Without dead ends: 321 [2021-11-03 07:02:46,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 07:02:46,028 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 450.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.11ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 538.21ms IncrementalHoareTripleChecker+Time [2021-11-03 07:02:46,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 783 Unknown, 0 Unchecked, 2.11ms Time], IncrementalHoareTripleChecker [28 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 538.21ms Time] [2021-11-03 07:02:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-03 07:02:46,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2021-11-03 07:02:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 289 states have (on average 1.4013840830449826) internal successors, (405), 319 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 405 transitions. [2021-11-03 07:02:46,040 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 405 transitions. Word has length 57 [2021-11-03 07:02:46,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 07:02:46,041 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 405 transitions. [2021-11-03 07:02:46,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:46,041 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 405 transitions. [2021-11-03 07:02:46,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 07:02:46,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 07:02:46,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 07:02:46,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 07:02:46,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:02:46,262 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 07:02:46,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 07:02:46,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1379176647, now seen corresponding path program 1 times [2021-11-03 07:02:46,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 07:02:46,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62489985] [2021-11-03 07:02:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:46,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 07:02:46,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 07:02:46,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122739676] [2021-11-03 07:02:46,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:46,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:02:46,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 07:02:46,276 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 07:02:46,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 07:02:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 07:02:46,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 07:02:46,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 07:02:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 07:02:46,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 07:02:46,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 07:02:46,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62489985] [2021-11-03 07:02:46,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 07:02:46,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122739676] [2021-11-03 07:02:46,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122739676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 07:02:46,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 07:02:46,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 07:02:46,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250357147] [2021-11-03 07:02:46,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 07:02:46,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 07:02:46,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 07:02:46,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 07:02:46,505 INFO L87 Difference]: Start difference. First operand 320 states and 405 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 07:02:47,014 INFO L93 Difference]: Finished difference Result 628 states and 798 transitions. [2021-11-03 07:02:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 07:02:47,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 07:02:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 07:02:47,016 INFO L225 Difference]: With dead ends: 628 [2021-11-03 07:02:47,016 INFO L226 Difference]: Without dead ends: 312 [2021-11-03 07:02:47,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 07:02:47,017 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 371 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 378.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 481.09ms IncrementalHoareTripleChecker+Time [2021-11-03 07:02:47,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 0 Invalid, 788 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [24 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 481.09ms Time] [2021-11-03 07:02:47,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-03 07:02:47,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 306. [2021-11-03 07:02:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 275 states have (on average 1.3963636363636365) internal successors, (384), 305 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 384 transitions. [2021-11-03 07:02:47,024 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 384 transitions. Word has length 57 [2021-11-03 07:02:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 07:02:47,024 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 384 transitions. [2021-11-03 07:02:47,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:47,024 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 384 transitions. [2021-11-03 07:02:47,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 07:02:47,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 07:02:47,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 07:02:47,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 07:02:47,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-03 07:02:47,240 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 07:02:47,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 07:02:47,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1996694677, now seen corresponding path program 1 times [2021-11-03 07:02:47,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 07:02:47,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477336611] [2021-11-03 07:02:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:47,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 07:02:47,251 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 07:02:47,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341407659] [2021-11-03 07:02:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:47,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:02:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 07:02:47,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 07:02:47,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 07:02:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 07:02:47,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 07:02:47,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 07:02:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 07:02:47,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 07:02:47,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 07:02:47,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477336611] [2021-11-03 07:02:47,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 07:02:47,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341407659] [2021-11-03 07:02:47,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341407659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 07:02:47,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 07:02:47,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 07:02:47,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264815557] [2021-11-03 07:02:47,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 07:02:47,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 07:02:47,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 07:02:47,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 07:02:47,582 INFO L87 Difference]: Start difference. First operand 306 states and 384 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 07:02:48,164 INFO L93 Difference]: Finished difference Result 779 states and 977 transitions. [2021-11-03 07:02:48,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 07:02:48,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 07:02:48,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 07:02:48,167 INFO L225 Difference]: With dead ends: 779 [2021-11-03 07:02:48,167 INFO L226 Difference]: Without dead ends: 477 [2021-11-03 07:02:48,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 07:02:48,168 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 178 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 436.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 560.68ms IncrementalHoareTripleChecker+Time [2021-11-03 07:02:48,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 0 Invalid, 793 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [5 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 560.68ms Time] [2021-11-03 07:02:48,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-03 07:02:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 444. [2021-11-03 07:02:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 413 states have (on average 1.3995157384987893) internal successors, (578), 443 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 578 transitions. [2021-11-03 07:02:48,176 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 578 transitions. Word has length 57 [2021-11-03 07:02:48,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 07:02:48,176 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 578 transitions. [2021-11-03 07:02:48,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 578 transitions. [2021-11-03 07:02:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 07:02:48,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 07:02:48,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 07:02:48,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 07:02:48,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:02:48,391 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 07:02:48,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 07:02:48,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1378561412, now seen corresponding path program 1 times [2021-11-03 07:02:48,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 07:02:48,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868785629] [2021-11-03 07:02:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:48,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 07:02:48,401 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 07:02:48,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608958408] [2021-11-03 07:02:48,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:48,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:02:48,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 07:02:48,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 07:02:48,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 07:02:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 07:02:48,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 07:02:48,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 07:02:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 07:02:48,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 07:02:48,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 07:02:48,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868785629] [2021-11-03 07:02:48,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 07:02:48,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608958408] [2021-11-03 07:02:48,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608958408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 07:02:48,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 07:02:48,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 07:02:48,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576415726] [2021-11-03 07:02:48,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 07:02:48,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 07:02:48,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 07:02:48,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 07:02:48,628 INFO L87 Difference]: Start difference. First operand 444 states and 578 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:50,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 07:02:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 07:02:50,507 INFO L93 Difference]: Finished difference Result 842 states and 1107 transitions. [2021-11-03 07:02:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 07:02:50,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 07:02:50,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 07:02:50,513 INFO L225 Difference]: With dead ends: 842 [2021-11-03 07:02:50,513 INFO L226 Difference]: Without dead ends: 446 [2021-11-03 07:02:50,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 07:02:50,516 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1757.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1855.51ms IncrementalHoareTripleChecker+Time [2021-11-03 07:02:50,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 752 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [2 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 1855.51ms Time] [2021-11-03 07:02:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-03 07:02:50,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2021-11-03 07:02:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 415 states have (on average 1.3975903614457832) internal successors, (580), 445 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 580 transitions. [2021-11-03 07:02:50,527 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 580 transitions. Word has length 64 [2021-11-03 07:02:50,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 07:02:50,529 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 580 transitions. [2021-11-03 07:02:50,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:50,529 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 580 transitions. [2021-11-03 07:02:50,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 07:02:50,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 07:02:50,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 07:02:50,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 07:02:50,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:02:50,743 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 07:02:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 07:02:50,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1147149435, now seen corresponding path program 1 times [2021-11-03 07:02:50,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 07:02:50,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140477178] [2021-11-03 07:02:50,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:50,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 07:02:50,754 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 07:02:50,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380268565] [2021-11-03 07:02:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:50,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:02:50,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 07:02:50,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 07:02:50,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 07:02:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 07:02:50,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 07:02:50,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 07:02:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 07:02:50,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 07:02:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 07:02:51,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 07:02:51,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140477178] [2021-11-03 07:02:51,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 07:02:51,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380268565] [2021-11-03 07:02:51,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380268565] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 07:02:51,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 07:02:51,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-03 07:02:51,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921370552] [2021-11-03 07:02:51,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 07:02:51,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 07:02:51,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 07:02:51,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 07:02:51,084 INFO L87 Difference]: Start difference. First operand 446 states and 580 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 07:02:51,746 INFO L93 Difference]: Finished difference Result 850 states and 1119 transitions. [2021-11-03 07:02:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 07:02:51,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 66 [2021-11-03 07:02:51,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 07:02:51,748 INFO L225 Difference]: With dead ends: 850 [2021-11-03 07:02:51,748 INFO L226 Difference]: Without dead ends: 452 [2021-11-03 07:02:51,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.83ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-03 07:02:51,749 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 518.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 630.85ms IncrementalHoareTripleChecker+Time [2021-11-03 07:02:51,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1140 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [12 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 630.85ms Time] [2021-11-03 07:02:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-03 07:02:51,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2021-11-03 07:02:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 421 states have (on average 1.3919239904988123) internal successors, (586), 451 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 586 transitions. [2021-11-03 07:02:51,757 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 586 transitions. Word has length 66 [2021-11-03 07:02:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 07:02:51,758 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 586 transitions. [2021-11-03 07:02:51,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:02:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 586 transitions. [2021-11-03 07:02:51,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 07:02:51,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 07:02:51,760 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 07:02:51,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-03 07:02:51,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:02:51,975 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 07:02:51,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 07:02:51,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1732821828, now seen corresponding path program 2 times [2021-11-03 07:02:51,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 07:02:51,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153439350] [2021-11-03 07:02:51,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:02:51,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 07:02:51,997 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 07:02:52,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195695435] [2021-11-03 07:02:52,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 07:02:52,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:02:52,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 07:02:52,003 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 07:02:52,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 07:13:17,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 07:13:17,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 07:13:17,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 07:13:17,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 07:13:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 07:13:17,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 07:13:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 07:13:18,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 07:13:18,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153439350] [2021-11-03 07:13:18,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 07:13:18,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195695435] [2021-11-03 07:13:18,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195695435] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 07:13:18,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 07:13:18,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-03 07:13:18,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023532198] [2021-11-03 07:13:18,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 07:13:18,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 07:13:18,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 07:13:18,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 07:13:18,068 INFO L87 Difference]: Start difference. First operand 452 states and 586 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:13:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 07:13:18,679 INFO L93 Difference]: Finished difference Result 863 states and 1133 transitions. [2021-11-03 07:13:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 07:13:18,680 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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 72 [2021-11-03 07:13:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 07:13:18,681 INFO L225 Difference]: With dead ends: 863 [2021-11-03 07:13:18,681 INFO L226 Difference]: Without dead ends: 459 [2021-11-03 07:13:18,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.32ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-03 07:13:18,682 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 478.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 592.27ms IncrementalHoareTripleChecker+Time [2021-11-03 07:13:18,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1156 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [19 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 592.27ms Time] [2021-11-03 07:13:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-03 07:13:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2021-11-03 07:13:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 428 states have (on average 1.3855140186915889) internal successors, (593), 458 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:13:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 593 transitions. [2021-11-03 07:13:18,689 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 593 transitions. Word has length 72 [2021-11-03 07:13:18,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 07:13:18,690 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 593 transitions. [2021-11-03 07:13:18,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 07:13:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 593 transitions. [2021-11-03 07:13:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 07:13:18,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 07:13:18,691 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 07:13:18,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 07:13:18,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:13:18,903 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 07:13:18,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 07:13:18,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1543831695, now seen corresponding path program 3 times [2021-11-03 07:13:18,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 07:13:18,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844877600] [2021-11-03 07:13:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 07:13:18,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 07:13:18,913 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 07:13:18,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169960806] [2021-11-03 07:13:18,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 07:13:18,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 07:13:18,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 07:13:18,917 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 07:13:18,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15