./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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_SAX_test6-1.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 ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 22:39:22,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:39:22,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:39:22,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:39:22,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:39:22,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:39:22,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:39:22,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:39:22,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:39:22,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:39:22,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:39:22,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:39:22,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:39:22,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:39:22,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:39:22,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:39:22,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:39:22,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:39:22,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:39:22,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:39:22,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:39:22,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:39:22,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:39:22,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:39:22,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:39:22,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:39:22,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:39:22,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:39:22,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:39:22,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:39:22,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:39:22,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:39:22,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:39:22,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:39:22,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:39:22,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:39:22,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:39:22,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:39:22,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:39:22,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:39:22,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:39:22,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 22:39:22,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:39:22,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:39:22,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:39:22,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:39:22,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:39:22,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:39:22,457 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:39:22,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:39:22,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:39:22,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 22:39:22,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:39:22,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:39:22,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:39:22,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:39:22,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:39:22,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:39:22,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:39:22,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:39:22,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:39:22,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:39:22,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:39:22,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:39:22,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:39:22,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:39:22,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:39:22,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:39:22,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 22:39:22,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 22:39:22,461 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:39:22,461 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:39:22,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:39:22,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:39:22,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5be3465740cb655882704e7eef418c95d0bbd56a2060e741c7d3e996e58af7 [2021-11-07 22:39:22,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:39:22,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:39:22,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:39:22,639 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:39:22,640 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:39:22,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2021-11-07 22:39:22,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94745a3c5/8a98afe6e393421aa92744c05344d9b9/FLAG26a47cf13 [2021-11-07 22:39:23,066 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:39:23,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-1.i [2021-11-07 22:39:23,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94745a3c5/8a98afe6e393421aa92744c05344d9b9/FLAG26a47cf13 [2021-11-07 22:39:23,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94745a3c5/8a98afe6e393421aa92744c05344d9b9 [2021-11-07 22:39:23,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:39:23,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:39:23,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:39:23,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:39:23,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:39:23,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:39:23" (1/1) ... [2021-11-07 22:39:23,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bee912b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:23, skipping insertion in model container [2021-11-07 22:39:23,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:39:23" (1/1) ... [2021-11-07 22:39:23,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:39:23,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:39:23,784 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_SAX_test6-1.i[44118,44131] [2021-11-07 22:39:23,791 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_SAX_test6-1.i[44660,44673] [2021-11-07 22:39:23,858 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_SAX_test6-1.i[56247,56260] [2021-11-07 22:39:23,858 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_SAX_test6-1.i[56368,56381] [2021-11-07 22:39:23,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:39:23,869 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:39:23,908 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_SAX_test6-1.i[44118,44131] [2021-11-07 22:39:23,910 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_SAX_test6-1.i[44660,44673] [2021-11-07 22:39:23,958 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_SAX_test6-1.i[56247,56260] [2021-11-07 22:39:23,964 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_SAX_test6-1.i[56368,56381] [2021-11-07 22:39:23,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:39:24,005 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:39:24,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24 WrapperNode [2021-11-07 22:39:24,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:39:24,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:39:24,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:39:24,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:39:24,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24" (1/1) ... [2021-11-07 22:39:24,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24" (1/1) ... [2021-11-07 22:39:24,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:39:24,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:39:24,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:39:24,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:39:24,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24" (1/1) ... [2021-11-07 22:39:24,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24" (1/1) ... [2021-11-07 22:39:24,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24" (1/1) ... [2021-11-07 22:39:24,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24" (1/1) ... [2021-11-07 22:39:24,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24" (1/1) ... [2021-11-07 22:39:24,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24" (1/1) ... [2021-11-07 22:39:24,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24" (1/1) ... [2021-11-07 22:39:24,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:39:24,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:39:24,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:39:24,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:39:24,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24" (1/1) ... [2021-11-07 22:39:24,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:39:24,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:24,192 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) [2021-11-07 22:39:24,210 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 [2021-11-07 22:39:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:39:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 22:39:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:39:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:39:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 22:39:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 22:39:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:39:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:39:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 22:39:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:39:24,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:39:25,075 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:39:25,076 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-07 22:39:25,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:39:25 BoogieIcfgContainer [2021-11-07 22:39:25,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:39:25,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:39:25,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:39:25,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:39:25,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:39:23" (1/3) ... [2021-11-07 22:39:25,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6c4310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:39:25, skipping insertion in model container [2021-11-07 22:39:25,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:39:24" (2/3) ... [2021-11-07 22:39:25,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6c4310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:39:25, skipping insertion in model container [2021-11-07 22:39:25,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:39:25" (3/3) ... [2021-11-07 22:39:25,082 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-1.i [2021-11-07 22:39:25,085 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:39:25,085 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-07 22:39:25,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:39:25,118 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 [2021-11-07 22:39:25,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-07 22:39:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 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) [2021-11-07 22:39:25,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 22:39:25,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:25,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:39:25,136 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-07 22:39:25,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:25,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751207935] [2021-11-07 22:39:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:25,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:39:25,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:25,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751207935] [2021-11-07 22:39:25,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751207935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:39:25,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:39:25,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 22:39:25,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892265642] [2021-11-07 22:39:25,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:39:25,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:39:25,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:25,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:39:25,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:39:25,313 INFO L87 Difference]: Start difference. First operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:25,361 INFO L93 Difference]: Finished difference Result 466 states and 739 transitions. [2021-11-07 22:39:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:39:25,363 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 22:39:25,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:25,373 INFO L225 Difference]: With dead ends: 466 [2021-11-07 22:39:25,374 INFO L226 Difference]: Without dead ends: 227 [2021-11-07 22:39:25,377 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 [2021-11-07 22:39:25,380 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:25,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 3.99ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:39:25,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-07 22:39:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-07 22:39:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 216 states have (on average 1.3194444444444444) internal successors, (285), 226 states have internal predecessors, (285), 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) [2021-11-07 22:39:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 285 transitions. [2021-11-07 22:39:25,425 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 285 transitions. Word has length 8 [2021-11-07 22:39:25,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:25,426 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 285 transitions. [2021-11-07 22:39:25,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 285 transitions. [2021-11-07 22:39:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 22:39:25,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:25,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:39:25,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 22:39:25,428 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-07 22:39:25,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:25,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561968164] [2021-11-07 22:39:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:25,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:39:25,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:25,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561968164] [2021-11-07 22:39:25,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561968164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:39:25,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:39:25,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:39:25,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427801138] [2021-11-07 22:39:25,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:39:25,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:39:25,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:25,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:39:25,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:39:25,507 INFO L87 Difference]: Start difference. First operand 227 states and 285 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:25,764 INFO L93 Difference]: Finished difference Result 479 states and 601 transitions. [2021-11-07 22:39:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:39:25,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 22:39:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:25,767 INFO L225 Difference]: With dead ends: 479 [2021-11-07 22:39:25,767 INFO L226 Difference]: Without dead ends: 369 [2021-11-07 22:39:25,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:39:25,768 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 170 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 195.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 234.28ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:25,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 700 Invalid, 170 Unknown, 0 Unchecked, 3.77ms Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 234.28ms Time] [2021-11-07 22:39:25,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-07 22:39:25,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 229. [2021-11-07 22:39:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.31651376146789) internal successors, (287), 228 states have internal predecessors, (287), 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) [2021-11-07 22:39:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 287 transitions. [2021-11-07 22:39:25,790 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 287 transitions. Word has length 10 [2021-11-07 22:39:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:25,790 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 287 transitions. [2021-11-07 22:39:25,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 287 transitions. [2021-11-07 22:39:25,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 22:39:25,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:25,797 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] [2021-11-07 22:39:25,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 22:39:25,797 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:25,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:25,798 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-07 22:39:25,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:25,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228235261] [2021-11-07 22:39:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:25,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:25,822 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:39:25,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279895488] [2021-11-07 22:39:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:25,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:25,825 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) [2021-11-07 22:39:25,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 22:39:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:26,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:39:26,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:39:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:39:26,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:39:26,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:26,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228235261] [2021-11-07 22:39:26,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:39:26,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279895488] [2021-11-07 22:39:26,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279895488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:39:26,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:39:26,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:39:26,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988746791] [2021-11-07 22:39:26,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:39:26,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:39:26,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:26,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:39:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:39:26,118 INFO L87 Difference]: Start difference. First operand 229 states and 287 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:26,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:26,164 INFO L93 Difference]: Finished difference Result 475 states and 601 transitions. [2021-11-07 22:39:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:39:26,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 22:39:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:26,166 INFO L225 Difference]: With dead ends: 475 [2021-11-07 22:39:26,166 INFO L226 Difference]: Without dead ends: 250 [2021-11-07 22:39:26,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:39:26,171 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 9 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.13ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:26,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 515 Invalid, 72 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 39.13ms Time] [2021-11-07 22:39:26,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-07 22:39:26,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2021-11-07 22:39:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 238 states have (on average 1.2899159663865547) internal successors, (307), 248 states have internal predecessors, (307), 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) [2021-11-07 22:39:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 307 transitions. [2021-11-07 22:39:26,185 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 307 transitions. Word has length 44 [2021-11-07 22:39:26,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:26,185 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 307 transitions. [2021-11-07 22:39:26,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:26,185 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 307 transitions. [2021-11-07 22:39:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 22:39:26,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:26,186 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] [2021-11-07 22:39:26,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 22:39:26,397 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 [2021-11-07 22:39:26,397 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:26,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:26,398 INFO L85 PathProgramCache]: Analyzing trace with hash -821195099, now seen corresponding path program 1 times [2021-11-07 22:39:26,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:26,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597351699] [2021-11-07 22:39:26,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:26,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:26,408 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:39:26,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776114188] [2021-11-07 22:39:26,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:26,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:26,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:26,410 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) [2021-11-07 22:39:26,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 22:39:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:26,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:39:26,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:39:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:39:26,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:39:26,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:26,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597351699] [2021-11-07 22:39:26,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:39:26,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776114188] [2021-11-07 22:39:26,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776114188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:39:26,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:39:26,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:39:26,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889298571] [2021-11-07 22:39:26,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:39:26,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:39:26,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:26,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:39:26,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:39:26,591 INFO L87 Difference]: Start difference. First operand 249 states and 307 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) [2021-11-07 22:39:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:26,642 INFO L93 Difference]: Finished difference Result 487 states and 603 transitions. [2021-11-07 22:39:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:39:26,643 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 [2021-11-07 22:39:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:26,644 INFO L225 Difference]: With dead ends: 487 [2021-11-07 22:39:26,644 INFO L226 Difference]: Without dead ends: 242 [2021-11-07 22:39:26,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:39:26,645 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 273 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.60ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:26,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 529 Invalid, 66 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 40.60ms Time] [2021-11-07 22:39:26,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-07 22:39:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2021-11-07 22:39:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 224 states have (on average 1.2767857142857142) internal successors, (286), 234 states have internal predecessors, (286), 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) [2021-11-07 22:39:26,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 286 transitions. [2021-11-07 22:39:26,650 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 286 transitions. Word has length 44 [2021-11-07 22:39:26,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:26,651 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 286 transitions. [2021-11-07 22:39:26,651 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) [2021-11-07 22:39:26,651 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 286 transitions. [2021-11-07 22:39:26,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 22:39:26,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:26,652 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] [2021-11-07 22:39:26,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 22:39:26,869 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 [2021-11-07 22:39:26,869 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:26,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-07 22:39:26,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:26,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371822707] [2021-11-07 22:39:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:26,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:26,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:39:26,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200346178] [2021-11-07 22:39:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:26,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:26,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:26,893 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) [2021-11-07 22:39:26,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 22:39:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:27,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 22:39:27,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:39:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:39:27,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:39:27,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:27,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371822707] [2021-11-07 22:39:27,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:39:27,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200346178] [2021-11-07 22:39:27,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200346178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:39:27,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:39:27,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:39:27,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226658567] [2021-11-07 22:39:27,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:39:27,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:39:27,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:27,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:39:27,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:39:27,098 INFO L87 Difference]: Start difference. First operand 235 states and 286 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) [2021-11-07 22:39:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:27,160 INFO L93 Difference]: Finished difference Result 446 states and 549 transitions. [2021-11-07 22:39:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 22:39:27,160 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 [2021-11-07 22:39:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:27,162 INFO L225 Difference]: With dead ends: 446 [2021-11-07 22:39:27,162 INFO L226 Difference]: Without dead ends: 444 [2021-11-07 22:39:27,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.74ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:39:27,163 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 263 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.12ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:27,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 1289 Invalid, 35 Unknown, 0 Unchecked, 1.95ms Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 48.12ms Time] [2021-11-07 22:39:27,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-07 22:39:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 233. [2021-11-07 22:39:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 223 states have (on average 1.2735426008968609) internal successors, (284), 232 states have internal predecessors, (284), 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) [2021-11-07 22:39:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 284 transitions. [2021-11-07 22:39:27,169 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 284 transitions. Word has length 44 [2021-11-07 22:39:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:27,169 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 284 transitions. [2021-11-07 22:39:27,170 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) [2021-11-07 22:39:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 284 transitions. [2021-11-07 22:39:27,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 22:39:27,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:27,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:39:27,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 22:39:27,391 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 [2021-11-07 22:39:27,392 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:27,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:27,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-07 22:39:27,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:27,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163676359] [2021-11-07 22:39:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:27,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:27,403 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:39:27,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4133707] [2021-11-07 22:39:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:27,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:27,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:27,405 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) [2021-11-07 22:39:27,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 22:39:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:27,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 22:39:27,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:39:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:39:27,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:39:27,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:27,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163676359] [2021-11-07 22:39:27,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:39:27,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4133707] [2021-11-07 22:39:27,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4133707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:39:27,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:39:27,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:39:27,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295246553] [2021-11-07 22:39:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:39:27,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 22:39:27,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 22:39:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:39:27,656 INFO L87 Difference]: Start difference. First operand 233 states and 284 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:27,736 INFO L93 Difference]: Finished difference Result 940 states and 1155 transitions. [2021-11-07 22:39:27,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 22:39:27,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 22:39:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:27,739 INFO L225 Difference]: With dead ends: 940 [2021-11-07 22:39:27,739 INFO L226 Difference]: Without dead ends: 711 [2021-11-07 22:39:27,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.87ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:39:27,740 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 983 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.69ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:27,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 1054 Invalid, 56 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 56.69ms Time] [2021-11-07 22:39:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-11-07 22:39:27,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 325. [2021-11-07 22:39:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 316 states have (on average 1.25) internal successors, (395), 324 states have internal predecessors, (395), 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) [2021-11-07 22:39:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 395 transitions. [2021-11-07 22:39:27,752 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 395 transitions. Word has length 51 [2021-11-07 22:39:27,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:27,753 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 395 transitions. [2021-11-07 22:39:27,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 395 transitions. [2021-11-07 22:39:27,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 22:39:27,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:27,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:39:27,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 22:39:27,971 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 [2021-11-07 22:39:27,971 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:27,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:27,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1193587178, now seen corresponding path program 1 times [2021-11-07 22:39:27,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:27,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518260156] [2021-11-07 22:39:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:27,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:27,982 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:39:27,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871017473] [2021-11-07 22:39:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:27,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:27,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:27,993 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) [2021-11-07 22:39:27,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 22:39:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:28,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:39:28,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:39:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:39:28,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:39:28,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:28,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518260156] [2021-11-07 22:39:28,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:39:28,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871017473] [2021-11-07 22:39:28,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871017473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:39:28,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:39:28,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:39:28,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329436100] [2021-11-07 22:39:28,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:39:28,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:39:28,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:39:28,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:39:28,303 INFO L87 Difference]: Start difference. First operand 325 states and 395 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:28,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:28,375 INFO L93 Difference]: Finished difference Result 686 states and 832 transitions. [2021-11-07 22:39:28,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:39:28,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 22:39:28,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:28,377 INFO L225 Difference]: With dead ends: 686 [2021-11-07 22:39:28,377 INFO L226 Difference]: Without dead ends: 365 [2021-11-07 22:39:28,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:39:28,378 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 137 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.20ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:28,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 548 Invalid, 35 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 63.20ms Time] [2021-11-07 22:39:28,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-07 22:39:28,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 336. [2021-11-07 22:39:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 328 states have (on average 1.2560975609756098) internal successors, (412), 335 states have internal predecessors, (412), 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) [2021-11-07 22:39:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 412 transitions. [2021-11-07 22:39:28,385 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 412 transitions. Word has length 54 [2021-11-07 22:39:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:28,386 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 412 transitions. [2021-11-07 22:39:28,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 412 transitions. [2021-11-07 22:39:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 22:39:28,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:28,394 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:39:28,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 22:39:28,602 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 [2021-11-07 22:39:28,602 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:28,603 INFO L85 PathProgramCache]: Analyzing trace with hash 901612414, now seen corresponding path program 1 times [2021-11-07 22:39:28,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:28,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011589644] [2021-11-07 22:39:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:28,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:28,619 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:39:28,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354032465] [2021-11-07 22:39:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:28,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:28,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:28,621 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) [2021-11-07 22:39:28,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 22:39:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:28,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:39:28,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:39:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:39:28,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:39:28,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:28,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011589644] [2021-11-07 22:39:28,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:39:28,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354032465] [2021-11-07 22:39:28,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354032465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:39:28,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:39:28,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:39:28,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310261607] [2021-11-07 22:39:28,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:39:28,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:39:28,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:28,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:39:28,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:39:28,887 INFO L87 Difference]: Start difference. First operand 336 states and 412 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:28,952 INFO L93 Difference]: Finished difference Result 626 states and 773 transitions. [2021-11-07 22:39:28,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:39:28,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 22:39:28,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:28,954 INFO L225 Difference]: With dead ends: 626 [2021-11-07 22:39:28,954 INFO L226 Difference]: Without dead ends: 342 [2021-11-07 22:39:28,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.16ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:39:28,955 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 16 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.01ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:28,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 775 Invalid, 25 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 56.01ms Time] [2021-11-07 22:39:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-07 22:39:28,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2021-11-07 22:39:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 328 states have (on average 1.2530487804878048) internal successors, (411), 335 states have internal predecessors, (411), 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) [2021-11-07 22:39:28,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 411 transitions. [2021-11-07 22:39:28,962 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 411 transitions. Word has length 78 [2021-11-07 22:39:28,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:28,963 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 411 transitions. [2021-11-07 22:39:28,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 411 transitions. [2021-11-07 22:39:28,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 22:39:28,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:28,964 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:39:28,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 22:39:29,179 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 [2021-11-07 22:39:29,179 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:29,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:29,180 INFO L85 PathProgramCache]: Analyzing trace with hash -611683268, now seen corresponding path program 1 times [2021-11-07 22:39:29,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:29,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590330901] [2021-11-07 22:39:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:29,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:29,189 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:39:29,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941838215] [2021-11-07 22:39:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:29,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:29,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:29,193 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) [2021-11-07 22:39:29,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 22:39:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:29,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:39:29,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:39:29,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 22:39:29,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 22:39:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 22:39:29,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:39:29,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:29,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590330901] [2021-11-07 22:39:29,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:39:29,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941838215] [2021-11-07 22:39:29,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941838215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:39:29,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:39:29,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:39:29,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775927237] [2021-11-07 22:39:29,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:39:29,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:39:29,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:39:29,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:39:29,458 INFO L87 Difference]: Start difference. First operand 336 states and 411 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:29,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:29,649 INFO L93 Difference]: Finished difference Result 447 states and 551 transitions. [2021-11-07 22:39:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:39:29,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 22:39:29,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:29,651 INFO L225 Difference]: With dead ends: 447 [2021-11-07 22:39:29,651 INFO L226 Difference]: Without dead ends: 431 [2021-11-07 22:39:29,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:39:29,651 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 147 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.01ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 173.05ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:29,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 670 Invalid, 149 Unknown, 0 Unchecked, 2.01ms Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 173.05ms Time] [2021-11-07 22:39:29,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-07 22:39:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 338. [2021-11-07 22:39:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 330 states have (on average 1.2515151515151515) internal successors, (413), 337 states have internal predecessors, (413), 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) [2021-11-07 22:39:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 413 transitions. [2021-11-07 22:39:29,659 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 413 transitions. Word has length 79 [2021-11-07 22:39:29,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:29,659 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 413 transitions. [2021-11-07 22:39:29,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:29,660 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 413 transitions. [2021-11-07 22:39:29,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 22:39:29,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:29,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:39:29,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 22:39:29,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:29,875 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:29,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1201768388, now seen corresponding path program 1 times [2021-11-07 22:39:29,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:29,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588618126] [2021-11-07 22:39:29,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:29,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:29,885 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:39:29,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625709670] [2021-11-07 22:39:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:29,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:29,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:29,887 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:39:29,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 22:39:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:30,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 22:39:30,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:39:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:39:30,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:39:30,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:30,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588618126] [2021-11-07 22:39:30,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:39:30,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625709670] [2021-11-07 22:39:30,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625709670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:39:30,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:39:30,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 22:39:30,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094084264] [2021-11-07 22:39:30,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:39:30,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 22:39:30,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:30,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 22:39:30,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:39:30,259 INFO L87 Difference]: Start difference. First operand 338 states and 413 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-11-07 22:39:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:30,304 INFO L93 Difference]: Finished difference Result 625 states and 771 transitions. [2021-11-07 22:39:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 22:39:30,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 81 [2021-11-07 22:39:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:30,306 INFO L225 Difference]: With dead ends: 625 [2021-11-07 22:39:30,306 INFO L226 Difference]: Without dead ends: 339 [2021-11-07 22:39:30,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.24ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 22:39:30,307 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 263 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.46ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:30,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 966 Invalid, 29 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 28.46ms Time] [2021-11-07 22:39:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-07 22:39:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2021-11-07 22:39:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 331 states have (on average 1.2507552870090635) internal successors, (414), 338 states have internal predecessors, (414), 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) [2021-11-07 22:39:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 414 transitions. [2021-11-07 22:39:30,315 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 414 transitions. Word has length 81 [2021-11-07 22:39:30,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:30,315 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 414 transitions. [2021-11-07 22:39:30,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-11-07 22:39:30,315 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 414 transitions. [2021-11-07 22:39:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 22:39:30,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:30,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:39:30,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 22:39:30,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 22:39:30,532 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:30,532 INFO L85 PathProgramCache]: Analyzing trace with hash -169971840, now seen corresponding path program 1 times [2021-11-07 22:39:30,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:30,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667549751] [2021-11-07 22:39:30,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:30,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:30,542 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:39:30,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41498156] [2021-11-07 22:39:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:30,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:30,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:30,543 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:39:30,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 22:39:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:30,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 22:39:30,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:39:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:39:30,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:39:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:39:31,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:31,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667549751] [2021-11-07 22:39:31,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:39:31,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41498156] [2021-11-07 22:39:31,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41498156] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:39:31,045 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:39:31,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-11-07 22:39:31,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655636341] [2021-11-07 22:39:31,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:39:31,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 22:39:31,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:31,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 22:39:31,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 22:39:31,047 INFO L87 Difference]: Start difference. First operand 339 states and 414 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:31,547 INFO L93 Difference]: Finished difference Result 631 states and 781 transitions. [2021-11-07 22:39:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 22:39:31,547 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 22:39:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:31,549 INFO L225 Difference]: With dead ends: 631 [2021-11-07 22:39:31,549 INFO L226 Difference]: Without dead ends: 344 [2021-11-07 22:39:31,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 143.70ms TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2021-11-07 22:39:31,550 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 781 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 322.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 370.80ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:31,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 1668 Invalid, 313 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [35 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 370.80ms Time] [2021-11-07 22:39:31,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-07 22:39:31,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-11-07 22:39:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 336 states have (on average 1.2470238095238095) internal successors, (419), 343 states have internal predecessors, (419), 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) [2021-11-07 22:39:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 419 transitions. [2021-11-07 22:39:31,559 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 419 transitions. Word has length 82 [2021-11-07 22:39:31,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:31,559 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 419 transitions. [2021-11-07 22:39:31,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 22:39:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 419 transitions. [2021-11-07 22:39:31,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 22:39:31,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:31,560 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:39:31,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 22:39:31,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:31,775 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:31,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1893525028, now seen corresponding path program 1 times [2021-11-07 22:39:31,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:31,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198159747] [2021-11-07 22:39:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:31,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:31,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:39:31,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142315636] [2021-11-07 22:39:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:31,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:31,795 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:39:31,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 22:39:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:39:31,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 22:39:31,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:39:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 22:39:32,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:39:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 22:39:32,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:39:32,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198159747] [2021-11-07 22:39:32,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:39:32,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142315636] [2021-11-07 22:39:32,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142315636] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:39:32,262 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:39:32,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2021-11-07 22:39:32,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459629365] [2021-11-07 22:39:32,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:39:32,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 22:39:32,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:39:32,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 22:39:32,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-07 22:39:32,263 INFO L87 Difference]: Start difference. First operand 344 states and 419 transitions. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 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) [2021-11-07 22:39:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:39:33,310 INFO L93 Difference]: Finished difference Result 681 states and 840 transitions. [2021-11-07 22:39:33,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 22:39:33,310 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 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 87 [2021-11-07 22:39:33,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:39:33,311 INFO L225 Difference]: With dead ends: 681 [2021-11-07 22:39:33,312 INFO L226 Difference]: Without dead ends: 347 [2021-11-07 22:39:33,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 837.78ms TimeCoverageRelationStatistics Valid=317, Invalid=739, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 22:39:33,313 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 520 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 245.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.16ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 279.55ms IncrementalHoareTripleChecker+Time [2021-11-07 22:39:33,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 1944 Invalid, 356 Unknown, 0 Unchecked, 3.16ms Time], IncrementalHoareTripleChecker [68 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 279.55ms Time] [2021-11-07 22:39:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-07 22:39:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-11-07 22:39:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 339 states have (on average 1.238938053097345) internal successors, (420), 346 states have internal predecessors, (420), 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) [2021-11-07 22:39:33,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 420 transitions. [2021-11-07 22:39:33,321 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 420 transitions. Word has length 87 [2021-11-07 22:39:33,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:39:33,321 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 420 transitions. [2021-11-07 22:39:33,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 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) [2021-11-07 22:39:33,321 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 420 transitions. [2021-11-07 22:39:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 22:39:33,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:39:33,322 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:39:33,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 22:39:33,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 22:39:33,535 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-07 22:39:33,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:39:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash -887407617, now seen corresponding path program 2 times [2021-11-07 22:39:33,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:39:33,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043808709] [2021-11-07 22:39:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:39:33,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:39:33,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:39:33,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434748939] [2021-11-07 22:39:33,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:39:33,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:39:33,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:39:33,546 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 22:39:33,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process Killed by 15