./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 16:40:28,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 16:40:28,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 16:40:28,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 16:40:28,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 16:40:28,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 16:40:28,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 16:40:28,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 16:40:28,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 16:40:28,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 16:40:28,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 16:40:28,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 16:40:28,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 16:40:28,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 16:40:28,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 16:40:28,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 16:40:28,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 16:40:28,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 16:40:28,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 16:40:28,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 16:40:28,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 16:40:28,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 16:40:28,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 16:40:28,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 16:40:28,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 16:40:28,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 16:40:28,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 16:40:28,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 16:40:28,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 16:40:28,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 16:40:28,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 16:40:28,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 16:40:28,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 16:40:28,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 16:40:28,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 16:40:28,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 16:40:28,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 16:40:28,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 16:40:28,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 16:40:28,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 16:40:28,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 16:40:28,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 16:40:28,419 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 16:40:28,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 16:40:28,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 16:40:28,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 16:40:28,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 16:40:28,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 16:40:28,421 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 16:40:28,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 16:40:28,422 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 16:40:28,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 16:40:28,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 16:40:28,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 16:40:28,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 16:40:28,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 16:40:28,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 16:40:28,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 16:40:28,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 16:40:28,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 16:40:28,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 16:40:28,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 16:40:28,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 16:40:28,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 16:40:28,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 16:40:28,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 16:40:28,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 16:40:28,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 16:40:28,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 16:40:28,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 16:40:28,425 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 16:40:28,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 16:40:28,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 16:40:28,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 16:40:28,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 [2021-11-04 16:40:28,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 16:40:28,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 16:40:28,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 16:40:28,639 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 16:40:28,640 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 16:40:28,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2021-11-04 16:40:28,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f327d4a2/bb4592645b6641a783ca53ab58f8973c/FLAGcea9debc1 [2021-11-04 16:40:29,108 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 16:40:29,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2021-11-04 16:40:29,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f327d4a2/bb4592645b6641a783ca53ab58f8973c/FLAGcea9debc1 [2021-11-04 16:40:29,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f327d4a2/bb4592645b6641a783ca53ab58f8973c [2021-11-04 16:40:29,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 16:40:29,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 16:40:29,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 16:40:29,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 16:40:29,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 16:40:29,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e1a190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29, skipping insertion in model container [2021-11-04 16:40:29,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 16:40:29,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 16:40:29,474 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i[33021,33034] [2021-11-04 16:40:29,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 16:40:29,557 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 16:40:29,584 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i[33021,33034] [2021-11-04 16:40:29,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 16:40:29,679 INFO L208 MainTranslator]: Completed translation [2021-11-04 16:40:29,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29 WrapperNode [2021-11-04 16:40:29,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 16:40:29,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 16:40:29,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 16:40:29,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 16:40:29,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 16:40:29,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 16:40:29,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 16:40:29,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 16:40:29,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 16:40:29,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 16:40:29,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 16:40:29,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 16:40:29,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29" (1/1) ... [2021-11-04 16:40:29,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 16:40:29,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:29,867 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) [2021-11-04 16:40:29,877 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 [2021-11-04 16:40:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 16:40:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 16:40:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 16:40:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 16:40:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 16:40:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 16:40:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 16:40:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 16:40:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 16:40:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 16:40:30,549 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 16:40:30,549 INFO L299 CfgBuilder]: Removed 107 assume(true) statements. [2021-11-04 16:40:30,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:40:30 BoogieIcfgContainer [2021-11-04 16:40:30,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 16:40:30,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 16:40:30,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 16:40:30,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 16:40:30,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:40:29" (1/3) ... [2021-11-04 16:40:30,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7136f090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:40:30, skipping insertion in model container [2021-11-04 16:40:30,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:40:29" (2/3) ... [2021-11-04 16:40:30,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7136f090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:40:30, skipping insertion in model container [2021-11-04 16:40:30,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:40:30" (3/3) ... [2021-11-04 16:40:30,558 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-2.i [2021-11-04 16:40:30,562 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 16:40:30,563 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-04 16:40:30,604 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 16:40:30,610 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 [2021-11-04 16:40:30,610 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-04 16:40:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 239 states have (on average 1.7238493723849373) internal successors, (412), 249 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) [2021-11-04 16:40:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-04 16:40:30,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:30,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:30,636 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:30,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-04 16:40:30,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:30,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191607507] [2021-11-04 16:40:30,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:30,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:40:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:40:30,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:30,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191607507] [2021-11-04 16:40:30,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191607507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:40:30,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:40:30,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 16:40:30,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301817999] [2021-11-04 16:40:30,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:40:30,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 16:40:30,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 16:40:30,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 16:40:30,788 INFO L87 Difference]: Start difference. First operand has 250 states, 239 states have (on average 1.7238493723849373) internal successors, (412), 249 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) 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) [2021-11-04 16:40:31,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:31,300 INFO L93 Difference]: Finished difference Result 498 states and 822 transitions. [2021-11-04 16:40:31,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 16:40:31,302 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 [2021-11-04 16:40:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:31,308 INFO L225 Difference]: With dead ends: 498 [2021-11-04 16:40:31,309 INFO L226 Difference]: Without dead ends: 217 [2021-11-04 16:40:31,313 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 [2021-11-04 16:40:31,316 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 376.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 460.87ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:31,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 326 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [0 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 460.87ms Time] [2021-11-04 16:40:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-04 16:40:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-04 16:40:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 216 states have internal predecessors, (282), 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) [2021-11-04 16:40:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-04 16:40:31,364 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-04 16:40:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:31,365 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-04 16:40:31,365 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) [2021-11-04 16:40:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-04 16:40:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-04 16:40:31,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:31,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:31,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 16:40:31,367 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-04 16:40:31,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:31,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181683974] [2021-11-04 16:40:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:31,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:40:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:40:31,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:31,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181683974] [2021-11-04 16:40:31,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181683974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:40:31,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:40:31,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:40:31,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807511267] [2021-11-04 16:40:31,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:40:31,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:40:31,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:31,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:40:31,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:40:31,432 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-04 16:40:32,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:32,144 INFO L93 Difference]: Finished difference Result 432 states and 562 transitions. [2021-11-04 16:40:32,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:40:32,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 [2021-11-04 16:40:32,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:32,146 INFO L225 Difference]: With dead ends: 432 [2021-11-04 16:40:32,147 INFO L226 Difference]: Without dead ends: 387 [2021-11-04 16:40:32,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:40:32,148 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 223 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 571.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.42ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 678.14ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:32,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 0 Invalid, 563 Unknown, 0 Unchecked, 4.42ms Time], IncrementalHoareTripleChecker [0 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 678.14ms Time] [2021-11-04 16:40:32,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-04 16:40:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 218. [2021-11-04 16:40:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 208 states have (on average 1.3605769230769231) internal successors, (283), 217 states have internal predecessors, (283), 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) [2021-11-04 16:40:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2021-11-04 16:40:32,158 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 8 [2021-11-04 16:40:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:32,158 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2021-11-04 16:40:32,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-04 16:40:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2021-11-04 16:40:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 16:40:32,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:32,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:32,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 16:40:32,162 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash -137963571, now seen corresponding path program 1 times [2021-11-04 16:40:32,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:32,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064935799] [2021-11-04 16:40:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:32,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:32,178 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:32,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664305240] [2021-11-04 16:40:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:32,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:32,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:32,181 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) [2021-11-04 16:40:32,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 16:40:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:40:32,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:40:32,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:40:32,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:40:32,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:32,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064935799] [2021-11-04 16:40:32,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:32,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664305240] [2021-11-04 16:40:32,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664305240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:40:32,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:40:32,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:40:32,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737951021] [2021-11-04 16:40:32,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:40:32,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:40:32,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:32,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:40:32,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:40:32,582 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-04 16:40:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:33,184 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2021-11-04 16:40:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:40:33,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-11-04 16:40:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:33,185 INFO L225 Difference]: With dead ends: 454 [2021-11-04 16:40:33,186 INFO L226 Difference]: Without dead ends: 239 [2021-11-04 16:40:33,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:40:33,187 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 498.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 582.18ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:33,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 581 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [28 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 582.18ms Time] [2021-11-04 16:40:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-04 16:40:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-11-04 16:40:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 228 states have (on average 1.3289473684210527) internal successors, (303), 237 states have internal predecessors, (303), 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) [2021-11-04 16:40:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 303 transitions. [2021-11-04 16:40:33,194 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 303 transitions. Word has length 106 [2021-11-04 16:40:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:33,194 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 303 transitions. [2021-11-04 16:40:33,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-04 16:40:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 303 transitions. [2021-11-04 16:40:33,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 16:40:33,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:33,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:33,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 16:40:33,415 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 [2021-11-04 16:40:33,416 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:33,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:33,416 INFO L85 PathProgramCache]: Analyzing trace with hash 62310097, now seen corresponding path program 1 times [2021-11-04 16:40:33,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:33,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408544534] [2021-11-04 16:40:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:33,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:33,429 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:33,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005050908] [2021-11-04 16:40:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:33,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:33,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:33,431 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) [2021-11-04 16:40:33,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 16:40:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:40:33,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:40:33,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:40:33,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:40:33,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:33,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408544534] [2021-11-04 16:40:33,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:33,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005050908] [2021-11-04 16:40:33,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005050908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:40:33,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:40:33,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:40:33,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038491608] [2021-11-04 16:40:33,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:40:33,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:40:33,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:33,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:40:33,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:40:33,754 INFO L87 Difference]: Start difference. First operand 238 states and 303 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-04 16:40:34,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:34,284 INFO L93 Difference]: Finished difference Result 494 states and 634 transitions. [2021-11-04 16:40:34,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:40:34,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-11-04 16:40:34,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:34,287 INFO L225 Difference]: With dead ends: 494 [2021-11-04 16:40:34,287 INFO L226 Difference]: Without dead ends: 259 [2021-11-04 16:40:34,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:40:34,288 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 428.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 512.37ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:34,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 581 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [28 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 512.37ms Time] [2021-11-04 16:40:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-04 16:40:34,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2021-11-04 16:40:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 248 states have (on average 1.3024193548387097) internal successors, (323), 257 states have internal predecessors, (323), 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) [2021-11-04 16:40:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2021-11-04 16:40:34,295 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 106 [2021-11-04 16:40:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:34,296 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2021-11-04 16:40:34,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-04 16:40:34,297 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2021-11-04 16:40:34,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 16:40:34,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:34,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:34,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-04 16:40:34,511 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 [2021-11-04 16:40:34,512 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:34,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:34,512 INFO L85 PathProgramCache]: Analyzing trace with hash -426500019, now seen corresponding path program 1 times [2021-11-04 16:40:34,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:34,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892589857] [2021-11-04 16:40:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:34,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:34,526 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:34,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068912169] [2021-11-04 16:40:34,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:34,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:34,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:34,528 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) [2021-11-04 16:40:34,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 16:40:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:40:34,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:40:34,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:40:34,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:40:34,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:34,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892589857] [2021-11-04 16:40:34,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:34,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068912169] [2021-11-04 16:40:34,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068912169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:40:34,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:40:34,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:40:34,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547289696] [2021-11-04 16:40:34,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:40:34,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:40:34,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:34,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:40:34,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:40:34,869 INFO L87 Difference]: Start difference. First operand 258 states and 323 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-04 16:40:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:35,403 INFO L93 Difference]: Finished difference Result 505 states and 635 transitions. [2021-11-04 16:40:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:40:35,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 106 [2021-11-04 16:40:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:35,405 INFO L225 Difference]: With dead ends: 505 [2021-11-04 16:40:35,405 INFO L226 Difference]: Without dead ends: 250 [2021-11-04 16:40:35,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:40:35,406 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 270 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 422.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 508.64ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:35,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 0 Invalid, 583 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [24 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 508.64ms Time] [2021-11-04 16:40:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-04 16:40:35,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2021-11-04 16:40:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 234 states have (on average 1.2905982905982907) internal successors, (302), 243 states have internal predecessors, (302), 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) [2021-11-04 16:40:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions. [2021-11-04 16:40:35,414 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 106 [2021-11-04 16:40:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:35,414 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions. [2021-11-04 16:40:35,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-04 16:40:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions. [2021-11-04 16:40:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 16:40:35,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:35,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:35,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 16:40:35,623 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 [2021-11-04 16:40:35,624 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:35,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1791075329, now seen corresponding path program 1 times [2021-11-04 16:40:35,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:35,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283825763] [2021-11-04 16:40:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:35,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:35,635 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:35,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974019199] [2021-11-04 16:40:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:35,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:35,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:35,637 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) [2021-11-04 16:40:35,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 16:40:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:40:35,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:40:35,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:40:35,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:40:35,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:35,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283825763] [2021-11-04 16:40:35,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:35,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974019199] [2021-11-04 16:40:35,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974019199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:40:35,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:40:35,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:40:35,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71262040] [2021-11-04 16:40:35,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:40:35,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:40:35,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:35,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:40:35,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:40:35,931 INFO L87 Difference]: Start difference. First operand 244 states and 302 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-04 16:40:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:36,780 INFO L93 Difference]: Finished difference Result 566 states and 702 transitions. [2021-11-04 16:40:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:40:36,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 106 [2021-11-04 16:40:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:36,782 INFO L225 Difference]: With dead ends: 566 [2021-11-04 16:40:36,782 INFO L226 Difference]: Without dead ends: 325 [2021-11-04 16:40:36,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:40:36,783 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 263 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 695.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 817.14ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:36,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 0 Invalid, 878 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [24 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 817.14ms Time] [2021-11-04 16:40:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-04 16:40:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 230. [2021-11-04 16:40:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 220 states have (on average 1.2772727272727273) internal successors, (281), 229 states have internal predecessors, (281), 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) [2021-11-04 16:40:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2021-11-04 16:40:36,788 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 106 [2021-11-04 16:40:36,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:36,789 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2021-11-04 16:40:36,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-04 16:40:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2021-11-04 16:40:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 16:40:36,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:36,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:36,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 16:40:36,999 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 [2021-11-04 16:40:36,999 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:37,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:37,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1369189005, now seen corresponding path program 1 times [2021-11-04 16:40:37,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:37,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850240777] [2021-11-04 16:40:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:37,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:37,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:37,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521829499] [2021-11-04 16:40:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:37,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:37,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:37,013 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) [2021-11-04 16:40:37,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 16:40:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:40:37,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:40:37,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:40:37,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:40:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:40:37,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:37,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850240777] [2021-11-04 16:40:37,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:37,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521829499] [2021-11-04 16:40:37,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521829499] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:40:37,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:40:37,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 16:40:37,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699674050] [2021-11-04 16:40:37,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:40:37,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 16:40:37,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 16:40:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:40:37,553 INFO L87 Difference]: Start difference. First operand 230 states and 281 transitions. Second operand has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 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) [2021-11-04 16:40:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:38,943 INFO L93 Difference]: Finished difference Result 821 states and 1005 transitions. [2021-11-04 16:40:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 16:40:38,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 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 106 [2021-11-04 16:40:38,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:38,947 INFO L225 Difference]: With dead ends: 821 [2021-11-04 16:40:38,947 INFO L226 Difference]: Without dead ends: 776 [2021-11-04 16:40:38,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.44ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:40:38,949 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1172 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1156.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.73ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1338.74ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:38,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 0 Invalid, 1017 Unknown, 0 Unchecked, 5.73ms Time], IncrementalHoareTripleChecker [4 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1338.74ms Time] [2021-11-04 16:40:38,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-04 16:40:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2021-11-04 16:40:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 766 states have (on average 1.2362924281984333) internal successors, (947), 775 states have internal predecessors, (947), 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) [2021-11-04 16:40:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 947 transitions. [2021-11-04 16:40:38,965 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 947 transitions. Word has length 106 [2021-11-04 16:40:38,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:38,965 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 947 transitions. [2021-11-04 16:40:38,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 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) [2021-11-04 16:40:38,965 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 947 transitions. [2021-11-04 16:40:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-04 16:40:38,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:38,968 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:38,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-04 16:40:39,173 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 [2021-11-04 16:40:39,173 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:39,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:39,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1181109906, now seen corresponding path program 2 times [2021-11-04 16:40:39,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:39,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073672798] [2021-11-04 16:40:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:39,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:39,197 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:39,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339757764] [2021-11-04 16:40:39,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:40:39,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:39,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:39,199 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) [2021-11-04 16:40:39,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 16:40:39,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-04 16:40:39,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:40:39,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-04 16:40:39,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2021-11-04 16:40:40,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:40:40,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:40,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073672798] [2021-11-04 16:40:40,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:40,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339757764] [2021-11-04 16:40:40,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339757764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:40:40,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:40:40,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:40:40,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41753588] [2021-11-04 16:40:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:40:40,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:40:40,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:40,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:40:40,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:40:40,797 INFO L87 Difference]: Start difference. First operand 776 states and 947 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-04 16:40:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:42,394 INFO L93 Difference]: Finished difference Result 1405 states and 1719 transitions. [2021-11-04 16:40:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:40:42,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 400 [2021-11-04 16:40:42,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:42,397 INFO L225 Difference]: With dead ends: 1405 [2021-11-04 16:40:42,397 INFO L226 Difference]: Without dead ends: 774 [2021-11-04 16:40:42,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.07ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:40:42,399 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1452.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1574.35ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:42,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 794 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [2 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1574.35ms Time] [2021-11-04 16:40:42,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-04 16:40:42,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2021-11-04 16:40:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 764 states have (on average 1.2356020942408377) internal successors, (944), 773 states have internal predecessors, (944), 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) [2021-11-04 16:40:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 944 transitions. [2021-11-04 16:40:42,413 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 944 transitions. Word has length 400 [2021-11-04 16:40:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:42,414 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 944 transitions. [2021-11-04 16:40:42,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-04 16:40:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 944 transitions. [2021-11-04 16:40:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-04 16:40:42,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:42,418 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:42,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 16:40:42,635 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 [2021-11-04 16:40:42,636 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:42,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1217332562, now seen corresponding path program 1 times [2021-11-04 16:40:42,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:42,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852639236] [2021-11-04 16:40:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:42,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:42,661 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:42,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999347437] [2021-11-04 16:40:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:42,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:42,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:42,663 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) [2021-11-04 16:40:42,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 16:40:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:40:42,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:40:42,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-04 16:40:43,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:40:43,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:43,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852639236] [2021-11-04 16:40:43,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:43,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999347437] [2021-11-04 16:40:43,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999347437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:40:43,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:40:43,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:40:43,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681419635] [2021-11-04 16:40:43,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:40:43,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:40:43,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:43,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:40:43,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:40:43,404 INFO L87 Difference]: Start difference. First operand 774 states and 944 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2021-11-04 16:40:43,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:43,980 INFO L93 Difference]: Finished difference Result 1512 states and 1861 transitions. [2021-11-04 16:40:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:40:43,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 407 [2021-11-04 16:40:43,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:43,982 INFO L225 Difference]: With dead ends: 1512 [2021-11-04 16:40:43,982 INFO L226 Difference]: Without dead ends: 790 [2021-11-04 16:40:43,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:40:43,983 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 442.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 544.07ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:43,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 538 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [6 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 544.07ms Time] [2021-11-04 16:40:43,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-04 16:40:43,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2021-11-04 16:40:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 780 states have (on average 1.2307692307692308) internal successors, (960), 789 states have internal predecessors, (960), 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) [2021-11-04 16:40:43,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 960 transitions. [2021-11-04 16:40:43,997 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 960 transitions. Word has length 407 [2021-11-04 16:40:43,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:43,998 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 960 transitions. [2021-11-04 16:40:43,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2021-11-04 16:40:43,999 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 960 transitions. [2021-11-04 16:40:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-04 16:40:44,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:44,003 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:44,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-04 16:40:44,216 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 [2021-11-04 16:40:44,217 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:44,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:44,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1245585389, now seen corresponding path program 1 times [2021-11-04 16:40:44,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:44,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588336096] [2021-11-04 16:40:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:44,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:44,248 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:44,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346676041] [2021-11-04 16:40:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:44,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:44,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:44,250 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) [2021-11-04 16:40:44,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 16:40:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:40:44,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 16:40:44,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 250 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-04 16:40:44,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:40:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 250 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-04 16:40:45,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:45,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588336096] [2021-11-04 16:40:45,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:45,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346676041] [2021-11-04 16:40:45,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346676041] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:40:45,502 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:40:45,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 16:40:45,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98696005] [2021-11-04 16:40:45,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:40:45,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 16:40:45,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 16:40:45,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:40:45,503 INFO L87 Difference]: Start difference. First operand 790 states and 960 transitions. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2021-11-04 16:40:46,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:46,088 INFO L93 Difference]: Finished difference Result 1575 states and 1956 transitions. [2021-11-04 16:40:46,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 16:40:46,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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 409 [2021-11-04 16:40:46,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:46,090 INFO L225 Difference]: With dead ends: 1575 [2021-11-04 16:40:46,091 INFO L226 Difference]: Without dead ends: 838 [2021-11-04 16:40:46,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.03ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:40:46,092 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 480.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 563.30ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:46,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 581 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [37 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 563.30ms Time] [2021-11-04 16:40:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-11-04 16:40:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2021-11-04 16:40:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 828 states have (on average 1.2173913043478262) internal successors, (1008), 837 states have internal predecessors, (1008), 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) [2021-11-04 16:40:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1008 transitions. [2021-11-04 16:40:46,106 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1008 transitions. Word has length 409 [2021-11-04 16:40:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:46,106 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1008 transitions. [2021-11-04 16:40:46,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2021-11-04 16:40:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1008 transitions. [2021-11-04 16:40:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-11-04 16:40:46,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:46,111 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:46,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-04 16:40:46,326 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 [2021-11-04 16:40:46,326 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:46,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:46,327 INFO L85 PathProgramCache]: Analyzing trace with hash 354957970, now seen corresponding path program 2 times [2021-11-04 16:40:46,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:46,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502522665] [2021-11-04 16:40:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:46,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:46,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:46,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674493146] [2021-11-04 16:40:46,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:40:46,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:46,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:46,343 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) [2021-11-04 16:40:46,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 16:40:46,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 16:40:46,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:40:46,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 16:40:46,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 250 proven. 10 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-04 16:40:47,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:40:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 250 proven. 10 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-04 16:40:47,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:47,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502522665] [2021-11-04 16:40:47,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:47,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674493146] [2021-11-04 16:40:47,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674493146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:40:47,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:40:47,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 16:40:47,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709726744] [2021-11-04 16:40:47,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:40:47,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 16:40:47,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:47,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 16:40:47,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 16:40:47,649 INFO L87 Difference]: Start difference. First operand 838 states and 1008 transitions. Second operand has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 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) [2021-11-04 16:40:49,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:49,096 INFO L93 Difference]: Finished difference Result 1716 states and 2145 transitions. [2021-11-04 16:40:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 16:40:49,097 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 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 415 [2021-11-04 16:40:49,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:49,099 INFO L225 Difference]: With dead ends: 1716 [2021-11-04 16:40:49,099 INFO L226 Difference]: Without dead ends: 934 [2021-11-04 16:40:49,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.19ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 16:40:49,101 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1186.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.72ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1410.60ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:49,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1937 Unknown, 0 Unchecked, 4.72ms Time], IncrementalHoareTripleChecker [69 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 1410.60ms Time] [2021-11-04 16:40:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-11-04 16:40:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 934. [2021-11-04 16:40:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 924 states have (on average 1.1948051948051948) internal successors, (1104), 933 states have internal predecessors, (1104), 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) [2021-11-04 16:40:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1104 transitions. [2021-11-04 16:40:49,117 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1104 transitions. Word has length 415 [2021-11-04 16:40:49,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:49,118 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 1104 transitions. [2021-11-04 16:40:49,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.416666666666668) internal successors, (209), 12 states have internal predecessors, (209), 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) [2021-11-04 16:40:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1104 transitions. [2021-11-04 16:40:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-11-04 16:40:49,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:49,121 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:49,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-04 16:40:49,331 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 [2021-11-04 16:40:49,331 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:49,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:49,332 INFO L85 PathProgramCache]: Analyzing trace with hash -378589582, now seen corresponding path program 3 times [2021-11-04 16:40:49,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:49,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751881758] [2021-11-04 16:40:49,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:49,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:49,360 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:49,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915763272] [2021-11-04 16:40:49,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 16:40:49,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:49,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:49,361 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) [2021-11-04 16:40:49,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 16:40:49,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 16:40:49,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:40:49,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 16:40:49,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2021-11-04 16:40:50,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:40:50,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:50,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751881758] [2021-11-04 16:40:50,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:50,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915763272] [2021-11-04 16:40:50,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915763272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:40:50,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:40:50,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:40:50,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276070493] [2021-11-04 16:40:50,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:40:50,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:40:50,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:50,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:40:50,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:40:50,807 INFO L87 Difference]: Start difference. First operand 934 states and 1104 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2021-11-04 16:40:51,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:51,342 INFO L93 Difference]: Finished difference Result 1790 states and 2122 transitions. [2021-11-04 16:40:51,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:40:51,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 427 [2021-11-04 16:40:51,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:51,345 INFO L225 Difference]: With dead ends: 1790 [2021-11-04 16:40:51,346 INFO L226 Difference]: Without dead ends: 932 [2021-11-04 16:40:51,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:40:51,347 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 438.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 514.77ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:51,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 525 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [1 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 514.77ms Time] [2021-11-04 16:40:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-11-04 16:40:51,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2021-11-04 16:40:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 922 states have (on average 1.1941431670281997) internal successors, (1101), 931 states have internal predecessors, (1101), 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) [2021-11-04 16:40:51,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1101 transitions. [2021-11-04 16:40:51,365 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1101 transitions. Word has length 427 [2021-11-04 16:40:51,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:51,365 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1101 transitions. [2021-11-04 16:40:51,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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) [2021-11-04 16:40:51,366 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1101 transitions. [2021-11-04 16:40:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2021-11-04 16:40:51,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:51,368 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:51,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-04 16:40:51,588 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 [2021-11-04 16:40:51,589 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:51,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:51,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1684890018, now seen corresponding path program 1 times [2021-11-04 16:40:51,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:51,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201072604] [2021-11-04 16:40:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:51,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:51,605 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:51,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921002299] [2021-11-04 16:40:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:51,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:51,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:51,607 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) [2021-11-04 16:40:51,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-04 16:40:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:40:51,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 16:40:51,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 109 proven. 55 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-11-04 16:40:52,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:40:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 109 proven. 55 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-11-04 16:40:53,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:53,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201072604] [2021-11-04 16:40:53,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:53,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921002299] [2021-11-04 16:40:53,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921002299] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:40:53,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:40:53,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-04 16:40:53,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461312668] [2021-11-04 16:40:53,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:40:53,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-04 16:40:53,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-04 16:40:53,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 16:40:53,271 INFO L87 Difference]: Start difference. First operand 932 states and 1101 transitions. Second operand has 24 states, 24 states have (on average 7.75) internal successors, (186), 24 states have internal predecessors, (186), 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) [2021-11-04 16:40:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:54,390 INFO L93 Difference]: Finished difference Result 1996 states and 2520 transitions. [2021-11-04 16:40:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-04 16:40:54,391 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.75) internal successors, (186), 24 states have internal predecessors, (186), 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 454 [2021-11-04 16:40:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:54,393 INFO L225 Difference]: With dead ends: 1996 [2021-11-04 16:40:54,394 INFO L226 Difference]: Without dead ends: 1124 [2021-11-04 16:40:54,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 210.46ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 16:40:54,395 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 872.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.53ms SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1066.02ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:54,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1342 Unknown, 0 Unchecked, 3.53ms Time], IncrementalHoareTripleChecker [206 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1066.02ms Time] [2021-11-04 16:40:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-11-04 16:40:54,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1124. [2021-11-04 16:40:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1114 states have (on average 1.1606822262118492) internal successors, (1293), 1123 states have internal predecessors, (1293), 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) [2021-11-04 16:40:54,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1293 transitions. [2021-11-04 16:40:54,419 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1293 transitions. Word has length 454 [2021-11-04 16:40:54,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:54,420 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 1293 transitions. [2021-11-04 16:40:54,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.75) internal successors, (186), 24 states have internal predecessors, (186), 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) [2021-11-04 16:40:54,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1293 transitions. [2021-11-04 16:40:54,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2021-11-04 16:40:54,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:54,423 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:54,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-04 16:40:54,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-04 16:40:54,639 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:54,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1031309602, now seen corresponding path program 2 times [2021-11-04 16:40:54,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:54,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411560696] [2021-11-04 16:40:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:54,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:54,666 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:54,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706524206] [2021-11-04 16:40:54,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:40:54,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:54,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:54,667 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:40:54,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-04 16:40:55,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 16:40:55,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:40:55,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-04 16:40:55,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:40:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 109 proven. 253 refuted. 0 times theorem prover too weak. 1230 trivial. 0 not checked. [2021-11-04 16:40:55,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:40:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 109 proven. 253 refuted. 0 times theorem prover too weak. 1230 trivial. 0 not checked. [2021-11-04 16:40:57,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:40:57,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411560696] [2021-11-04 16:40:57,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:40:57,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706524206] [2021-11-04 16:40:57,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706524206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:40:57,303 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:40:57,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-04 16:40:57,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622269929] [2021-11-04 16:40:57,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:40:57,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-04 16:40:57,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:40:57,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-04 16:40:57,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 16:40:57,305 INFO L87 Difference]: Start difference. First operand 1124 states and 1293 transitions. Second operand has 48 states, 48 states have (on average 4.375) internal successors, (210), 48 states have internal predecessors, (210), 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) [2021-11-04 16:40:58,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:40:58,524 INFO L93 Difference]: Finished difference Result 2528 states and 3212 transitions. [2021-11-04 16:40:58,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-04 16:40:58,525 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.375) internal successors, (210), 48 states have internal predecessors, (210), 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 502 [2021-11-04 16:40:58,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:40:58,529 INFO L225 Difference]: With dead ends: 2528 [2021-11-04 16:40:58,529 INFO L226 Difference]: Without dead ends: 1476 [2021-11-04 16:40:58,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 941.10ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 16:40:58,531 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 890.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.57ms SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1100.46ms IncrementalHoareTripleChecker+Time [2021-11-04 16:40:58,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1508 Unknown, 0 Unchecked, 3.57ms Time], IncrementalHoareTripleChecker [544 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 1100.46ms Time] [2021-11-04 16:40:58,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-04 16:40:58,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1476. [2021-11-04 16:40:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1466 states have (on average 1.1221009549795362) internal successors, (1645), 1475 states have internal predecessors, (1645), 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) [2021-11-04 16:40:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1645 transitions. [2021-11-04 16:40:58,576 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1645 transitions. Word has length 502 [2021-11-04 16:40:58,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:40:58,576 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 1645 transitions. [2021-11-04 16:40:58,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.375) internal successors, (210), 48 states have internal predecessors, (210), 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) [2021-11-04 16:40:58,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1645 transitions. [2021-11-04 16:40:58,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2021-11-04 16:40:58,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:40:58,581 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:40:58,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-04 16:40:58,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-04 16:40:58,805 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 16:40:58,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:40:58,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1349968158, now seen corresponding path program 3 times [2021-11-04 16:40:58,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:40:58,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635015562] [2021-11-04 16:40:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:40:58,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:40:58,827 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:40:58,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706513681] [2021-11-04 16:40:58,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 16:40:58,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:40:58,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:40:58,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:40:58,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Killed by 15