./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 22:36:48,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 22:36:48,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 22:36:48,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 22:36:48,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 22:36:48,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 22:36:48,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 22:36:48,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 22:36:48,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 22:36:48,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 22:36:48,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 22:36:48,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 22:36:48,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 22:36:48,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 22:36:48,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 22:36:48,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 22:36:48,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 22:36:48,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 22:36:48,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 22:36:48,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 22:36:48,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 22:36:48,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 22:36:48,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 22:36:48,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 22:36:48,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 22:36:48,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 22:36:48,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 22:36:48,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 22:36:48,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 22:36:48,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 22:36:48,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 22:36:48,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 22:36:48,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 22:36:48,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 22:36:48,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 22:36:48,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 22:36:48,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 22:36:48,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 22:36:48,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 22:36:48,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 22:36:48,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 22:36:48,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 22:36:48,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 22:36:48,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 22:36:48,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 22:36:48,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 22:36:48,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 22:36:48,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 22:36:48,404 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 22:36:48,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 22:36:48,405 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 22:36:48,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 22:36:48,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 22:36:48,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 22:36:48,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 22:36:48,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 22:36:48,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 22:36:48,406 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 22:36:48,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 22:36:48,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 22:36:48,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 22:36:48,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 22:36:48,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 22:36:48,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 22:36:48,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:36:48,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 22:36:48,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 22:36:48,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 22:36:48,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 22:36:48,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 22:36:48,409 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 22:36:48,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 22:36:48,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 22:36:48,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 22:36:48,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2021-11-06 22:36:48,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 22:36:48,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 22:36:48,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 22:36:48,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 22:36:48,613 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 22:36:48,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-06 22:36:48,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38d53930d/a907d468c95d46398c6d5a628e0afc05/FLAGb689db433 [2021-11-06 22:36:49,157 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 22:36:49,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-11-06 22:36:49,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38d53930d/a907d468c95d46398c6d5a628e0afc05/FLAGb689db433 [2021-11-06 22:36:49,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38d53930d/a907d468c95d46398c6d5a628e0afc05 [2021-11-06 22:36:49,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 22:36:49,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 22:36:49,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 22:36:49,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 22:36:49,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 22:36:49,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:49" (1/1) ... [2021-11-06 22:36:49,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eff727d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:49, skipping insertion in model container [2021-11-06 22:36:49,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:49" (1/1) ... [2021-11-06 22:36:49,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 22:36:49,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 22:36:50,201 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_BER_test6-2.i[44118,44131] [2021-11-06 22:36:50,213 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_BER_test6-2.i[44660,44673] [2021-11-06 22:36:50,301 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_BER_test6-2.i[56247,56260] [2021-11-06 22:36:50,304 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_BER_test6-2.i[56368,56381] [2021-11-06 22:36:50,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:36:50,321 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 22:36:50,371 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_BER_test6-2.i[44118,44131] [2021-11-06 22:36:50,373 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_BER_test6-2.i[44660,44673] [2021-11-06 22:36:50,414 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_BER_test6-2.i[56247,56260] [2021-11-06 22:36:50,415 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_BER_test6-2.i[56368,56381] [2021-11-06 22:36:50,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:36:50,522 INFO L208 MainTranslator]: Completed translation [2021-11-06 22:36:50,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50 WrapperNode [2021-11-06 22:36:50,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 22:36:50,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 22:36:50,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 22:36:50,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 22:36:50,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50" (1/1) ... [2021-11-06 22:36:50,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50" (1/1) ... [2021-11-06 22:36:50,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 22:36:50,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 22:36:50,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 22:36:50,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 22:36:50,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50" (1/1) ... [2021-11-06 22:36:50,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50" (1/1) ... [2021-11-06 22:36:50,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50" (1/1) ... [2021-11-06 22:36:50,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50" (1/1) ... [2021-11-06 22:36:50,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50" (1/1) ... [2021-11-06 22:36:50,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50" (1/1) ... [2021-11-06 22:36:50,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50" (1/1) ... [2021-11-06 22:36:50,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 22:36:50,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 22:36:50,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 22:36:50,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 22:36:50,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50" (1/1) ... [2021-11-06 22:36:50,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:36:50,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:50,807 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) [2021-11-06 22:36:50,812 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 [2021-11-06 22:36:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 22:36:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 22:36:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 22:36:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 22:36:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 22:36:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 22:36:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 22:36:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 22:36:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 22:36:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 22:36:50,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 22:36:51,756 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 22:36:51,756 INFO L299 CfgBuilder]: Removed 124 assume(true) statements. [2021-11-06 22:36:51,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:51 BoogieIcfgContainer [2021-11-06 22:36:51,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 22:36:51,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 22:36:51,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 22:36:51,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 22:36:51,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:36:49" (1/3) ... [2021-11-06 22:36:51,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48efc24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:51, skipping insertion in model container [2021-11-06 22:36:51,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:50" (2/3) ... [2021-11-06 22:36:51,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48efc24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:51, skipping insertion in model container [2021-11-06 22:36:51,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:51" (3/3) ... [2021-11-06 22:36:51,763 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-2.i [2021-11-06 22:36:51,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 22:36:51,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-06 22:36:51,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 22:36:51,800 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 [2021-11-06 22:36:51,800 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-06 22:36:51,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 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) [2021-11-06 22:36:51,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 22:36:51,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:51,816 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:51,817 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-06 22:36:51,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:51,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183645887] [2021-11-06 22:36:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:51,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:51,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:51,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183645887] [2021-11-06 22:36:51,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183645887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:51,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:51,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 22:36:51,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715404236] [2021-11-06 22:36:51,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 22:36:51,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:51,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 22:36:51,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 22:36:51,984 INFO L87 Difference]: Start difference. First operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 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) [2021-11-06 22:36:52,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:52,028 INFO L93 Difference]: Finished difference Result 544 states and 861 transitions. [2021-11-06 22:36:52,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 22:36:52,030 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 [2021-11-06 22:36:52,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:52,042 INFO L225 Difference]: With dead ends: 544 [2021-11-06 22:36:52,042 INFO L226 Difference]: Without dead ends: 266 [2021-11-06 22:36:52,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 22:36:52,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-06 22:36:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-06 22:36:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 253 states have (on average 1.3241106719367588) internal successors, (335), 265 states have internal predecessors, (335), 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) [2021-11-06 22:36:52,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 335 transitions. [2021-11-06 22:36:52,088 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 335 transitions. Word has length 8 [2021-11-06 22:36:52,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:52,088 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 335 transitions. [2021-11-06 22:36:52,089 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) [2021-11-06 22:36:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 335 transitions. [2021-11-06 22:36:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-06 22:36:52,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:52,090 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:52,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 22:36:52,091 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:52,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:52,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-06 22:36:52,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:52,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704251567] [2021-11-06 22:36:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:52,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:52,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:52,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704251567] [2021-11-06 22:36:52,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704251567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:52,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:52,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:52,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294947969] [2021-11-06 22:36:52,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:52,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:52,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:52,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:52,175 INFO L87 Difference]: Start difference. First operand 266 states and 335 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:52,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:52,473 INFO L93 Difference]: Finished difference Result 589 states and 741 transitions. [2021-11-06 22:36:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:52,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-06 22:36:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:52,477 INFO L225 Difference]: With dead ends: 589 [2021-11-06 22:36:52,478 INFO L226 Difference]: Without dead ends: 440 [2021-11-06 22:36:52,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:52,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-06 22:36:52,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 268. [2021-11-06 22:36:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 255 states have (on average 1.3215686274509804) internal successors, (337), 267 states have internal predecessors, (337), 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) [2021-11-06 22:36:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 337 transitions. [2021-11-06 22:36:52,496 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 337 transitions. Word has length 10 [2021-11-06 22:36:52,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:52,497 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 337 transitions. [2021-11-06 22:36:52,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:52,497 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 337 transitions. [2021-11-06 22:36:52,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 22:36:52,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:52,498 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:52,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 22:36:52,499 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:52,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:52,499 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-06 22:36:52,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:52,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311747081] [2021-11-06 22:36:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:52,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:52,543 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:52,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878017879] [2021-11-06 22:36:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:52,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:52,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:52,547 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) [2021-11-06 22:36:52,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 22:36:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:52,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:52,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:52,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:52,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311747081] [2021-11-06 22:36:52,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:52,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878017879] [2021-11-06 22:36:52,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878017879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:52,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:52,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:52,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072819267] [2021-11-06 22:36:52,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:36:52,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:52,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:36:52,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:52,802 INFO L87 Difference]: Start difference. First operand 268 states and 337 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:52,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:52,849 INFO L93 Difference]: Finished difference Result 553 states and 701 transitions. [2021-11-06 22:36:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:36:52,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 22:36:52,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:52,851 INFO L225 Difference]: With dead ends: 553 [2021-11-06 22:36:52,851 INFO L226 Difference]: Without dead ends: 289 [2021-11-06 22:36:52,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:52,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-06 22:36:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288. [2021-11-06 22:36:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 275 states have (on average 1.298181818181818) internal successors, (357), 287 states have internal predecessors, (357), 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) [2021-11-06 22:36:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 357 transitions. [2021-11-06 22:36:52,860 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 357 transitions. Word has length 44 [2021-11-06 22:36:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:52,861 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 357 transitions. [2021-11-06 22:36:52,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 357 transitions. [2021-11-06 22:36:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 22:36:52,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:52,862 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:52,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 22:36:53,079 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 [2021-11-06 22:36:53,080 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:53,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash -821195099, now seen corresponding path program 1 times [2021-11-06 22:36:53,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:53,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189632306] [2021-11-06 22:36:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:53,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:53,102 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:53,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443434112] [2021-11-06 22:36:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:53,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:53,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:53,112 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) [2021-11-06 22:36:53,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 22:36:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:53,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:53,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:53,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:53,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189632306] [2021-11-06 22:36:53,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:53,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443434112] [2021-11-06 22:36:53,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443434112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:53,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:53,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:53,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074069046] [2021-11-06 22:36:53,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:53,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:53,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:53,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:53,373 INFO L87 Difference]: Start difference. First operand 288 states and 357 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:53,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:53,410 INFO L93 Difference]: Finished difference Result 565 states and 703 transitions. [2021-11-06 22:36:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:53,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 22:36:53,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:53,411 INFO L225 Difference]: With dead ends: 565 [2021-11-06 22:36:53,412 INFO L226 Difference]: Without dead ends: 281 [2021-11-06 22:36:53,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-06 22:36:53,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 274. [2021-11-06 22:36:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 261 states have (on average 1.2873563218390804) internal successors, (336), 273 states have internal predecessors, (336), 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) [2021-11-06 22:36:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 336 transitions. [2021-11-06 22:36:53,419 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 336 transitions. Word has length 44 [2021-11-06 22:36:53,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:53,420 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 336 transitions. [2021-11-06 22:36:53,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:53,420 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 336 transitions. [2021-11-06 22:36:53,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 22:36:53,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:53,421 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:53,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:53,638 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 [2021-11-06 22:36:53,638 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:53,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:53,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-06 22:36:53,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:53,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189057699] [2021-11-06 22:36:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:53,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:53,659 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:53,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018158911] [2021-11-06 22:36:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:53,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:53,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:53,662 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) [2021-11-06 22:36:53,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 22:36:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:53,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 22:36:53,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:53,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:53,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189057699] [2021-11-06 22:36:53,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:53,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018158911] [2021-11-06 22:36:53,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018158911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:53,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:53,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:53,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036336667] [2021-11-06 22:36:53,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:53,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:53,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:53,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:53,929 INFO L87 Difference]: Start difference. First operand 274 states and 336 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:53,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:54,000 INFO L93 Difference]: Finished difference Result 485 states and 599 transitions. [2021-11-06 22:36:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 22:36:54,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 22:36:54,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:54,002 INFO L225 Difference]: With dead ends: 485 [2021-11-06 22:36:54,002 INFO L226 Difference]: Without dead ends: 483 [2021-11-06 22:36:54,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-06 22:36:54,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 272. [2021-11-06 22:36:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 260 states have (on average 1.2846153846153847) internal successors, (334), 271 states have internal predecessors, (334), 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) [2021-11-06 22:36:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 334 transitions. [2021-11-06 22:36:54,008 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 334 transitions. Word has length 44 [2021-11-06 22:36:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:54,012 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 334 transitions. [2021-11-06 22:36:54,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 334 transitions. [2021-11-06 22:36:54,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 22:36:54,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:54,013 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:54,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 22:36:54,227 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 [2021-11-06 22:36:54,227 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:54,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:54,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-06 22:36:54,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:54,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685287393] [2021-11-06 22:36:54,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:54,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:54,242 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:54,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000758010] [2021-11-06 22:36:54,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:54,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:54,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:54,244 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) [2021-11-06 22:36:54,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 22:36:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:54,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 22:36:54,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:54,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:54,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685287393] [2021-11-06 22:36:54,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:54,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000758010] [2021-11-06 22:36:54,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000758010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:54,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:54,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:54,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006084185] [2021-11-06 22:36:54,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 22:36:54,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:54,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 22:36:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:54,533 INFO L87 Difference]: Start difference. First operand 272 states and 334 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:54,671 INFO L93 Difference]: Finished difference Result 1120 states and 1390 transitions. [2021-11-06 22:36:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 22:36:54,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 22:36:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:54,674 INFO L225 Difference]: With dead ends: 1120 [2021-11-06 22:36:54,674 INFO L226 Difference]: Without dead ends: 852 [2021-11-06 22:36:54,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-11-06 22:36:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 364. [2021-11-06 22:36:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 353 states have (on average 1.2606232294617563) internal successors, (445), 363 states have internal predecessors, (445), 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) [2021-11-06 22:36:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 445 transitions. [2021-11-06 22:36:54,684 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 445 transitions. Word has length 51 [2021-11-06 22:36:54,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:54,684 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 445 transitions. [2021-11-06 22:36:54,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 445 transitions. [2021-11-06 22:36:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 22:36:54,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:54,685 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:54,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-06 22:36:54,901 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 [2021-11-06 22:36:54,902 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:54,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:54,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1193587178, now seen corresponding path program 1 times [2021-11-06 22:36:54,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:54,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188569133] [2021-11-06 22:36:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:54,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:54,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:54,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827255615] [2021-11-06 22:36:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:54,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:54,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:54,924 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) [2021-11-06 22:36:54,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 22:36:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:55,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:36:55,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:55,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:55,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188569133] [2021-11-06 22:36:55,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:55,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827255615] [2021-11-06 22:36:55,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827255615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:55,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:55,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:55,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921619655] [2021-11-06 22:36:55,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:36:55,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:55,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:36:55,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:55,334 INFO L87 Difference]: Start difference. First operand 364 states and 445 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:55,412 INFO L93 Difference]: Finished difference Result 802 states and 981 transitions. [2021-11-06 22:36:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:36:55,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-06 22:36:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:55,414 INFO L225 Difference]: With dead ends: 802 [2021-11-06 22:36:55,414 INFO L226 Difference]: Without dead ends: 442 [2021-11-06 22:36:55,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:36:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-06 22:36:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 385. [2021-11-06 22:36:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 375 states have (on average 1.2693333333333334) internal successors, (476), 384 states have internal predecessors, (476), 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) [2021-11-06 22:36:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 476 transitions. [2021-11-06 22:36:55,423 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 476 transitions. Word has length 54 [2021-11-06 22:36:55,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:55,423 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 476 transitions. [2021-11-06 22:36:55,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:55,424 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 476 transitions. [2021-11-06 22:36:55,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 22:36:55,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:55,425 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:55,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:55,642 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 [2021-11-06 22:36:55,643 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:55,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:55,643 INFO L85 PathProgramCache]: Analyzing trace with hash 901612414, now seen corresponding path program 1 times [2021-11-06 22:36:55,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:55,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066731797] [2021-11-06 22:36:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:55,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:55,654 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:55,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763622976] [2021-11-06 22:36:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:55,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:55,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:55,656 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) [2021-11-06 22:36:55,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 22:36:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:55,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:36:55,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:56,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:56,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066731797] [2021-11-06 22:36:56,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:56,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763622976] [2021-11-06 22:36:56,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763622976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:56,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:56,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:36:56,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215922365] [2021-11-06 22:36:56,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:56,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:56,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:56,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:56,036 INFO L87 Difference]: Start difference. First operand 385 states and 476 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:56,133 INFO L93 Difference]: Finished difference Result 724 states and 901 transitions. [2021-11-06 22:36:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:56,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 22:36:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:56,135 INFO L225 Difference]: With dead ends: 724 [2021-11-06 22:36:56,135 INFO L226 Difference]: Without dead ends: 391 [2021-11-06 22:36:56,135 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-06 22:36:56,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 385. [2021-11-06 22:36:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 375 states have (on average 1.2666666666666666) internal successors, (475), 384 states have internal predecessors, (475), 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) [2021-11-06 22:36:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 475 transitions. [2021-11-06 22:36:56,142 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 475 transitions. Word has length 78 [2021-11-06 22:36:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:56,143 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 475 transitions. [2021-11-06 22:36:56,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 475 transitions. [2021-11-06 22:36:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 22:36:56,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:56,144 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:56,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:56,362 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 [2021-11-06 22:36:56,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:56,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:56,363 INFO L85 PathProgramCache]: Analyzing trace with hash -611683268, now seen corresponding path program 1 times [2021-11-06 22:36:56,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:56,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243834855] [2021-11-06 22:36:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:56,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:56,374 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:56,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244670699] [2021-11-06 22:36:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:56,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:56,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:56,376 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) [2021-11-06 22:36:56,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 22:36:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:56,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:36:56,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:56,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 22:36:56,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-06 22:36:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 22:36:56,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:56,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243834855] [2021-11-06 22:36:56,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:56,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244670699] [2021-11-06 22:36:56,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244670699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:56,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:56,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:36:56,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901744379] [2021-11-06 22:36:56,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:36:56,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:56,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:36:56,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:36:56,752 INFO L87 Difference]: Start difference. First operand 385 states and 475 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:57,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:57,036 INFO L93 Difference]: Finished difference Result 535 states and 665 transitions. [2021-11-06 22:36:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:36:57,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-06 22:36:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:57,038 INFO L225 Difference]: With dead ends: 535 [2021-11-06 22:36:57,038 INFO L226 Difference]: Without dead ends: 480 [2021-11-06 22:36:57,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-06 22:36:57,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 387. [2021-11-06 22:36:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 377 states have (on average 1.2652519893899203) internal successors, (477), 386 states have internal predecessors, (477), 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) [2021-11-06 22:36:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 477 transitions. [2021-11-06 22:36:57,046 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 477 transitions. Word has length 79 [2021-11-06 22:36:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:57,046 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 477 transitions. [2021-11-06 22:36:57,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:57,046 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 477 transitions. [2021-11-06 22:36:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 22:36:57,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:57,047 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:57,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-06 22:36:57,263 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 [2021-11-06 22:36:57,263 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:57,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1201768388, now seen corresponding path program 1 times [2021-11-06 22:36:57,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:57,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169889870] [2021-11-06 22:36:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:57,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:57,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:57,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402765918] [2021-11-06 22:36:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:57,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:57,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:57,279 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) [2021-11-06 22:36:57,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 22:36:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:57,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-06 22:36:57,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:57,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:57,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169889870] [2021-11-06 22:36:57,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:57,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402765918] [2021-11-06 22:36:57,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402765918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:36:57,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:36:57,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 22:36:57,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492012989] [2021-11-06 22:36:57,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 22:36:57,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:57,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 22:36:57,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:36:57,817 INFO L87 Difference]: Start difference. First operand 387 states and 477 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:57,873 INFO L93 Difference]: Finished difference Result 723 states and 899 transitions. [2021-11-06 22:36:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 22:36:57,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-06 22:36:57,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:57,875 INFO L225 Difference]: With dead ends: 723 [2021-11-06 22:36:57,875 INFO L226 Difference]: Without dead ends: 388 [2021-11-06 22:36:57,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 22:36:57,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-06 22:36:57,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2021-11-06 22:36:57,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 378 states have (on average 1.2645502645502646) internal successors, (478), 387 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:57,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 478 transitions. [2021-11-06 22:36:57,885 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 478 transitions. Word has length 81 [2021-11-06 22:36:57,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:57,885 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 478 transitions. [2021-11-06 22:36:57,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:57,885 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 478 transitions. [2021-11-06 22:36:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 22:36:57,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:57,889 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:57,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:58,104 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 [2021-11-06 22:36:58,104 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:58,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash -169971840, now seen corresponding path program 1 times [2021-11-06 22:36:58,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:58,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661350870] [2021-11-06 22:36:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:58,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:58,123 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:58,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374528635] [2021-11-06 22:36:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:58,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:58,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:58,132 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) [2021-11-06 22:36:58,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 22:36:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:58,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-06 22:36:58,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 22:36:58,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:58,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661350870] [2021-11-06 22:36:58,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:58,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374528635] [2021-11-06 22:36:58,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374528635] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:58,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:58,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-06 22:36:58,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668291344] [2021-11-06 22:36:58,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 22:36:58,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:58,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 22:36:58,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 22:36:58,690 INFO L87 Difference]: Start difference. First operand 388 states and 478 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:36:59,017 INFO L93 Difference]: Finished difference Result 725 states and 901 transitions. [2021-11-06 22:36:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 22:36:59,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 22:36:59,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:36:59,019 INFO L225 Difference]: With dead ends: 725 [2021-11-06 22:36:59,019 INFO L226 Difference]: Without dead ends: 389 [2021-11-06 22:36:59,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-06 22:36:59,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-06 22:36:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2021-11-06 22:36:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 379 states have (on average 1.2638522427440633) internal successors, (479), 388 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 479 transitions. [2021-11-06 22:36:59,028 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 479 transitions. Word has length 82 [2021-11-06 22:36:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:36:59,029 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 479 transitions. [2021-11-06 22:36:59,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:36:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 479 transitions. [2021-11-06 22:36:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 22:36:59,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:36:59,030 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:36:59,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 22:36:59,255 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 [2021-11-06 22:36:59,255 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:36:59,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:36:59,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1914773501, now seen corresponding path program 1 times [2021-11-06 22:36:59,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:36:59,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072669077] [2021-11-06 22:36:59,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:59,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:36:59,273 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:36:59,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762118717] [2021-11-06 22:36:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:36:59,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:36:59,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:36:59,275 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) [2021-11-06 22:36:59,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 22:36:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:36:59,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-06 22:36:59,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:36:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 22:36:59,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:36:59,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072669077] [2021-11-06 22:36:59,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:36:59,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762118717] [2021-11-06 22:36:59,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762118717] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 22:36:59,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 22:36:59,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-06 22:36:59,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113143206] [2021-11-06 22:36:59,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 22:36:59,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:36:59,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 22:36:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 22:36:59,900 INFO L87 Difference]: Start difference. First operand 389 states and 479 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2021-11-06 22:37:00,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:00,289 INFO L93 Difference]: Finished difference Result 727 states and 903 transitions. [2021-11-06 22:37:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 22:37:00,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 22:37:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:00,291 INFO L225 Difference]: With dead ends: 727 [2021-11-06 22:37:00,291 INFO L226 Difference]: Without dead ends: 390 [2021-11-06 22:37:00,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-06 22:37:00,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-06 22:37:00,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2021-11-06 22:37:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 380 states have (on average 1.263157894736842) internal successors, (480), 389 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 22:37:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 480 transitions. [2021-11-06 22:37:00,300 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 480 transitions. Word has length 83 [2021-11-06 22:37:00,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:00,301 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 480 transitions. [2021-11-06 22:37:00,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2021-11-06 22:37:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 480 transitions. [2021-11-06 22:37:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 22:37:00,301 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:00,302 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:37:00,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 22:37:00,522 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 [2021-11-06 22:37:00,523 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 22:37:00,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:00,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1602172737, now seen corresponding path program 2 times [2021-11-06 22:37:00,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:37:00,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266231081] [2021-11-06 22:37:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:00,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:37:00,533 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:37:00,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128855435] [2021-11-06 22:37:00,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:37:00,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:37:00,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:37:00,535 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) [2021-11-06 22:37:00,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process Killed by 15