./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:28:05,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:28:05,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:28:05,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:28:05,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:28:05,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:28:05,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:28:05,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:28:05,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:28:05,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:28:05,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:28:05,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:28:05,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:28:05,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:28:05,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:28:05,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:28:05,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:28:05,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:28:05,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:28:05,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:28:05,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:28:05,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:28:05,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:28:05,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:28:05,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:28:05,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:28:05,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:28:05,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:28:05,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:28:05,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:28:05,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:28:05,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:28:05,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:28:05,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:28:05,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:28:05,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:28:05,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:28:05,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:28:05,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:28:05,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:28:05,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:28:05,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:28:05,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:28:05,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:28:05,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:28:05,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:28:05,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:28:05,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:28:05,217 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:28:05,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:28:05,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:28:05,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:28:05,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:28:05,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:28:05,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:28:05,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:28:05,218 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:28:05,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:28:05,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:28:05,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:28:05,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:28:05,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:28:05,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:28:05,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:28:05,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:28:05,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:28:05,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:28:05,220 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:28:05,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:28:05,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:28:05,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:28:05,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc [2021-11-06 14:28:05,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:28:05,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:28:05,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:28:05,449 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:28:05,450 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:28:05,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-06 14:28:05,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3a243b5/12cc1d1ff0f94c0eb1961f6908137c91/FLAGded7ecde0 [2021-11-06 14:28:06,168 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:28:06,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-06 14:28:06,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3a243b5/12cc1d1ff0f94c0eb1961f6908137c91/FLAGded7ecde0 [2021-11-06 14:28:06,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3a243b5/12cc1d1ff0f94c0eb1961f6908137c91 [2021-11-06 14:28:06,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:28:06,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:28:06,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:28:06,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:28:06,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:28:06,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:28:06" (1/1) ... [2021-11-06 14:28:06,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b05ebb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:06, skipping insertion in model container [2021-11-06 14:28:06,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:28:06" (1/1) ... [2021-11-06 14:28:06,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:28:06,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:28:07,090 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/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-06 14:28:07,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:28:07,570 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:28:07,672 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/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2021-11-06 14:28:07,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:28:07,861 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:28:07,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07 WrapperNode [2021-11-06 14:28:07,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:28:07,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:28:07,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:28:07,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:28:07,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07" (1/1) ... [2021-11-06 14:28:07,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07" (1/1) ... [2021-11-06 14:28:08,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:28:08,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:28:08,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:28:08,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:28:08,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07" (1/1) ... [2021-11-06 14:28:08,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07" (1/1) ... [2021-11-06 14:28:08,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07" (1/1) ... [2021-11-06 14:28:08,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07" (1/1) ... [2021-11-06 14:28:08,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07" (1/1) ... [2021-11-06 14:28:08,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07" (1/1) ... [2021-11-06 14:28:08,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07" (1/1) ... [2021-11-06 14:28:08,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:28:08,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:28:08,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:28:08,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:28:08,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07" (1/1) ... [2021-11-06 14:28:08,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:28:08,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:28:08,785 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 14:28:08,800 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 14:28:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:28:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:28:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:28:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:28:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:28:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:28:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:28:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:28:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:28:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:28:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:28:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:28:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:28:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 14:28:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 14:28:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_open [2021-11-06 14:28:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_open [2021-11-06 14:28:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:28:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_close [2021-11-06 14:28:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_close [2021-11-06 14:28:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:28:08,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:28:24,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:28:24,340 INFO L299 CfgBuilder]: Removed 2489 assume(true) statements. [2021-11-06 14:28:24,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:28:24 BoogieIcfgContainer [2021-11-06 14:28:24,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:28:24,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:28:24,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:28:24,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:28:24,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:28:06" (1/3) ... [2021-11-06 14:28:24,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d9e5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:28:24, skipping insertion in model container [2021-11-06 14:28:24,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:28:07" (2/3) ... [2021-11-06 14:28:24,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d9e5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:28:24, skipping insertion in model container [2021-11-06 14:28:24,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:28:24" (3/3) ... [2021-11-06 14:28:24,352 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2021-11-06 14:28:24,356 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:28:24,356 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-06 14:28:24,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:28:24,410 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 14:28:24,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-06 14:28:24,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 2940 states, 2927 states have (on average 1.490946361462248) internal successors, (4364), 2928 states have internal predecessors, (4364), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-06 14:28:24,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 14:28:24,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:24,462 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] [2021-11-06 14:28:24,463 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:28:24,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:24,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1824939026, now seen corresponding path program 1 times [2021-11-06 14:28:24,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:24,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162135507] [2021-11-06 14:28:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:24,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:24,956 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 14:28:24,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:24,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162135507] [2021-11-06 14:28:24,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162135507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:28:24,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:28:24,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:28:24,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833114168] [2021-11-06 14:28:24,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:28:24,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:24,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:28:24,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:28:24,982 INFO L87 Difference]: Start difference. First operand has 2940 states, 2927 states have (on average 1.490946361462248) internal successors, (4364), 2928 states have internal predecessors, (4364), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 14:28:27,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:27,350 INFO L93 Difference]: Finished difference Result 8754 states and 13070 transitions. [2021-11-06 14:28:27,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:28:27,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-06 14:28:27,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:27,388 INFO L225 Difference]: With dead ends: 8754 [2021-11-06 14:28:27,388 INFO L226 Difference]: Without dead ends: 5807 [2021-11-06 14:28:27,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:28:27,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2021-11-06 14:28:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5807. [2021-11-06 14:28:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5807 states, 5784 states have (on average 1.4043914246196403) internal successors, (8123), 5784 states have internal predecessors, (8123), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-06 14:28:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5807 states to 5807 states and 8155 transitions. [2021-11-06 14:28:27,597 INFO L78 Accepts]: Start accepts. Automaton has 5807 states and 8155 transitions. Word has length 23 [2021-11-06 14:28:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:27,597 INFO L470 AbstractCegarLoop]: Abstraction has 5807 states and 8155 transitions. [2021-11-06 14:28:27,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 14:28:27,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5807 states and 8155 transitions. [2021-11-06 14:28:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-06 14:28:27,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:27,603 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] [2021-11-06 14:28:27,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:28:27,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:28:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:27,606 INFO L85 PathProgramCache]: Analyzing trace with hash 666202280, now seen corresponding path program 1 times [2021-11-06 14:28:27,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:27,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788367282] [2021-11-06 14:28:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:27,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:27,802 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 14:28:27,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:27,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788367282] [2021-11-06 14:28:27,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788367282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:28:27,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:28:27,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:28:27,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496479503] [2021-11-06 14:28:27,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:28:27,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:27,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:28:27,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:28:27,805 INFO L87 Difference]: Start difference. First operand 5807 states and 8155 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 14:28:28,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:28,844 INFO L93 Difference]: Finished difference Result 17383 states and 24454 transitions. [2021-11-06 14:28:28,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:28:28,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2021-11-06 14:28:28,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:28,886 INFO L225 Difference]: With dead ends: 17383 [2021-11-06 14:28:28,887 INFO L226 Difference]: Without dead ends: 11586 [2021-11-06 14:28:28,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 14:28:28,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2021-11-06 14:28:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11290. [2021-11-06 14:28:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11290 states, 11245 states have (on average 1.4038239217429969) internal successors, (15786), 11245 states have internal predecessors, (15786), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 14:28:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11290 states to 11290 states and 15866 transitions. [2021-11-06 14:28:29,144 INFO L78 Accepts]: Start accepts. Automaton has 11290 states and 15866 transitions. Word has length 25 [2021-11-06 14:28:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:29,146 INFO L470 AbstractCegarLoop]: Abstraction has 11290 states and 15866 transitions. [2021-11-06 14:28:29,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 14:28:29,147 INFO L276 IsEmpty]: Start isEmpty. Operand 11290 states and 15866 transitions. [2021-11-06 14:28:29,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 14:28:29,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:29,160 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:28:29,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:28:29,161 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:28:29,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:29,167 INFO L85 PathProgramCache]: Analyzing trace with hash 555830267, now seen corresponding path program 1 times [2021-11-06 14:28:29,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:29,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546497348] [2021-11-06 14:28:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:29,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:28:29,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:29,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546497348] [2021-11-06 14:28:29,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546497348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:28:29,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:28:29,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:28:29,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588409185] [2021-11-06 14:28:29,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:28:29,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:28:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:28:29,360 INFO L87 Difference]: Start difference. First operand 11290 states and 15866 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 14:28:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:30,321 INFO L93 Difference]: Finished difference Result 44194 states and 62512 transitions. [2021-11-06 14:28:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:28:30,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-06 14:28:30,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:30,417 INFO L225 Difference]: With dead ends: 44194 [2021-11-06 14:28:30,418 INFO L226 Difference]: Without dead ends: 32922 [2021-11-06 14:28:30,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:28:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32922 states. [2021-11-06 14:28:30,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32922 to 11458. [2021-11-06 14:28:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11458 states, 11413 states have (on average 1.3978796109699465) internal successors, (15954), 11413 states have internal predecessors, (15954), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 14:28:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11458 states to 11458 states and 16034 transitions. [2021-11-06 14:28:30,823 INFO L78 Accepts]: Start accepts. Automaton has 11458 states and 16034 transitions. Word has length 66 [2021-11-06 14:28:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:30,823 INFO L470 AbstractCegarLoop]: Abstraction has 11458 states and 16034 transitions. [2021-11-06 14:28:30,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 14:28:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 11458 states and 16034 transitions. [2021-11-06 14:28:30,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 14:28:30,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:30,831 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:28:30,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:28:30,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:28:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:30,832 INFO L85 PathProgramCache]: Analyzing trace with hash -196678620, now seen corresponding path program 1 times [2021-11-06 14:28:30,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:30,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389470070] [2021-11-06 14:28:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:30,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:28:31,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:31,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389470070] [2021-11-06 14:28:31,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389470070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:28:31,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:28:31,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:28:31,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725595594] [2021-11-06 14:28:31,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:28:31,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:31,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:28:31,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:28:31,049 INFO L87 Difference]: Start difference. First operand 11458 states and 16034 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:31,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:31,258 INFO L93 Difference]: Finished difference Result 22958 states and 32127 transitions. [2021-11-06 14:28:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:28:31,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 14:28:31,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:31,286 INFO L225 Difference]: With dead ends: 22958 [2021-11-06 14:28:31,286 INFO L226 Difference]: Without dead ends: 11518 [2021-11-06 14:28:31,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 14:28:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11518 states. [2021-11-06 14:28:31,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11518 to 11478. [2021-11-06 14:28:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11478 states, 11433 states have (on average 1.3971835913583486) internal successors, (15974), 11433 states have internal predecessors, (15974), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 14:28:31,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11478 states to 11478 states and 16054 transitions. [2021-11-06 14:28:31,519 INFO L78 Accepts]: Start accepts. Automaton has 11478 states and 16054 transitions. Word has length 69 [2021-11-06 14:28:31,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:31,520 INFO L470 AbstractCegarLoop]: Abstraction has 11478 states and 16054 transitions. [2021-11-06 14:28:31,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:31,521 INFO L276 IsEmpty]: Start isEmpty. Operand 11478 states and 16054 transitions. [2021-11-06 14:28:31,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 14:28:31,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:31,528 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:28:31,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:28:31,529 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:28:31,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:31,529 INFO L85 PathProgramCache]: Analyzing trace with hash 660079663, now seen corresponding path program 1 times [2021-11-06 14:28:31,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:31,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598297259] [2021-11-06 14:28:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:31,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:28:31,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:31,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598297259] [2021-11-06 14:28:31,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598297259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:28:31,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:28:31,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:28:31,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811959421] [2021-11-06 14:28:31,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:28:31,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:31,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:28:31,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:28:31,687 INFO L87 Difference]: Start difference. First operand 11478 states and 16054 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:32,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:32,690 INFO L93 Difference]: Finished difference Result 44898 states and 62958 transitions. [2021-11-06 14:28:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:28:32,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 14:28:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:32,786 INFO L225 Difference]: With dead ends: 44898 [2021-11-06 14:28:32,787 INFO L226 Difference]: Without dead ends: 33438 [2021-11-06 14:28:32,825 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:28:32,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33438 states. [2021-11-06 14:28:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33438 to 11510. [2021-11-06 14:28:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11510 states, 11465 states have (on average 1.3960750109027475) internal successors, (16006), 11465 states have internal predecessors, (16006), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 14:28:33,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11510 states to 11510 states and 16086 transitions. [2021-11-06 14:28:33,291 INFO L78 Accepts]: Start accepts. Automaton has 11510 states and 16086 transitions. Word has length 69 [2021-11-06 14:28:33,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:33,292 INFO L470 AbstractCegarLoop]: Abstraction has 11510 states and 16086 transitions. [2021-11-06 14:28:33,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:33,292 INFO L276 IsEmpty]: Start isEmpty. Operand 11510 states and 16086 transitions. [2021-11-06 14:28:33,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 14:28:33,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:33,304 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:28:33,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:28:33,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:28:33,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash -436548035, now seen corresponding path program 1 times [2021-11-06 14:28:33,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:33,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623648696] [2021-11-06 14:28:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:33,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:28:33,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:33,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623648696] [2021-11-06 14:28:33,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623648696] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:33,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566853197] [2021-11-06 14:28:33,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:33,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:28:33,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:28:33,560 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 14:28:33,562 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 14:28:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:34,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 14:28:34,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:28:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 14:28:34,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566853197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:28:34,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:28:34,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 14:28:34,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995940490] [2021-11-06 14:28:34,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:28:34,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:28:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:28:34,720 INFO L87 Difference]: Start difference. First operand 11510 states and 16086 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 14:28:35,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:35,348 INFO L93 Difference]: Finished difference Result 31898 states and 44652 transitions. [2021-11-06 14:28:35,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:28:35,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 14:28:35,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:35,397 INFO L225 Difference]: With dead ends: 31898 [2021-11-06 14:28:35,397 INFO L226 Difference]: Without dead ends: 20406 [2021-11-06 14:28:35,420 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:28:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20406 states. [2021-11-06 14:28:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20406 to 11526. [2021-11-06 14:28:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11526 states, 11481 states have (on average 1.3955230380628865) internal successors, (16022), 11481 states have internal predecessors, (16022), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 14:28:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11526 states to 11526 states and 16102 transitions. [2021-11-06 14:28:35,731 INFO L78 Accepts]: Start accepts. Automaton has 11526 states and 16102 transitions. Word has length 72 [2021-11-06 14:28:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:35,731 INFO L470 AbstractCegarLoop]: Abstraction has 11526 states and 16102 transitions. [2021-11-06 14:28:35,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 14:28:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 11526 states and 16102 transitions. [2021-11-06 14:28:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 14:28:35,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:35,742 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:28:35,796 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 14:28:35,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-06 14:28:35,955 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:28:35,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:35,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1725726798, now seen corresponding path program 1 times [2021-11-06 14:28:35,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:35,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584028445] [2021-11-06 14:28:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:35,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:28:36,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:36,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584028445] [2021-11-06 14:28:36,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584028445] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:36,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574633798] [2021-11-06 14:28:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:36,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:28:36,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:28:36,138 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 14:28:36,139 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 14:28:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:37,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:28:37,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:28:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:28:37,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574633798] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:37,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:28:37,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:28:37,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720610395] [2021-11-06 14:28:37,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:28:37,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:37,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:28:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:28:37,363 INFO L87 Difference]: Start difference. First operand 11526 states and 16102 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 14:28:37,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:37,691 INFO L93 Difference]: Finished difference Result 23134 states and 32303 transitions. [2021-11-06 14:28:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:28:37,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 75 [2021-11-06 14:28:37,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:37,713 INFO L225 Difference]: With dead ends: 23134 [2021-11-06 14:28:37,714 INFO L226 Difference]: Without dead ends: 11626 [2021-11-06 14:28:37,728 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 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 14:28:37,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11626 states. [2021-11-06 14:28:38,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11626 to 11586. [2021-11-06 14:28:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11586 states, 11541 states have (on average 1.3934667706437918) internal successors, (16082), 11541 states have internal predecessors, (16082), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 14:28:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11586 states to 11586 states and 16162 transitions. [2021-11-06 14:28:38,085 INFO L78 Accepts]: Start accepts. Automaton has 11586 states and 16162 transitions. Word has length 75 [2021-11-06 14:28:38,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:38,086 INFO L470 AbstractCegarLoop]: Abstraction has 11586 states and 16162 transitions. [2021-11-06 14:28:38,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 14:28:38,086 INFO L276 IsEmpty]: Start isEmpty. Operand 11586 states and 16162 transitions. [2021-11-06 14:28:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 14:28:38,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:38,096 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:28:38,120 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 14:28:38,318 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,SelfDestructingSolverStorable6 [2021-11-06 14:28:38,319 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:28:38,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:38,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1409683414, now seen corresponding path program 1 times [2021-11-06 14:28:38,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:38,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387051865] [2021-11-06 14:28:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:38,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:28:38,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:38,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387051865] [2021-11-06 14:28:38,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387051865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:28:38,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:28:38,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:28:38,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859332376] [2021-11-06 14:28:38,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:28:38,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:38,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:28:38,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:28:38,504 INFO L87 Difference]: Start difference. First operand 11586 states and 16162 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 14:28:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:39,009 INFO L93 Difference]: Finished difference Result 31010 states and 43284 transitions. [2021-11-06 14:28:39,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:28:39,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2021-11-06 14:28:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:39,052 INFO L225 Difference]: With dead ends: 31010 [2021-11-06 14:28:39,053 INFO L226 Difference]: Without dead ends: 19442 [2021-11-06 14:28:39,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:28:39,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19442 states. [2021-11-06 14:28:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19442 to 12086. [2021-11-06 14:28:39,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12086 states, 12041 states have (on average 1.3912465742048004) internal successors, (16752), 12041 states have internal predecessors, (16752), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 14:28:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12086 states to 12086 states and 16832 transitions. [2021-11-06 14:28:39,431 INFO L78 Accepts]: Start accepts. Automaton has 12086 states and 16832 transitions. Word has length 77 [2021-11-06 14:28:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:39,432 INFO L470 AbstractCegarLoop]: Abstraction has 12086 states and 16832 transitions. [2021-11-06 14:28:39,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 14:28:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 12086 states and 16832 transitions. [2021-11-06 14:28:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 14:28:39,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:39,443 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:28:39,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:28:39,444 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:28:39,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:39,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1553880309, now seen corresponding path program 2 times [2021-11-06 14:28:39,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:39,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842699287] [2021-11-06 14:28:39,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:39,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:28:39,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:39,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842699287] [2021-11-06 14:28:39,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842699287] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:39,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665697256] [2021-11-06 14:28:39,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:28:39,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:28:39,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:28:39,787 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 14:28:39,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Killed by 15