./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.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 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 08:31:34,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 08:31:34,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 08:31:34,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 08:31:34,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 08:31:34,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 08:31:34,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 08:31:34,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 08:31:34,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 08:31:34,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 08:31:34,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 08:31:34,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 08:31:34,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 08:31:34,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 08:31:34,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 08:31:34,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 08:31:34,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 08:31:34,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 08:31:34,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 08:31:34,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 08:31:34,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 08:31:34,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 08:31:34,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 08:31:34,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 08:31:34,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 08:31:34,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 08:31:34,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 08:31:34,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 08:31:34,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 08:31:34,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 08:31:34,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 08:31:34,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 08:31:34,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 08:31:34,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 08:31:34,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 08:31:34,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 08:31:34,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 08:31:34,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 08:31:34,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 08:31:34,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 08:31:34,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 08:31:34,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 08:31:34,714 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 08:31:34,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 08:31:34,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 08:31:34,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 08:31:34,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 08:31:34,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 08:31:34,717 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 08:31:34,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 08:31:34,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 08:31:34,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 08:31:34,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 08:31:34,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 08:31:34,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 08:31:34,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 08:31:34,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 08:31:34,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 08:31:34,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 08:31:34,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 08:31:34,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 08:31:34,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:31:34,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 08:31:34,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 08:31:34,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 08:31:34,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 08:31:34,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 08:31:34,720 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 08:31:34,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 08:31:34,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 08:31:34,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 08:31:34,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 [2021-11-04 08:31:34,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 08:31:34,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 08:31:34,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 08:31:34,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 08:31:34,907 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 08:31:34,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-04 08:31:34,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb231b32f/a80672e02d264a308950f38066958b34/FLAG33aa37317 [2021-11-04 08:31:35,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 08:31:35,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-04 08:31:35,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb231b32f/a80672e02d264a308950f38066958b34/FLAG33aa37317 [2021-11-04 08:31:35,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb231b32f/a80672e02d264a308950f38066958b34 [2021-11-04 08:31:35,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 08:31:35,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 08:31:35,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 08:31:35,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 08:31:35,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 08:31:35,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:31:35" (1/1) ... [2021-11-04 08:31:35,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6dcd97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:35, skipping insertion in model container [2021-11-04 08:31:35,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:31:35" (1/1) ... [2021-11-04 08:31:36,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 08:31:36,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 08:31:36,722 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2021-11-04 08:31:36,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:31:36,754 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 08:31:36,863 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2021-11-04 08:31:36,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:31:36,931 INFO L208 MainTranslator]: Completed translation [2021-11-04 08:31:36,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36 WrapperNode [2021-11-04 08:31:36,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 08:31:36,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 08:31:36,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 08:31:36,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 08:31:36,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36" (1/1) ... [2021-11-04 08:31:36,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36" (1/1) ... [2021-11-04 08:31:37,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 08:31:37,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 08:31:37,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 08:31:37,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 08:31:37,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36" (1/1) ... [2021-11-04 08:31:37,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36" (1/1) ... [2021-11-04 08:31:37,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36" (1/1) ... [2021-11-04 08:31:37,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36" (1/1) ... [2021-11-04 08:31:37,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36" (1/1) ... [2021-11-04 08:31:37,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36" (1/1) ... [2021-11-04 08:31:37,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36" (1/1) ... [2021-11-04 08:31:37,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 08:31:37,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 08:31:37,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 08:31:37,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 08:31:37,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36" (1/1) ... [2021-11-04 08:31:37,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:31:37,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:31:37,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 08:31:37,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 08:31:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 08:31:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 08:31:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 08:31:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 08:31:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 08:31:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 08:31:37,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 08:31:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 08:31:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 08:31:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 08:31:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 08:31:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 08:31:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 08:31:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 08:31:37,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 08:31:37,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 08:31:38,432 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 08:31:38,432 INFO L299 CfgBuilder]: Removed 938 assume(true) statements. [2021-11-04 08:31:38,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:31:38 BoogieIcfgContainer [2021-11-04 08:31:38,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 08:31:38,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 08:31:38,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 08:31:38,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 08:31:38,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:31:35" (1/3) ... [2021-11-04 08:31:38,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cab1a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:31:38, skipping insertion in model container [2021-11-04 08:31:38,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:31:36" (2/3) ... [2021-11-04 08:31:38,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cab1a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:31:38, skipping insertion in model container [2021-11-04 08:31:38,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:31:38" (3/3) ... [2021-11-04 08:31:38,441 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-04 08:31:38,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 08:31:38,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-04 08:31:38,485 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 08:31:38,491 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 08:31:38,491 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-04 08:31:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 743 states have (on average 1.4010767160161508) internal successors, (1041), 749 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:31:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 08:31:38,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:31:38,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:31:38,537 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:31:38,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:31:38,540 INFO L85 PathProgramCache]: Analyzing trace with hash -453684691, now seen corresponding path program 1 times [2021-11-04 08:31:38,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:31:38,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934088060] [2021-11-04 08:31:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:31:38,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:31:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:31:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:31:38,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:31:38,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934088060] [2021-11-04 08:31:38,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934088060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:31:38,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:31:38,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:31:38,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652204543] [2021-11-04 08:31:38,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:31:38,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:31:38,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:31:38,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:31:38,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:31:38,932 INFO L87 Difference]: Start difference. First operand has 750 states, 743 states have (on average 1.4010767160161508) internal successors, (1041), 749 states have internal predecessors, (1041), 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 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:31:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:31:43,366 INFO L93 Difference]: Finished difference Result 1498 states and 2081 transitions. [2021-11-04 08:31:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:31:43,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-04 08:31:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:31:43,383 INFO L225 Difference]: With dead ends: 1498 [2021-11-04 08:31:43,386 INFO L226 Difference]: Without dead ends: 740 [2021-11-04 08:31:43,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:31:43,397 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4007.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.57ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4346.24ms IncrementalHoareTripleChecker+Time [2021-11-04 08:31:43,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 2040 Unknown, 0 Unchecked, 8.57ms Time], IncrementalHoareTripleChecker [2 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 4346.24ms Time] [2021-11-04 08:31:43,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-11-04 08:31:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2021-11-04 08:31:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 734 states have (on average 1.3732970027247957) internal successors, (1008), 739 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:31:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1008 transitions. [2021-11-04 08:31:43,475 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1008 transitions. Word has length 74 [2021-11-04 08:31:43,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:31:43,476 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 1008 transitions. [2021-11-04 08:31:43,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:31:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1008 transitions. [2021-11-04 08:31:43,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-04 08:31:43,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:31:43,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:31:43,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 08:31:43,479 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:31:43,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:31:43,480 INFO L85 PathProgramCache]: Analyzing trace with hash -815027303, now seen corresponding path program 1 times [2021-11-04 08:31:43,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:31:43,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977742227] [2021-11-04 08:31:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:31:43,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:31:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:31:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 08:31:43,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:31:43,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977742227] [2021-11-04 08:31:43,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977742227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:31:43,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:31:43,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:31:43,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350235976] [2021-11-04 08:31:43,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:31:43,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:31:43,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:31:43,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:31:43,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:31:43,598 INFO L87 Difference]: Start difference. First operand 740 states and 1008 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) [2021-11-04 08:31:47,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:31:47,592 INFO L93 Difference]: Finished difference Result 1475 states and 2012 transitions. [2021-11-04 08:31:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:31:47,592 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 [2021-11-04 08:31:47,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:31:47,595 INFO L225 Difference]: With dead ends: 1475 [2021-11-04 08:31:47,595 INFO L226 Difference]: Without dead ends: 743 [2021-11-04 08:31:47,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:31:47,597 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3655.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.26ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3953.05ms IncrementalHoareTripleChecker+Time [2021-11-04 08:31:47,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2013 Unknown, 0 Unchecked, 4.26ms Time], IncrementalHoareTripleChecker [4 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 3953.05ms Time] [2021-11-04 08:31:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-11-04 08:31:47,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 743. [2021-11-04 08:31:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 737 states have (on average 1.3717774762550883) internal successors, (1011), 742 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:31:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1011 transitions. [2021-11-04 08:31:47,609 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1011 transitions. Word has length 77 [2021-11-04 08:31:47,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:31:47,609 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 1011 transitions. [2021-11-04 08:31:47,610 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) [2021-11-04 08:31:47,610 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1011 transitions. [2021-11-04 08:31:47,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-04 08:31:47,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:31:47,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:31:47,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 08:31:47,612 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:31:47,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:31:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1183813309, now seen corresponding path program 1 times [2021-11-04 08:31:47,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:31:47,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78699872] [2021-11-04 08:31:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:31:47,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:31:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:31:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-04 08:31:47,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:31:47,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78699872] [2021-11-04 08:31:47,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78699872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:31:47,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:31:47,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:31:47,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587390642] [2021-11-04 08:31:47,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:31:47,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:31:47,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:31:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:31:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:31:47,692 INFO L87 Difference]: Start difference. First operand 743 states and 1011 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:31:51,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:31:51,989 INFO L93 Difference]: Finished difference Result 1484 states and 2026 transitions. [2021-11-04 08:31:51,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:31:51,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2021-11-04 08:31:51,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:31:51,992 INFO L225 Difference]: With dead ends: 1484 [2021-11-04 08:31:51,992 INFO L226 Difference]: Without dead ends: 764 [2021-11-04 08:31:51,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:31:51,998 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3967.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.73ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4249.36ms IncrementalHoareTripleChecker+Time [2021-11-04 08:31:51,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 1990 Unknown, 0 Unchecked, 3.73ms Time], IncrementalHoareTripleChecker [2 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 4249.36ms Time] [2021-11-04 08:31:52,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-04 08:31:52,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 761. [2021-11-04 08:31:52,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 755 states have (on average 1.3748344370860928) internal successors, (1038), 760 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:31:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1038 transitions. [2021-11-04 08:31:52,012 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1038 transitions. Word has length 80 [2021-11-04 08:31:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:31:52,013 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 1038 transitions. [2021-11-04 08:31:52,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:31:52,014 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1038 transitions. [2021-11-04 08:31:52,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 08:31:52,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:31:52,016 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:31:52,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 08:31:52,016 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:31:52,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:31:52,017 INFO L85 PathProgramCache]: Analyzing trace with hash -889736699, now seen corresponding path program 1 times [2021-11-04 08:31:52,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:31:52,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718240672] [2021-11-04 08:31:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:31:52,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:31:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:31:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-04 08:31:52,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:31:52,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718240672] [2021-11-04 08:31:52,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718240672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:31:52,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:31:52,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:31:52,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903974661] [2021-11-04 08:31:52,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:31:52,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:31:52,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:31:52,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:31:52,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:31:52,125 INFO L87 Difference]: Start difference. First operand 761 states and 1038 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:31:55,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:31:55,471 INFO L93 Difference]: Finished difference Result 1532 states and 2102 transitions. [2021-11-04 08:31:55,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:31:55,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-04 08:31:55,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:31:55,474 INFO L225 Difference]: With dead ends: 1532 [2021-11-04 08:31:55,474 INFO L226 Difference]: Without dead ends: 794 [2021-11-04 08:31:55,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:31:55,476 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3003.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3294.53ms IncrementalHoareTripleChecker+Time [2021-11-04 08:31:55,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 2018 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [7 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 3294.53ms Time] [2021-11-04 08:31:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-11-04 08:31:55,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 791. [2021-11-04 08:31:55,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 785 states have (on average 1.378343949044586) internal successors, (1082), 790 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:31:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1082 transitions. [2021-11-04 08:31:55,488 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1082 transitions. Word has length 106 [2021-11-04 08:31:55,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:31:55,488 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1082 transitions. [2021-11-04 08:31:55,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:31:55,489 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1082 transitions. [2021-11-04 08:31:55,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-04 08:31:55,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:31:55,490 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:31:55,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 08:31:55,490 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:31:55,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:31:55,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1913772113, now seen corresponding path program 1 times [2021-11-04 08:31:55,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:31:55,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052413773] [2021-11-04 08:31:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:31:55,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:31:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:31:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-04 08:31:55,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:31:55,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052413773] [2021-11-04 08:31:55,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052413773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:31:55,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:31:55,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:31:55,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349735939] [2021-11-04 08:31:55,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:31:55,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:31:55,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:31:55,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:31:55,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:31:55,585 INFO L87 Difference]: Start difference. First operand 791 states and 1082 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:32:00,810 INFO L93 Difference]: Finished difference Result 2325 states and 3187 transitions. [2021-11-04 08:32:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:32:00,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 120 [2021-11-04 08:32:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:32:00,840 INFO L225 Difference]: With dead ends: 2325 [2021-11-04 08:32:00,840 INFO L226 Difference]: Without dead ends: 1557 [2021-11-04 08:32:00,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:32:00,843 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 978 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4766.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5156.27ms IncrementalHoareTripleChecker+Time [2021-11-04 08:32:00,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 0 Invalid, 2082 Unknown, 0 Unchecked, 3.63ms Time], IncrementalHoareTripleChecker [1 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 5156.27ms Time] [2021-11-04 08:32:00,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2021-11-04 08:32:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 792. [2021-11-04 08:32:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 786 states have (on average 1.3778625954198473) internal successors, (1083), 791 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1083 transitions. [2021-11-04 08:32:00,878 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1083 transitions. Word has length 120 [2021-11-04 08:32:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:32:00,881 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1083 transitions. [2021-11-04 08:32:00,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1083 transitions. [2021-11-04 08:32:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-04 08:32:00,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:32:00,891 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:32:00,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 08:32:00,892 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:32:00,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:32:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1711948179, now seen corresponding path program 1 times [2021-11-04 08:32:00,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:32:00,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989493822] [2021-11-04 08:32:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:32:00,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:32:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:32:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 08:32:01,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:32:01,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989493822] [2021-11-04 08:32:01,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989493822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:32:01,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:32:01,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:32:01,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780718521] [2021-11-04 08:32:01,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:32:01,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:32:01,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:32:01,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:32:01,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:32:01,040 INFO L87 Difference]: Start difference. First operand 792 states and 1083 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:04,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:32:04,643 INFO L93 Difference]: Finished difference Result 1563 states and 2142 transitions. [2021-11-04 08:32:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:32:04,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 120 [2021-11-04 08:32:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:32:04,646 INFO L225 Difference]: With dead ends: 1563 [2021-11-04 08:32:04,646 INFO L226 Difference]: Without dead ends: 794 [2021-11-04 08:32:04,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:32:04,647 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3289.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.57ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3565.12ms IncrementalHoareTripleChecker+Time [2021-11-04 08:32:04,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2012 Unknown, 0 Unchecked, 2.57ms Time], IncrementalHoareTripleChecker [2 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 3565.12ms Time] [2021-11-04 08:32:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-11-04 08:32:04,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2021-11-04 08:32:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 788 states have (on average 1.3769035532994924) internal successors, (1085), 793 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1085 transitions. [2021-11-04 08:32:04,660 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1085 transitions. Word has length 120 [2021-11-04 08:32:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:32:04,661 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1085 transitions. [2021-11-04 08:32:04,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1085 transitions. [2021-11-04 08:32:04,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-04 08:32:04,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:32:04,662 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:32:04,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 08:32:04,663 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:32:04,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:32:04,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2104975189, now seen corresponding path program 1 times [2021-11-04 08:32:04,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:32:04,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181452145] [2021-11-04 08:32:04,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:32:04,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:32:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:32:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 08:32:04,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:32:04,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181452145] [2021-11-04 08:32:04,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181452145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:32:04,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:32:04,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:32:04,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287680007] [2021-11-04 08:32:04,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:32:04,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:32:04,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:32:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:32:04,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:32:04,779 INFO L87 Difference]: Start difference. First operand 794 states and 1085 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:09,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:32:09,806 INFO L93 Difference]: Finished difference Result 2252 states and 3097 transitions. [2021-11-04 08:32:09,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:32:09,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 120 [2021-11-04 08:32:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:32:09,811 INFO L225 Difference]: With dead ends: 2252 [2021-11-04 08:32:09,811 INFO L226 Difference]: Without dead ends: 1481 [2021-11-04 08:32:09,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:32:09,813 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 863 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4547.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.70ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4965.97ms IncrementalHoareTripleChecker+Time [2021-11-04 08:32:09,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 0 Invalid, 2807 Unknown, 0 Unchecked, 3.70ms Time], IncrementalHoareTripleChecker [10 Valid, 2797 Invalid, 0 Unknown, 0 Unchecked, 4965.97ms Time] [2021-11-04 08:32:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2021-11-04 08:32:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 800. [2021-11-04 08:32:09,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 794 states have (on average 1.3740554156171285) internal successors, (1091), 799 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1091 transitions. [2021-11-04 08:32:09,830 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1091 transitions. Word has length 120 [2021-11-04 08:32:09,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:32:09,830 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 1091 transitions. [2021-11-04 08:32:09,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1091 transitions. [2021-11-04 08:32:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-04 08:32:09,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:32:09,832 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:32:09,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 08:32:09,832 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:32:09,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:32:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1926118258, now seen corresponding path program 1 times [2021-11-04 08:32:09,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:32:09,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526758473] [2021-11-04 08:32:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:32:09,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:32:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:32:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-04 08:32:09,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:32:09,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526758473] [2021-11-04 08:32:09,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526758473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:32:09,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:32:09,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:32:09,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388687820] [2021-11-04 08:32:09,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:32:09,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:32:09,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:32:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:32:09,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:32:09,939 INFO L87 Difference]: Start difference. First operand 800 states and 1091 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:32:15,069 INFO L93 Difference]: Finished difference Result 2234 states and 3079 transitions. [2021-11-04 08:32:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:32:15,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 124 [2021-11-04 08:32:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:32:15,075 INFO L225 Difference]: With dead ends: 2234 [2021-11-04 08:32:15,075 INFO L226 Difference]: Without dead ends: 1457 [2021-11-04 08:32:15,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:32:15,077 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 822 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4638.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.48ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5064.05ms IncrementalHoareTripleChecker+Time [2021-11-04 08:32:15,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 0 Invalid, 2775 Unknown, 0 Unchecked, 3.48ms Time], IncrementalHoareTripleChecker [22 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 5064.05ms Time] [2021-11-04 08:32:15,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-04 08:32:15,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 836. [2021-11-04 08:32:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 830 states have (on average 1.372289156626506) internal successors, (1139), 835 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:15,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1139 transitions. [2021-11-04 08:32:15,104 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1139 transitions. Word has length 124 [2021-11-04 08:32:15,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:32:15,104 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1139 transitions. [2021-11-04 08:32:15,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:15,104 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1139 transitions. [2021-11-04 08:32:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-04 08:32:15,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:32:15,106 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:32:15,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 08:32:15,107 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:32:15,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:32:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1596165038, now seen corresponding path program 1 times [2021-11-04 08:32:15,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:32:15,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160698195] [2021-11-04 08:32:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:32:15,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:32:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:32:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 08:32:15,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:32:15,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160698195] [2021-11-04 08:32:15,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160698195] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:32:15,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522412765] [2021-11-04 08:32:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:32:15,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:32:15,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:32:15,206 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:32:15,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 08:32:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:32:15,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 08:32:15,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:32:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 08:32:15,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 08:32:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 08:32:16,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522412765] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 08:32:16,162 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 08:32:16,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-04 08:32:16,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586799238] [2021-11-04 08:32:16,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 08:32:16,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 08:32:16,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:32:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 08:32:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-04 08:32:16,163 INFO L87 Difference]: Start difference. First operand 836 states and 1139 transitions. Second operand has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:32:32,858 INFO L93 Difference]: Finished difference Result 3134 states and 4338 transitions. [2021-11-04 08:32:32,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-04 08:32:32,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 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 129 [2021-11-04 08:32:32,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:32:32,865 INFO L225 Difference]: With dead ends: 3134 [2021-11-04 08:32:32,865 INFO L226 Difference]: Without dead ends: 2303 [2021-11-04 08:32:32,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 74.27ms TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2021-11-04 08:32:32,867 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1720 mSDsluCounter, 7761 mSDsCounter, 0 mSdLazyCounter, 9795 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15306.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.14ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 9795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16517.92ms IncrementalHoareTripleChecker+Time [2021-11-04 08:32:32,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1720 Valid, 0 Invalid, 9915 Unknown, 0 Unchecked, 17.14ms Time], IncrementalHoareTripleChecker [120 Valid, 9795 Invalid, 0 Unknown, 0 Unchecked, 16517.92ms Time] [2021-11-04 08:32:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2021-11-04 08:32:32,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 933. [2021-11-04 08:32:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 927 states have (on average 1.3462783171521036) internal successors, (1248), 932 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1248 transitions. [2021-11-04 08:32:32,886 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1248 transitions. Word has length 129 [2021-11-04 08:32:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:32:32,887 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1248 transitions. [2021-11-04 08:32:32,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1248 transitions. [2021-11-04 08:32:32,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-04 08:32:32,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:32:32,889 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:32:32,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 08:32:33,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:32:33,108 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:32:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:32:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash -987320171, now seen corresponding path program 1 times [2021-11-04 08:32:33,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:32:33,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910641432] [2021-11-04 08:32:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:32:33,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:32:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:32:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-04 08:32:33,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:32:33,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910641432] [2021-11-04 08:32:33,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910641432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:32:33,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:32:33,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 08:32:33,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738308530] [2021-11-04 08:32:33,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:32:33,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:32:33,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:32:33,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:32:33,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:32:33,227 INFO L87 Difference]: Start difference. First operand 933 states and 1248 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:38,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:32:38,021 INFO L93 Difference]: Finished difference Result 1975 states and 2666 transitions. [2021-11-04 08:32:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 08:32:38,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 148 [2021-11-04 08:32:38,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:32:38,024 INFO L225 Difference]: With dead ends: 1975 [2021-11-04 08:32:38,024 INFO L226 Difference]: Without dead ends: 1080 [2021-11-04 08:32:38,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:32:38,026 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 3288 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4322.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.73ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4748.38ms IncrementalHoareTripleChecker+Time [2021-11-04 08:32:38,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 3293 Unknown, 0 Unchecked, 3.73ms Time], IncrementalHoareTripleChecker [5 Valid, 3288 Invalid, 0 Unknown, 0 Unchecked, 4748.38ms Time] [2021-11-04 08:32:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2021-11-04 08:32:38,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 937. [2021-11-04 08:32:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 931 states have (on average 1.3447905477980666) internal successors, (1252), 936 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1252 transitions. [2021-11-04 08:32:38,041 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1252 transitions. Word has length 148 [2021-11-04 08:32:38,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:32:38,041 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1252 transitions. [2021-11-04 08:32:38,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:38,041 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1252 transitions. [2021-11-04 08:32:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-04 08:32:38,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:32:38,043 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:32:38,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 08:32:38,043 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:32:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:32:38,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2065324013, now seen corresponding path program 1 times [2021-11-04 08:32:38,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:32:38,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967829674] [2021-11-04 08:32:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:32:38,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:32:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:32:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-04 08:32:38,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:32:38,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967829674] [2021-11-04 08:32:38,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967829674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:32:38,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:32:38,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 08:32:38,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141875081] [2021-11-04 08:32:38,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:32:38,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:32:38,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:32:38,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:32:38,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:32:38,158 INFO L87 Difference]: Start difference. First operand 937 states and 1252 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:32:44,241 INFO L93 Difference]: Finished difference Result 1983 states and 2674 transitions. [2021-11-04 08:32:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 08:32:44,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 155 [2021-11-04 08:32:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:32:44,244 INFO L225 Difference]: With dead ends: 1983 [2021-11-04 08:32:44,244 INFO L226 Difference]: Without dead ends: 1084 [2021-11-04 08:32:44,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.04ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:32:44,246 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5589.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.07ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6026.72ms IncrementalHoareTripleChecker+Time [2021-11-04 08:32:44,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 3293 Unknown, 0 Unchecked, 4.07ms Time], IncrementalHoareTripleChecker [11 Valid, 3282 Invalid, 0 Unknown, 0 Unchecked, 6026.72ms Time] [2021-11-04 08:32:44,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-11-04 08:32:44,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 937. [2021-11-04 08:32:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 931 states have (on average 1.3447905477980666) internal successors, (1252), 936 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1252 transitions. [2021-11-04 08:32:44,261 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1252 transitions. Word has length 155 [2021-11-04 08:32:44,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:32:44,262 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1252 transitions. [2021-11-04 08:32:44,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:44,262 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1252 transitions. [2021-11-04 08:32:44,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-04 08:32:44,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:32:44,264 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:32:44,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 08:32:44,264 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:32:44,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:32:44,265 INFO L85 PathProgramCache]: Analyzing trace with hash 784494081, now seen corresponding path program 1 times [2021-11-04 08:32:44,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:32:44,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755049601] [2021-11-04 08:32:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:32:44,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:32:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:32:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-04 08:32:44,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:32:44,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755049601] [2021-11-04 08:32:44,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755049601] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:32:44,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807969546] [2021-11-04 08:32:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:32:44,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:32:44,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:32:44,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:32:44,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 08:32:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:32:44,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-04 08:32:44,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:32:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-04 08:32:45,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 08:32:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-04 08:32:45,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807969546] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 08:32:45,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 08:32:45,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-11-04 08:32:45,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531639085] [2021-11-04 08:32:45,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 08:32:45,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-04 08:32:45,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:32:45,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-04 08:32:45,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=148, Unknown=0, NotChecked=0, Total=272 [2021-11-04 08:32:45,535 INFO L87 Difference]: Start difference. First operand 937 states and 1252 transitions. Second operand has 17 states, 17 states have (on average 8.588235294117647) internal successors, (146), 17 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:56,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:32:56,728 INFO L93 Difference]: Finished difference Result 1887 states and 2543 transitions. [2021-11-04 08:32:56,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-04 08:32:56,729 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.588235294117647) internal successors, (146), 17 states have internal predecessors, (146), 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 156 [2021-11-04 08:32:56,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:32:56,731 INFO L225 Difference]: With dead ends: 1887 [2021-11-04 08:32:56,731 INFO L226 Difference]: Without dead ends: 965 [2021-11-04 08:32:56,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 123.46ms TimeCoverageRelationStatistics Valid=124, Invalid=148, Unknown=0, NotChecked=0, Total=272 [2021-11-04 08:32:56,733 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 4895 mSDsCounter, 0 mSdLazyCounter, 6059 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10305.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.49ms SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 6059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11092.34ms IncrementalHoareTripleChecker+Time [2021-11-04 08:32:56,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 6183 Unknown, 0 Unchecked, 9.49ms Time], IncrementalHoareTripleChecker [124 Valid, 6059 Invalid, 0 Unknown, 0 Unchecked, 11092.34ms Time] [2021-11-04 08:32:56,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2021-11-04 08:32:56,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 965. [2021-11-04 08:32:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 959 states have (on average 1.3347236704900938) internal successors, (1280), 964 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1280 transitions. [2021-11-04 08:32:56,749 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1280 transitions. Word has length 156 [2021-11-04 08:32:56,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:32:56,749 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1280 transitions. [2021-11-04 08:32:56,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.588235294117647) internal successors, (146), 17 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:32:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1280 transitions. [2021-11-04 08:32:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-04 08:32:56,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:32:56,752 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:32:56,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 08:32:56,970 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,SelfDestructingSolverStorable11 [2021-11-04 08:32:56,971 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:32:56,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:32:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1912634751, now seen corresponding path program 2 times [2021-11-04 08:32:56,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:32:56,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821485017] [2021-11-04 08:32:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:32:56,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:32:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:32:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-04 08:32:57,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:32:57,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821485017] [2021-11-04 08:32:57,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821485017] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:32:57,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678143417] [2021-11-04 08:32:57,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 08:32:57,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:32:57,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:32:57,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:32:57,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 08:32:57,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-04 08:32:57,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 08:32:57,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-04 08:32:57,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:32:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-11-04 08:32:57,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 08:32:57,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678143417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:32:57,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 08:32:57,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2021-11-04 08:32:57,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317108343] [2021-11-04 08:32:57,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:32:57,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 08:32:57,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:32:57,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 08:32:57,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-04 08:32:57,864 INFO L87 Difference]: Start difference. First operand 965 states and 1280 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:07,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:33:07,214 INFO L93 Difference]: Finished difference Result 2126 states and 2859 transitions. [2021-11-04 08:33:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 08:33:07,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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 168 [2021-11-04 08:33:07,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:33:07,217 INFO L225 Difference]: With dead ends: 2126 [2021-11-04 08:33:07,217 INFO L226 Difference]: Without dead ends: 1211 [2021-11-04 08:33:07,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 51.50ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-04 08:33:07,219 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 718 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 6230 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8450.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.99ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 6230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9218.54ms IncrementalHoareTripleChecker+Time [2021-11-04 08:33:07,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 0 Invalid, 6238 Unknown, 0 Unchecked, 12.99ms Time], IncrementalHoareTripleChecker [8 Valid, 6230 Invalid, 0 Unknown, 0 Unchecked, 9218.54ms Time] [2021-11-04 08:33:07,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-04 08:33:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 971. [2021-11-04 08:33:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 965 states have (on average 1.332642487046632) internal successors, (1286), 970 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:07,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1286 transitions. [2021-11-04 08:33:07,244 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1286 transitions. Word has length 168 [2021-11-04 08:33:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:33:07,245 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1286 transitions. [2021-11-04 08:33:07,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1286 transitions. [2021-11-04 08:33:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-04 08:33:07,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:33:07,247 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:33:07,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 08:33:07,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:33:07,469 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:33:07,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:33:07,470 INFO L85 PathProgramCache]: Analyzing trace with hash 959249890, now seen corresponding path program 1 times [2021-11-04 08:33:07,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:33:07,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959567106] [2021-11-04 08:33:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:33:07,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:33:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:33:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-04 08:33:07,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:33:07,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959567106] [2021-11-04 08:33:07,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959567106] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:33:07,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161181883] [2021-11-04 08:33:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:33:07,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:33:07,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:33:07,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:33:07,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 08:33:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:33:08,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 2175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 08:33:08,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:33:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-04 08:33:08,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 08:33:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-04 08:33:08,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161181883] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 08:33:08,467 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 08:33:08,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-11-04 08:33:08,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682881701] [2021-11-04 08:33:08,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 08:33:08,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 08:33:08,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:33:08,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 08:33:08,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-04 08:33:08,468 INFO L87 Difference]: Start difference. First operand 971 states and 1286 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:19,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:33:19,658 INFO L93 Difference]: Finished difference Result 5507 states and 7460 transitions. [2021-11-04 08:33:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 08:33:19,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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 169 [2021-11-04 08:33:19,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:33:19,678 INFO L225 Difference]: With dead ends: 5507 [2021-11-04 08:33:19,678 INFO L226 Difference]: Without dead ends: 4586 [2021-11-04 08:33:19,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 14.90ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-04 08:33:19,680 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10305 mSDsluCounter, 4266 mSDsCounter, 0 mSdLazyCounter, 6157 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9901.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10305 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.56ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 6157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10974.51ms IncrementalHoareTripleChecker+Time [2021-11-04 08:33:19,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10305 Valid, 0 Invalid, 6241 Unknown, 0 Unchecked, 19.56ms Time], IncrementalHoareTripleChecker [84 Valid, 6157 Invalid, 0 Unknown, 0 Unchecked, 10974.51ms Time] [2021-11-04 08:33:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2021-11-04 08:33:19,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 1223. [2021-11-04 08:33:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1217 states have (on average 1.322925225965489) internal successors, (1610), 1222 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1610 transitions. [2021-11-04 08:33:19,716 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1610 transitions. Word has length 169 [2021-11-04 08:33:19,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:33:19,716 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1610 transitions. [2021-11-04 08:33:19,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1610 transitions. [2021-11-04 08:33:19,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-04 08:33:19,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:33:19,719 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:33:19,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 08:33:19,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:33:19,923 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:33:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:33:19,924 INFO L85 PathProgramCache]: Analyzing trace with hash 573474733, now seen corresponding path program 2 times [2021-11-04 08:33:19,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:33:19,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152842077] [2021-11-04 08:33:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:33:19,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:33:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:33:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:33:20,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:33:20,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152842077] [2021-11-04 08:33:20,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152842077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:33:20,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:33:20,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:33:20,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638664966] [2021-11-04 08:33:20,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:33:20,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:33:20,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:33:20,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:33:20,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:33:20,057 INFO L87 Difference]: Start difference. First operand 1223 states and 1610 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:24,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:33:24,940 INFO L93 Difference]: Finished difference Result 2400 states and 3171 transitions. [2021-11-04 08:33:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:33:24,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 181 [2021-11-04 08:33:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:33:24,944 INFO L225 Difference]: With dead ends: 2400 [2021-11-04 08:33:24,944 INFO L226 Difference]: Without dead ends: 1227 [2021-11-04 08:33:24,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:33:24,946 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4483.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4833.00ms IncrementalHoareTripleChecker+Time [2021-11-04 08:33:24,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 2012 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [2 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 4833.00ms Time] [2021-11-04 08:33:24,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2021-11-04 08:33:24,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1227. [2021-11-04 08:33:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1221 states have (on average 1.3218673218673218) internal successors, (1614), 1226 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1614 transitions. [2021-11-04 08:33:24,966 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1614 transitions. Word has length 181 [2021-11-04 08:33:24,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:33:24,966 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 1614 transitions. [2021-11-04 08:33:24,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:24,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1614 transitions. [2021-11-04 08:33:24,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-04 08:33:24,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:33:24,969 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:33:24,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-04 08:33:24,969 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:33:24,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:33:24,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1066238642, now seen corresponding path program 1 times [2021-11-04 08:33:24,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:33:24,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408822788] [2021-11-04 08:33:24,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:33:24,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:33:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:33:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:33:25,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:33:25,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408822788] [2021-11-04 08:33:25,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408822788] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:33:25,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432512302] [2021-11-04 08:33:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:33:25,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:33:25,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:33:25,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:33:25,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 08:33:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:33:26,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 2212 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-04 08:33:26,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:33:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-04 08:33:27,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 08:33:27,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432512302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:33:27,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 08:33:27,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-04 08:33:27,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726924490] [2021-11-04 08:33:27,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:33:27,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 08:33:27,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:33:27,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 08:33:27,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-04 08:33:27,023 INFO L87 Difference]: Start difference. First operand 1227 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:33:36,725 INFO L93 Difference]: Finished difference Result 3703 states and 4916 transitions. [2021-11-04 08:33:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 08:33:36,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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 183 [2021-11-04 08:33:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:33:36,732 INFO L225 Difference]: With dead ends: 3703 [2021-11-04 08:33:36,732 INFO L226 Difference]: Without dead ends: 2526 [2021-11-04 08:33:36,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 24.77ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-04 08:33:36,734 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2003 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 4498 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8866.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.02ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 4498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9562.13ms IncrementalHoareTripleChecker+Time [2021-11-04 08:33:36,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2003 Valid, 0 Invalid, 4518 Unknown, 0 Unchecked, 9.02ms Time], IncrementalHoareTripleChecker [20 Valid, 4498 Invalid, 0 Unknown, 0 Unchecked, 9562.13ms Time] [2021-11-04 08:33:36,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-11-04 08:33:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 1233. [2021-11-04 08:33:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1227 states have (on average 1.3202933985330074) internal successors, (1620), 1232 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:36,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1620 transitions. [2021-11-04 08:33:36,766 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1620 transitions. Word has length 183 [2021-11-04 08:33:36,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:33:36,766 INFO L470 AbstractCegarLoop]: Abstraction has 1233 states and 1620 transitions. [2021-11-04 08:33:36,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:36,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1620 transitions. [2021-11-04 08:33:36,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-04 08:33:36,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:33:36,769 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:33:36,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-04 08:33:36,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-04 08:33:36,986 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:33:36,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:33:36,987 INFO L85 PathProgramCache]: Analyzing trace with hash -514015437, now seen corresponding path program 1 times [2021-11-04 08:33:36,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:33:36,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035550869] [2021-11-04 08:33:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:33:36,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:33:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:33:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:33:37,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:33:37,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035550869] [2021-11-04 08:33:37,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035550869] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:33:37,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51332376] [2021-11-04 08:33:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:33:37,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:33:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:33:37,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:33:37,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 08:33:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:33:39,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 2233 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-04 08:33:39,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:33:39,425 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-04 08:33:39,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 08:33:39,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51332376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:33:39,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 08:33:39,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-04 08:33:39,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179156365] [2021-11-04 08:33:39,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:33:39,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 08:33:39,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:33:39,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 08:33:39,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-04 08:33:39,427 INFO L87 Difference]: Start difference. First operand 1233 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:33:48,297 INFO L93 Difference]: Finished difference Result 3629 states and 4804 transitions. [2021-11-04 08:33:48,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 08:33:48,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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 184 [2021-11-04 08:33:48,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:33:48,315 INFO L225 Difference]: With dead ends: 3629 [2021-11-04 08:33:48,315 INFO L226 Difference]: Without dead ends: 2446 [2021-11-04 08:33:48,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 31.29ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-04 08:33:48,318 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2193 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 5137 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7996.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.38ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8709.17ms IncrementalHoareTripleChecker+Time [2021-11-04 08:33:48,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2193 Valid, 0 Invalid, 5158 Unknown, 0 Unchecked, 10.38ms Time], IncrementalHoareTripleChecker [21 Valid, 5137 Invalid, 0 Unknown, 0 Unchecked, 8709.17ms Time] [2021-11-04 08:33:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2021-11-04 08:33:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 1239. [2021-11-04 08:33:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1233 states have (on average 1.3187347931873479) internal successors, (1626), 1238 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:48,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1626 transitions. [2021-11-04 08:33:48,345 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1626 transitions. Word has length 184 [2021-11-04 08:33:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:33:48,345 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1626 transitions. [2021-11-04 08:33:48,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:48,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1626 transitions. [2021-11-04 08:33:48,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-04 08:33:48,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:33:48,348 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:33:48,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 08:33:48,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-04 08:33:48,553 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:33:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:33:48,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1124979993, now seen corresponding path program 1 times [2021-11-04 08:33:48,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:33:48,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692079768] [2021-11-04 08:33:48,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:33:48,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:33:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:33:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:33:48,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:33:48,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692079768] [2021-11-04 08:33:48,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692079768] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:33:48,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839709326] [2021-11-04 08:33:48,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:33:48,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:33:48,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:33:48,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:33:48,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 08:33:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:33:50,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2254 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 08:33:50,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:33:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-04 08:33:50,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 08:33:50,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839709326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:33:50,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 08:33:50,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 08:33:50,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213467644] [2021-11-04 08:33:50,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:33:50,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:33:50,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:33:50,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:33:50,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:33:50,686 INFO L87 Difference]: Start difference. First operand 1239 states and 1626 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:55,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:33:55,500 INFO L93 Difference]: Finished difference Result 2543 states and 3364 transitions. [2021-11-04 08:33:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:33:55,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 185 [2021-11-04 08:33:55,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:33:55,503 INFO L225 Difference]: With dead ends: 2543 [2021-11-04 08:33:55,503 INFO L226 Difference]: Without dead ends: 1354 [2021-11-04 08:33:55,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.42ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:33:55,506 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4405.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4748.13ms IncrementalHoareTripleChecker+Time [2021-11-04 08:33:55,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 2105 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [2 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 4748.13ms Time] [2021-11-04 08:33:55,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-11-04 08:33:55,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1241. [2021-11-04 08:33:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1235 states have (on average 1.3182186234817814) internal successors, (1628), 1240 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1628 transitions. [2021-11-04 08:33:55,530 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1628 transitions. Word has length 185 [2021-11-04 08:33:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:33:55,531 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1628 transitions. [2021-11-04 08:33:55,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:33:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1628 transitions. [2021-11-04 08:33:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-04 08:33:55,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:33:55,533 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:33:55,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-04 08:33:55,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:33:55,736 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:33:55,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:33:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash 609124457, now seen corresponding path program 1 times [2021-11-04 08:33:55,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:33:55,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875252178] [2021-11-04 08:33:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:33:55,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:33:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:33:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:33:55,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:33:55,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875252178] [2021-11-04 08:33:55,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875252178] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:33:55,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822959038] [2021-11-04 08:33:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:33:55,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:33:55,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:33:55,891 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:33:55,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 08:33:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:33:57,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 2253 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-04 08:33:57,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:33:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-04 08:33:57,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 08:33:57,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822959038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:33:57,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 08:33:57,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-04 08:33:57,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664145668] [2021-11-04 08:33:57,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:33:57,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:33:57,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:33:57,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:33:57,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-04 08:33:57,388 INFO L87 Difference]: Start difference. First operand 1241 states and 1628 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:34:03,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:34:03,378 INFO L93 Difference]: Finished difference Result 2776 states and 3687 transitions. [2021-11-04 08:34:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 08:34:03,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 185 [2021-11-04 08:34:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:34:03,381 INFO L225 Difference]: With dead ends: 2776 [2021-11-04 08:34:03,382 INFO L226 Difference]: Without dead ends: 1585 [2021-11-04 08:34:03,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.32ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-04 08:34:03,384 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 407 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 3460 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5434.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.17ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5903.37ms IncrementalHoareTripleChecker+Time [2021-11-04 08:34:03,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 0 Invalid, 3467 Unknown, 0 Unchecked, 5.17ms Time], IncrementalHoareTripleChecker [7 Valid, 3460 Invalid, 0 Unknown, 0 Unchecked, 5903.37ms Time] [2021-11-04 08:34:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-11-04 08:34:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1245. [2021-11-04 08:34:03,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1239 states have (on average 1.3171912832929782) internal successors, (1632), 1244 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:34:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1632 transitions. [2021-11-04 08:34:03,407 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1632 transitions. Word has length 185 [2021-11-04 08:34:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:34:03,407 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1632 transitions. [2021-11-04 08:34:03,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:34:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1632 transitions. [2021-11-04 08:34:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-04 08:34:03,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:34:03,409 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:34:03,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-04 08:34:03,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:34:03,610 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:34:03,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:34:03,610 INFO L85 PathProgramCache]: Analyzing trace with hash -298604172, now seen corresponding path program 1 times [2021-11-04 08:34:03,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:34:03,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446274816] [2021-11-04 08:34:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:34:03,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:34:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:34:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:34:03,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:34:03,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446274816] [2021-11-04 08:34:03,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446274816] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:34:03,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217761433] [2021-11-04 08:34:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:34:03,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:34:03,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:34:03,764 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:34:03,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 08:34:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:34:05,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 2267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-04 08:34:05,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:34:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-04 08:34:05,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 08:34:05,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217761433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:34:05,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 08:34:05,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-04 08:34:05,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749363289] [2021-11-04 08:34:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:34:05,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 08:34:05,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:34:05,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 08:34:05,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-04 08:34:05,653 INFO L87 Difference]: Start difference. First operand 1245 states and 1632 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:34:14,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:34:14,990 INFO L93 Difference]: Finished difference Result 3147 states and 4178 transitions. [2021-11-04 08:34:14,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 08:34:14,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 188 [2021-11-04 08:34:14,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:34:14,994 INFO L225 Difference]: With dead ends: 3147 [2021-11-04 08:34:14,994 INFO L226 Difference]: Without dead ends: 1952 [2021-11-04 08:34:14,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.59ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-04 08:34:14,996 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1155 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 4865 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8551.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.33ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9213.92ms IncrementalHoareTripleChecker+Time [2021-11-04 08:34:14,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 0 Invalid, 4883 Unknown, 0 Unchecked, 8.33ms Time], IncrementalHoareTripleChecker [18 Valid, 4865 Invalid, 0 Unknown, 0 Unchecked, 9213.92ms Time] [2021-11-04 08:34:14,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2021-11-04 08:34:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1251. [2021-11-04 08:34:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1245 states have (on average 1.3156626506024096) internal successors, (1638), 1250 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:34:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1638 transitions. [2021-11-04 08:34:15,023 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1638 transitions. Word has length 188 [2021-11-04 08:34:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:34:15,023 INFO L470 AbstractCegarLoop]: Abstraction has 1251 states and 1638 transitions. [2021-11-04 08:34:15,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:34:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1638 transitions. [2021-11-04 08:34:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-04 08:34:15,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:34:15,025 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:34:15,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-04 08:34:15,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:34:15,231 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:34:15,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:34:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2140905906, now seen corresponding path program 1 times [2021-11-04 08:34:15,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:34:15,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849090701] [2021-11-04 08:34:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:34:15,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:34:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:34:15,388 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:34:15,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:34:15,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849090701] [2021-11-04 08:34:15,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849090701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:34:15,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256778077] [2021-11-04 08:34:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:34:15,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:34:15,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:34:15,390 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:34:15,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 08:34:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:34:16,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 08:34:16,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:34:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:34:17,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 08:34:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:34:17,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256778077] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 08:34:17,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 08:34:17,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-04 08:34:17,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318876030] [2021-11-04 08:34:17,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 08:34:17,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 08:34:17,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:34:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 08:34:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-04 08:34:17,351 INFO L87 Difference]: Start difference. First operand 1251 states and 1638 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:34:25,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:34:25,557 INFO L93 Difference]: Finished difference Result 2464 states and 3239 transitions. [2021-11-04 08:34:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 08:34:25,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 189 [2021-11-04 08:34:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:34:25,560 INFO L225 Difference]: With dead ends: 2464 [2021-11-04 08:34:25,560 INFO L226 Difference]: Without dead ends: 1263 [2021-11-04 08:34:25,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 21.87ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-04 08:34:25,562 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 4032 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7576.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.43ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8120.95ms IncrementalHoareTripleChecker+Time [2021-11-04 08:34:25,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 4047 Unknown, 0 Unchecked, 5.43ms Time], IncrementalHoareTripleChecker [15 Valid, 4032 Invalid, 0 Unknown, 0 Unchecked, 8120.95ms Time] [2021-11-04 08:34:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2021-11-04 08:34:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1263. [2021-11-04 08:34:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1257 states have (on average 1.3126491646778042) internal successors, (1650), 1262 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:34:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1650 transitions. [2021-11-04 08:34:25,586 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1650 transitions. Word has length 189 [2021-11-04 08:34:25,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:34:25,587 INFO L470 AbstractCegarLoop]: Abstraction has 1263 states and 1650 transitions. [2021-11-04 08:34:25,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:34:25,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1650 transitions. [2021-11-04 08:34:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-04 08:34:25,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:34:25,589 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:34:25,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-04 08:34:25,803 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,SelfDestructingSolverStorable20 [2021-11-04 08:34:25,803 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:34:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:34:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash 554441729, now seen corresponding path program 2 times [2021-11-04 08:34:25,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:34:25,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856295070] [2021-11-04 08:34:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:34:25,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:34:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:34:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:34:25,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:34:25,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856295070] [2021-11-04 08:34:25,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856295070] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:34:25,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254339596] [2021-11-04 08:34:25,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 08:34:25,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:34:25,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:34:25,985 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:34:25,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-04 08:35:31,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 08:35:31,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 08:35:31,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 2309 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-04 08:35:31,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 08:35:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:35:31,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 08:35:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:35:31,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254339596] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 08:35:31,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 08:35:31,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-04 08:35:31,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850650381] [2021-11-04 08:35:31,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 08:35:31,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-04 08:35:31,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:35:31,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-04 08:35:31,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-04 08:35:31,732 INFO L87 Difference]: Start difference. First operand 1263 states and 1650 transitions. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:35:42,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:35:42,911 INFO L93 Difference]: Finished difference Result 2500 states and 3281 transitions. [2021-11-04 08:35:42,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 08:35:42,911 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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 195 [2021-11-04 08:35:42,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:35:42,914 INFO L225 Difference]: With dead ends: 2500 [2021-11-04 08:35:42,914 INFO L226 Difference]: Without dead ends: 1287 [2021-11-04 08:35:42,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 383 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 205.97ms TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2021-11-04 08:35:42,915 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 5042 mSDsCounter, 0 mSdLazyCounter, 6130 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10132.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.98ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 6130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10939.90ms IncrementalHoareTripleChecker+Time [2021-11-04 08:35:42,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 6185 Unknown, 0 Unchecked, 8.98ms Time], IncrementalHoareTripleChecker [55 Valid, 6130 Invalid, 0 Unknown, 0 Unchecked, 10939.90ms Time] [2021-11-04 08:35:42,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-11-04 08:35:42,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1287. [2021-11-04 08:35:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1281 states have (on average 1.306791569086651) internal successors, (1674), 1286 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:35:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1674 transitions. [2021-11-04 08:35:42,942 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1674 transitions. Word has length 195 [2021-11-04 08:35:42,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:35:42,942 INFO L470 AbstractCegarLoop]: Abstraction has 1287 states and 1674 transitions. [2021-11-04 08:35:42,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:35:42,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1674 transitions. [2021-11-04 08:35:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-04 08:35:42,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:35:42,945 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 8, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:35:42,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-04 08:35:43,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-04 08:35:43,163 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 08:35:43,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:35:43,164 INFO L85 PathProgramCache]: Analyzing trace with hash -21112097, now seen corresponding path program 3 times [2021-11-04 08:35:43,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:35:43,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082773202] [2021-11-04 08:35:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:35:43,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:35:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:35:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-04 08:35:43,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:35:43,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082773202] [2021-11-04 08:35:43,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082773202] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 08:35:43,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457027051] [2021-11-04 08:35:43,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 08:35:43,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 08:35:43,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:35:43,434 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 08:35:43,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15