./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--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.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 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:55:39,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:55:39,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:55:39,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:55:39,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:55:39,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:55:39,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:55:39,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:55:39,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:55:39,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:55:39,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:55:39,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:55:39,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:55:39,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:55:39,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:55:39,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:55:39,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:55:39,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:55:39,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:55:39,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:55:39,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:55:39,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:55:39,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:55:39,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:55:39,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:55:39,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:55:39,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:55:39,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:55:39,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:55:39,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:55:39,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:55:39,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:55:39,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:55:39,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:55:39,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:55:39,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:55:39,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:55:39,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:55:39,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:55:39,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:55:39,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:55:39,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:55:39,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:55:39,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:55:39,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:55:39,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:55:39,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:55:39,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:55:39,435 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:55:39,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:55:39,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:55:39,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:55:39,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:55:39,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:55:39,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:55:39,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:55:39,437 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:55:39,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:55:39,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:55:39,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:55:39,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:55:39,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:55:39,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:55:39,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:55:39,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:55:39,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:55:39,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:55:39,438 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:55:39,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:55:39,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:55:39,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:55:39,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 [2021-11-06 17:55:39,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:55:39,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:55:39,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:55:39,649 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:55:39,650 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:55:39,651 INFO L432 ainManager$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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-06 17:55:39,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243f08a6a/e6b278fe11bd44d9a0715d143c09b16d/FLAGb0d399226 [2021-11-06 17:55:40,298 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:55:40,299 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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-06 17:55:40,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243f08a6a/e6b278fe11bd44d9a0715d143c09b16d/FLAGb0d399226 [2021-11-06 17:55:40,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243f08a6a/e6b278fe11bd44d9a0715d143c09b16d [2021-11-06 17:55:40,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:55:40,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:55:40,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:55:40,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:55:40,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:55:40,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:55:40" (1/1) ... [2021-11-06 17:55:40,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f165917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:40, skipping insertion in model container [2021-11-06 17:55:40,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:55:40" (1/1) ... [2021-11-06 17:55:40,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:55:40,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:55:42,118 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-06 17:55:42,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:55:42,213 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:55:42,449 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-06 17:55:42,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:55:42,606 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:55:42,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42 WrapperNode [2021-11-06 17:55:42,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:55:42,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:55:42,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:55:42,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:55:42,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42" (1/1) ... [2021-11-06 17:55:42,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42" (1/1) ... [2021-11-06 17:55:43,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:55:43,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:55:43,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:55:43,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:55:43,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42" (1/1) ... [2021-11-06 17:55:43,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42" (1/1) ... [2021-11-06 17:55:43,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42" (1/1) ... [2021-11-06 17:55:43,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42" (1/1) ... [2021-11-06 17:55:43,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42" (1/1) ... [2021-11-06 17:55:43,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42" (1/1) ... [2021-11-06 17:55:43,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42" (1/1) ... [2021-11-06 17:55:43,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:55:43,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:55:43,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:55:43,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:55:43,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42" (1/1) ... [2021-11-06 17:55:43,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:55:43,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:55:43,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 17:55:43,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 17:55:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-06 17:55:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 17:55:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:55:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:55:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:55:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 17:55:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:55:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:55:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:55:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:55:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:55:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:55:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:55:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:55:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:55:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 17:55:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:55:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:55:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:56:13,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:56:13,999 INFO L299 CfgBuilder]: Removed 1993 assume(true) statements. [2021-11-06 17:56:14,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:56:14 BoogieIcfgContainer [2021-11-06 17:56:14,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:56:14,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:56:14,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:56:14,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:56:14,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:55:40" (1/3) ... [2021-11-06 17:56:14,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d6bde1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:56:14, skipping insertion in model container [2021-11-06 17:56:14,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:55:42" (2/3) ... [2021-11-06 17:56:14,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d6bde1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:56:14, skipping insertion in model container [2021-11-06 17:56:14,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:56:14" (3/3) ... [2021-11-06 17:56:14,009 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-06 17:56:14,012 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:56:14,012 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-06 17:56:14,053 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:56:14,058 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 17:56:14,058 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-06 17:56:14,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 17:56:14,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:14,109 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:14,110 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:14,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:14,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1062845019, now seen corresponding path program 1 times [2021-11-06 17:56:14,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:14,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653025305] [2021-11-06 17:56:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:14,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:56:14,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:14,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653025305] [2021-11-06 17:56:14,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653025305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:14,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:14,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:56:14,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963424316] [2021-11-06 17:56:14,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:56:14,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:15,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:56:15,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:56:15,006 INFO L87 Difference]: Start difference. First operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:15,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:15,082 INFO L93 Difference]: Finished difference Result 4048 states and 5647 transitions. [2021-11-06 17:56:15,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:56:15,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-06 17:56:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:15,106 INFO L225 Difference]: With dead ends: 4048 [2021-11-06 17:56:15,106 INFO L226 Difference]: Without dead ends: 2009 [2021-11-06 17:56:15,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:56:15,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2021-11-06 17:56:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 2009. [2021-11-06 17:56:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1990 states have (on average 1.3633165829145728) internal successors, (2713), 2008 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2713 transitions. [2021-11-06 17:56:15,208 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2713 transitions. Word has length 103 [2021-11-06 17:56:15,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:15,208 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2713 transitions. [2021-11-06 17:56:15,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:15,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2713 transitions. [2021-11-06 17:56:15,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 17:56:15,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:15,211 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:15,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:56:15,211 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:15,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash 666457411, now seen corresponding path program 1 times [2021-11-06 17:56:15,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:15,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830298931] [2021-11-06 17:56:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:15,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:56:15,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:15,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830298931] [2021-11-06 17:56:15,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830298931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:15,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:15,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:56:15,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084067057] [2021-11-06 17:56:15,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:56:15,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:56:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:15,769 INFO L87 Difference]: Start difference. First operand 2009 states and 2713 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:16,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:16,054 INFO L93 Difference]: Finished difference Result 5095 states and 6983 transitions. [2021-11-06 17:56:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:56:16,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-06 17:56:16,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:16,063 INFO L225 Difference]: With dead ends: 5095 [2021-11-06 17:56:16,063 INFO L226 Difference]: Without dead ends: 3170 [2021-11-06 17:56:16,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2021-11-06 17:56:16,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3159. [2021-11-06 17:56:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3140 states have (on average 1.3869426751592357) internal successors, (4355), 3158 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4355 transitions. [2021-11-06 17:56:16,117 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4355 transitions. Word has length 103 [2021-11-06 17:56:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:16,119 INFO L470 AbstractCegarLoop]: Abstraction has 3159 states and 4355 transitions. [2021-11-06 17:56:16,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4355 transitions. [2021-11-06 17:56:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 17:56:16,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:16,122 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:16,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:56:16,124 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:16,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:16,125 INFO L85 PathProgramCache]: Analyzing trace with hash -211769177, now seen corresponding path program 1 times [2021-11-06 17:56:16,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:16,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286230487] [2021-11-06 17:56:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:16,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:56:16,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:16,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286230487] [2021-11-06 17:56:16,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286230487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:16,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:16,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:56:16,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000038243] [2021-11-06 17:56:16,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:56:16,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:56:16,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:16,565 INFO L87 Difference]: Start difference. First operand 3159 states and 4355 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:16,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:16,861 INFO L93 Difference]: Finished difference Result 8855 states and 12269 transitions. [2021-11-06 17:56:16,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:56:16,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-06 17:56:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:16,881 INFO L225 Difference]: With dead ends: 8855 [2021-11-06 17:56:16,881 INFO L226 Difference]: Without dead ends: 5780 [2021-11-06 17:56:16,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2021-11-06 17:56:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5720. [2021-11-06 17:56:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5701 states have (on average 1.3960708647605684) internal successors, (7959), 5719 states have internal predecessors, (7959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 7959 transitions. [2021-11-06 17:56:16,982 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 7959 transitions. Word has length 104 [2021-11-06 17:56:16,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:16,983 INFO L470 AbstractCegarLoop]: Abstraction has 5720 states and 7959 transitions. [2021-11-06 17:56:16,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 7959 transitions. [2021-11-06 17:56:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 17:56:16,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:16,985 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:16,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:56:16,986 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:16,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1985592461, now seen corresponding path program 1 times [2021-11-06 17:56:16,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:16,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227550743] [2021-11-06 17:56:16,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:16,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:56:17,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:17,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227550743] [2021-11-06 17:56:17,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227550743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:17,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:17,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:56:17,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376394895] [2021-11-06 17:56:17,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:56:17,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:56:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:17,341 INFO L87 Difference]: Start difference. First operand 5720 states and 7959 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:18,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:18,042 INFO L93 Difference]: Finished difference Result 13638 states and 18852 transitions. [2021-11-06 17:56:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:56:18,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-06 17:56:18,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:18,065 INFO L225 Difference]: With dead ends: 13638 [2021-11-06 17:56:18,065 INFO L226 Difference]: Without dead ends: 8002 [2021-11-06 17:56:18,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2021-11-06 17:56:18,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 7970. [2021-11-06 17:56:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7970 states, 7951 states have (on average 1.3790718148660546) internal successors, (10965), 7969 states have internal predecessors, (10965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7970 states to 7970 states and 10965 transitions. [2021-11-06 17:56:18,203 INFO L78 Accepts]: Start accepts. Automaton has 7970 states and 10965 transitions. Word has length 108 [2021-11-06 17:56:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:18,203 INFO L470 AbstractCegarLoop]: Abstraction has 7970 states and 10965 transitions. [2021-11-06 17:56:18,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:18,204 INFO L276 IsEmpty]: Start isEmpty. Operand 7970 states and 10965 transitions. [2021-11-06 17:56:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 17:56:18,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:18,206 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:18,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:56:18,206 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:18,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:18,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1132510402, now seen corresponding path program 1 times [2021-11-06 17:56:18,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:18,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285387854] [2021-11-06 17:56:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:18,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:56:18,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:18,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285387854] [2021-11-06 17:56:18,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285387854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:18,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:18,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:56:18,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040664221] [2021-11-06 17:56:18,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:56:18,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:18,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:56:18,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:56:18,586 INFO L87 Difference]: Start difference. First operand 7970 states and 10965 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:18,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:18,942 INFO L93 Difference]: Finished difference Result 23528 states and 32456 transitions. [2021-11-06 17:56:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 17:56:18,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2021-11-06 17:56:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:18,992 INFO L225 Difference]: With dead ends: 23528 [2021-11-06 17:56:18,992 INFO L226 Difference]: Without dead ends: 15642 [2021-11-06 17:56:19,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:56:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15642 states. [2021-11-06 17:56:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15642 to 7814. [2021-11-06 17:56:19,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7795 states have (on average 1.38216805644644) internal successors, (10774), 7813 states have internal predecessors, (10774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 10774 transitions. [2021-11-06 17:56:19,224 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 10774 transitions. Word has length 137 [2021-11-06 17:56:19,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:19,225 INFO L470 AbstractCegarLoop]: Abstraction has 7814 states and 10774 transitions. [2021-11-06 17:56:19,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 10774 transitions. [2021-11-06 17:56:19,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-06 17:56:19,227 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:19,227 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:19,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:56:19,228 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:19,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:19,229 INFO L85 PathProgramCache]: Analyzing trace with hash 93089651, now seen corresponding path program 1 times [2021-11-06 17:56:19,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:19,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024020890] [2021-11-06 17:56:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:19,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:56:19,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:19,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024020890] [2021-11-06 17:56:19,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024020890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:19,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:19,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:56:19,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318335364] [2021-11-06 17:56:19,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:56:19,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:19,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:56:19,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:56:19,672 INFO L87 Difference]: Start difference. First operand 7814 states and 10774 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:22,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:22,067 INFO L93 Difference]: Finished difference Result 15548 states and 21460 transitions. [2021-11-06 17:56:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 17:56:22,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2021-11-06 17:56:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:22,080 INFO L225 Difference]: With dead ends: 15548 [2021-11-06 17:56:22,080 INFO L226 Difference]: Without dead ends: 7814 [2021-11-06 17:56:22,091 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:56:22,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7814 states. [2021-11-06 17:56:22,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7814 to 7814. [2021-11-06 17:56:22,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7795 states have (on average 1.3819114817190508) internal successors, (10772), 7813 states have internal predecessors, (10772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 10772 transitions. [2021-11-06 17:56:22,239 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 10772 transitions. Word has length 139 [2021-11-06 17:56:22,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:22,239 INFO L470 AbstractCegarLoop]: Abstraction has 7814 states and 10772 transitions. [2021-11-06 17:56:22,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 10772 transitions. [2021-11-06 17:56:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-06 17:56:22,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:22,242 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:22,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:56:22,243 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:22,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1429478067, now seen corresponding path program 1 times [2021-11-06 17:56:22,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:22,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699866228] [2021-11-06 17:56:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:22,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 17:56:22,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:22,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699866228] [2021-11-06 17:56:22,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699866228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:22,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:22,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:56:22,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825995853] [2021-11-06 17:56:22,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:56:22,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:22,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:56:22,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:22,652 INFO L87 Difference]: Start difference. First operand 7814 states and 10772 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:22,949 INFO L93 Difference]: Finished difference Result 7814 states and 10772 transitions. [2021-11-06 17:56:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:56:22,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 143 [2021-11-06 17:56:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:22,961 INFO L225 Difference]: With dead ends: 7814 [2021-11-06 17:56:22,961 INFO L226 Difference]: Without dead ends: 7790 [2021-11-06 17:56:22,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:22,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7790 states. [2021-11-06 17:56:23,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 7790. [2021-11-06 17:56:23,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7790 states, 7783 states have (on average 1.3763330335346267) internal successors, (10712), 7789 states have internal predecessors, (10712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:23,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 10712 transitions. [2021-11-06 17:56:23,235 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 10712 transitions. Word has length 143 [2021-11-06 17:56:23,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:23,235 INFO L470 AbstractCegarLoop]: Abstraction has 7790 states and 10712 transitions. [2021-11-06 17:56:23,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:23,236 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 10712 transitions. [2021-11-06 17:56:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 17:56:23,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:23,240 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:23,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 17:56:23,240 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:23,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:23,241 INFO L85 PathProgramCache]: Analyzing trace with hash 975428840, now seen corresponding path program 1 times [2021-11-06 17:56:23,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:23,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259997495] [2021-11-06 17:56:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:23,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:56:23,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:23,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259997495] [2021-11-06 17:56:23,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259997495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:23,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:23,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:56:23,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625797537] [2021-11-06 17:56:23,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:56:23,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:23,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:56:23,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:23,617 INFO L87 Difference]: Start difference. First operand 7790 states and 10712 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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) [2021-11-06 17:56:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:26,473 INFO L93 Difference]: Finished difference Result 17882 states and 24605 transitions. [2021-11-06 17:56:26,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:56:26,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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 148 [2021-11-06 17:56:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:26,489 INFO L225 Difference]: With dead ends: 17882 [2021-11-06 17:56:26,490 INFO L226 Difference]: Without dead ends: 10176 [2021-11-06 17:56:26,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:26,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10176 states. [2021-11-06 17:56:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10176 to 10112. [2021-11-06 17:56:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10112 states, 10105 states have (on average 1.3664522513607125) internal successors, (13808), 10111 states have internal predecessors, (13808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10112 states to 10112 states and 13808 transitions. [2021-11-06 17:56:26,675 INFO L78 Accepts]: Start accepts. Automaton has 10112 states and 13808 transitions. Word has length 148 [2021-11-06 17:56:26,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:26,677 INFO L470 AbstractCegarLoop]: Abstraction has 10112 states and 13808 transitions. [2021-11-06 17:56:26,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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) [2021-11-06 17:56:26,677 INFO L276 IsEmpty]: Start isEmpty. Operand 10112 states and 13808 transitions. [2021-11-06 17:56:26,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 17:56:26,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:26,680 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:26,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 17:56:26,680 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:26,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:26,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1236843536, now seen corresponding path program 1 times [2021-11-06 17:56:26,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:26,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155842665] [2021-11-06 17:56:26,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:26,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:56:27,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:27,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155842665] [2021-11-06 17:56:27,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155842665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:27,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:27,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:56:27,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951645057] [2021-11-06 17:56:27,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:56:27,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:56:27,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:27,028 INFO L87 Difference]: Start difference. First operand 10112 states and 13808 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:29,614 INFO L93 Difference]: Finished difference Result 23042 states and 31702 transitions. [2021-11-06 17:56:29,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:56:29,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2021-11-06 17:56:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:29,638 INFO L225 Difference]: With dead ends: 23042 [2021-11-06 17:56:29,638 INFO L226 Difference]: Without dead ends: 13014 [2021-11-06 17:56:29,650 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:29,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13014 states. [2021-11-06 17:56:29,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13014 to 13011. [2021-11-06 17:56:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13011 states, 13004 states have (on average 1.379729314057213) internal successors, (17942), 13010 states have internal predecessors, (17942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13011 states to 13011 states and 17942 transitions. [2021-11-06 17:56:29,870 INFO L78 Accepts]: Start accepts. Automaton has 13011 states and 17942 transitions. Word has length 149 [2021-11-06 17:56:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:29,871 INFO L470 AbstractCegarLoop]: Abstraction has 13011 states and 17942 transitions. [2021-11-06 17:56:29,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 13011 states and 17942 transitions. [2021-11-06 17:56:29,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-06 17:56:29,876 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:29,876 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:29,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 17:56:29,877 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:29,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1569447921, now seen corresponding path program 1 times [2021-11-06 17:56:29,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:29,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64654595] [2021-11-06 17:56:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:29,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 17:56:30,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:30,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64654595] [2021-11-06 17:56:30,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64654595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:30,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:30,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:56:30,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772880324] [2021-11-06 17:56:30,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:56:30,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:30,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:56:30,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:56:30,254 INFO L87 Difference]: Start difference. First operand 13011 states and 17942 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:33,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:33,150 INFO L93 Difference]: Finished difference Result 31435 states and 43274 transitions. [2021-11-06 17:56:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:56:33,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 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 159 [2021-11-06 17:56:33,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:33,188 INFO L225 Difference]: With dead ends: 31435 [2021-11-06 17:56:33,188 INFO L226 Difference]: Without dead ends: 18508 [2021-11-06 17:56:33,203 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:56:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18508 states. [2021-11-06 17:56:33,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18508 to 13023. [2021-11-06 17:56:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13023 states, 13016 states have (on average 1.379379225568531) internal successors, (17954), 13022 states have internal predecessors, (17954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13023 states to 13023 states and 17954 transitions. [2021-11-06 17:56:33,498 INFO L78 Accepts]: Start accepts. Automaton has 13023 states and 17954 transitions. Word has length 159 [2021-11-06 17:56:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:33,499 INFO L470 AbstractCegarLoop]: Abstraction has 13023 states and 17954 transitions. [2021-11-06 17:56:33,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 13023 states and 17954 transitions. [2021-11-06 17:56:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-06 17:56:33,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:33,507 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:33,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 17:56:33,507 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:33,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:33,507 INFO L85 PathProgramCache]: Analyzing trace with hash 228838889, now seen corresponding path program 1 times [2021-11-06 17:56:33,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:33,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697144855] [2021-11-06 17:56:33,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:33,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 17:56:34,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:34,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697144855] [2021-11-06 17:56:34,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697144855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:34,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:34,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:56:34,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246302960] [2021-11-06 17:56:34,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:56:34,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:34,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:56:34,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:56:34,282 INFO L87 Difference]: Start difference. First operand 13023 states and 17954 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:36,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:36,770 INFO L93 Difference]: Finished difference Result 26045 states and 35933 transitions. [2021-11-06 17:56:36,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:56:36,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 [2021-11-06 17:56:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:36,796 INFO L225 Difference]: With dead ends: 26045 [2021-11-06 17:56:36,797 INFO L226 Difference]: Without dead ends: 13099 [2021-11-06 17:56:36,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:56:36,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13099 states. [2021-11-06 17:56:37,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13099 to 13023. [2021-11-06 17:56:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13023 states, 13016 states have (on average 1.3791487400122926) internal successors, (17951), 13022 states have internal predecessors, (17951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13023 states to 13023 states and 17951 transitions. [2021-11-06 17:56:37,253 INFO L78 Accepts]: Start accepts. Automaton has 13023 states and 17951 transitions. Word has length 168 [2021-11-06 17:56:37,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:37,253 INFO L470 AbstractCegarLoop]: Abstraction has 13023 states and 17951 transitions. [2021-11-06 17:56:37,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand 13023 states and 17951 transitions. [2021-11-06 17:56:37,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-06 17:56:37,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:37,261 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:37,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 17:56:37,262 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:37,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:37,262 INFO L85 PathProgramCache]: Analyzing trace with hash -987314837, now seen corresponding path program 1 times [2021-11-06 17:56:37,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:37,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246427485] [2021-11-06 17:56:37,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:37,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 17:56:38,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:38,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246427485] [2021-11-06 17:56:38,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246427485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:38,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:38,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 17:56:38,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561148003] [2021-11-06 17:56:38,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 17:56:38,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 17:56:38,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 17:56:38,029 INFO L87 Difference]: Start difference. First operand 13023 states and 17951 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:42,115 INFO L93 Difference]: Finished difference Result 37923 states and 52573 transitions. [2021-11-06 17:56:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 17:56:42,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 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 [2021-11-06 17:56:42,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:42,155 INFO L225 Difference]: With dead ends: 37923 [2021-11-06 17:56:42,155 INFO L226 Difference]: Without dead ends: 24957 [2021-11-06 17:56:42,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-06 17:56:42,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24957 states. [2021-11-06 17:56:42,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24957 to 13023. [2021-11-06 17:56:42,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13023 states, 13016 states have (on average 1.378918254456054) internal successors, (17948), 13022 states have internal predecessors, (17948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:42,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13023 states to 13023 states and 17948 transitions. [2021-11-06 17:56:42,491 INFO L78 Accepts]: Start accepts. Automaton has 13023 states and 17948 transitions. Word has length 168 [2021-11-06 17:56:42,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:42,493 INFO L470 AbstractCegarLoop]: Abstraction has 13023 states and 17948 transitions. [2021-11-06 17:56:42,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:42,493 INFO L276 IsEmpty]: Start isEmpty. Operand 13023 states and 17948 transitions. [2021-11-06 17:56:42,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-06 17:56:42,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:42,499 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:42,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 17:56:42,500 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:42,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1526404221, now seen corresponding path program 1 times [2021-11-06 17:56:42,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:42,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754542079] [2021-11-06 17:56:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:42,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 17:56:43,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:43,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754542079] [2021-11-06 17:56:43,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754542079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:43,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:56:43,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:56:43,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667095377] [2021-11-06 17:56:43,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:56:43,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:43,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:56:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:43,548 INFO L87 Difference]: Start difference. First operand 13023 states and 17948 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:44,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:44,014 INFO L93 Difference]: Finished difference Result 25993 states and 35849 transitions. [2021-11-06 17:56:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:56:44,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 174 [2021-11-06 17:56:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:44,043 INFO L225 Difference]: With dead ends: 25993 [2021-11-06 17:56:44,044 INFO L226 Difference]: Without dead ends: 13030 [2021-11-06 17:56:44,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:56:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13030 states. [2021-11-06 17:56:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13030 to 13030. [2021-11-06 17:56:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13030 states, 13023 states have (on average 1.3787145818935729) internal successors, (17955), 13029 states have internal predecessors, (17955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:44,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13030 states to 13030 states and 17955 transitions. [2021-11-06 17:56:44,391 INFO L78 Accepts]: Start accepts. Automaton has 13030 states and 17955 transitions. Word has length 174 [2021-11-06 17:56:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:44,392 INFO L470 AbstractCegarLoop]: Abstraction has 13030 states and 17955 transitions. [2021-11-06 17:56:44,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 13030 states and 17955 transitions. [2021-11-06 17:56:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-06 17:56:44,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:44,399 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:44,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 17:56:44,399 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:44,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:44,400 INFO L85 PathProgramCache]: Analyzing trace with hash 749433849, now seen corresponding path program 1 times [2021-11-06 17:56:44,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:44,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677034603] [2021-11-06 17:56:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:44,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-06 17:56:45,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:45,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677034603] [2021-11-06 17:56:45,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677034603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:56:45,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51140558] [2021-11-06 17:56:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:45,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:56:45,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:56:45,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 17:56:45,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 17:56:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:47,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 6632 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 17:56:47,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:56:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 17:56:47,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51140558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:56:47,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:56:47,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 17:56:47,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418470529] [2021-11-06 17:56:47,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:56:47,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:56:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:56:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 17:56:47,831 INFO L87 Difference]: Start difference. First operand 13030 states and 17955 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:56:50,572 INFO L93 Difference]: Finished difference Result 25933 states and 35773 transitions. [2021-11-06 17:56:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:56:50,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 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 [2021-11-06 17:56:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:56:50,595 INFO L225 Difference]: With dead ends: 25933 [2021-11-06 17:56:50,595 INFO L226 Difference]: Without dead ends: 12983 [2021-11-06 17:56:50,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:56:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2021-11-06 17:56:50,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 12949. [2021-11-06 17:56:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12949 states, 12942 states have (on average 1.3806212331942513) internal successors, (17868), 12948 states have internal predecessors, (17868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12949 states to 12949 states and 17868 transitions. [2021-11-06 17:56:50,933 INFO L78 Accepts]: Start accepts. Automaton has 12949 states and 17868 transitions. Word has length 181 [2021-11-06 17:56:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:56:50,934 INFO L470 AbstractCegarLoop]: Abstraction has 12949 states and 17868 transitions. [2021-11-06 17:56:50,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:56:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 12949 states and 17868 transitions. [2021-11-06 17:56:50,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-06 17:56:50,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:56:50,949 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:56:50,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 17:56:51,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 17:56:51,176 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:56:51,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:56:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2073928628, now seen corresponding path program 1 times [2021-11-06 17:56:51,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:56:51,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139879022] [2021-11-06 17:56:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:51,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:56:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-06 17:56:54,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:56:54,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139879022] [2021-11-06 17:56:54,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139879022] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:56:54,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989055231] [2021-11-06 17:56:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:56:54,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:56:54,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:56:54,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 17:56:54,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 17:56:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:56:56,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 6741 conjuncts, 139 conjunts are in the unsatisfiable core [2021-11-06 17:56:56,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:56:57,643 INFO L354 Elim1Store]: treesize reduction 776, result has 5.0 percent of original size [2021-11-06 17:56:57,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 18 case distinctions, treesize of input 142 treesize of output 149 [2021-11-06 17:56:59,258 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-06 17:56:59,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-06 17:57:00,551 INFO L354 Elim1Store]: treesize reduction 148, result has 27.1 percent of original size [2021-11-06 17:57:00,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 45 treesize of output 84 [2021-11-06 17:57:02,652 INFO L354 Elim1Store]: treesize reduction 214, result has 23.0 percent of original size [2021-11-06 17:57:02,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 74 treesize of output 120 [2021-11-06 17:57:05,911 INFO L354 Elim1Store]: treesize reduction 288, result has 20.2 percent of original size [2021-11-06 17:57:05,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 107 treesize of output 160 [2021-11-06 17:57:10,918 INFO L354 Elim1Store]: treesize reduction 370, result has 18.1 percent of original size [2021-11-06 17:57:10,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 144 treesize of output 204 [2021-11-06 17:57:22,193 INFO L354 Elim1Store]: treesize reduction 460, result has 16.5 percent of original size [2021-11-06 17:57:22,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 185 treesize of output 252 [2021-11-06 17:57:40,732 INFO L354 Elim1Store]: treesize reduction 558, result has 15.2 percent of original size [2021-11-06 17:57:40,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 67 case distinctions, treesize of input 230 treesize of output 304 [2021-11-06 17:58:06,031 WARN L228 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-06 17:58:06,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-06 17:58:06,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:58:06,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-06 17:58:06,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107240771] [2021-11-06 17:58:06,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:58:06,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:58:06,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:58:06,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=53, Unknown=4, NotChecked=0, Total=90 [2021-11-06 17:58:06,034 INFO L87 Difference]: Start difference. First operand 12949 states and 17868 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:58:06,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:58:06,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-06 17:58:06,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 17:58:06,239 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,SelfDestructingSolverStorable14 [2021-11-06 17:58:06,240 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@3a3a4ed6 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-06 17:58:06,253 INFO L168 Benchmark]: Toolchain (without parser) took 145778.51 ms. Allocated memory was 98.6 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 54.1 MB in the beginning and 1.0 GB in the end (delta: -967.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. [2021-11-06 17:58:06,253 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 30.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 17:58:06,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2132.19 ms. Allocated memory was 98.6 MB in the beginning and 165.7 MB in the end (delta: 67.1 MB). Free memory was 53.9 MB in the beginning and 66.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. [2021-11-06 17:58:06,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 504.87 ms. Allocated memory is still 165.7 MB. Free memory was 66.3 MB in the beginning and 66.1 MB in the end (delta: 216.9 kB). Peak memory consumption was 42.3 MB. Max. memory is 16.1 GB. [2021-11-06 17:58:06,254 INFO L168 Benchmark]: Boogie Preprocessor took 573.66 ms. Allocated memory was 165.7 MB in the beginning and 331.4 MB in the end (delta: 165.7 MB). Free memory was 66.1 MB in the beginning and 178.3 MB in the end (delta: -112.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 16.1 GB. [2021-11-06 17:58:06,254 INFO L168 Benchmark]: RCFGBuilder took 30313.04 ms. Allocated memory was 331.4 MB in the beginning and 1.2 GB in the end (delta: 887.1 MB). Free memory was 178.3 MB in the beginning and 569.4 MB in the end (delta: -391.0 MB). Peak memory consumption was 725.4 MB. Max. memory is 16.1 GB. [2021-11-06 17:58:06,254 INFO L168 Benchmark]: TraceAbstraction took 112248.25 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 962.6 MB). Free memory was 569.4 MB in the beginning and 1.0 GB in the end (delta: -452.6 MB). Peak memory consumption was 510.9 MB. Max. memory is 16.1 GB. [2021-11-06 17:58:06,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 30.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2132.19 ms. Allocated memory was 98.6 MB in the beginning and 165.7 MB in the end (delta: 67.1 MB). Free memory was 53.9 MB in the beginning and 66.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 504.87 ms. Allocated memory is still 165.7 MB. Free memory was 66.3 MB in the beginning and 66.1 MB in the end (delta: 216.9 kB). Peak memory consumption was 42.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 573.66 ms. Allocated memory was 165.7 MB in the beginning and 331.4 MB in the end (delta: 165.7 MB). Free memory was 66.1 MB in the beginning and 178.3 MB in the end (delta: -112.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 30313.04 ms. Allocated memory was 331.4 MB in the beginning and 1.2 GB in the end (delta: 887.1 MB). Free memory was 178.3 MB in the beginning and 569.4 MB in the end (delta: -391.0 MB). Peak memory consumption was 725.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 112248.25 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 962.6 MB). Free memory was 569.4 MB in the beginning and 1.0 GB in the end (delta: -452.6 MB). Peak memory consumption was 510.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@3a3a4ed6 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@3a3a4ed6: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:58:08,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:58:08,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:58:08,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:58:08,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:58:08,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:58:08,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:58:08,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:58:08,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:58:08,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:58:08,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:58:08,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:58:08,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:58:08,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:58:08,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:58:08,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:58:08,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:58:08,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:58:08,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:58:08,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:58:08,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:58:08,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:58:08,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:58:08,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:58:08,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:58:08,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:58:08,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:58:08,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:58:08,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:58:08,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:58:08,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:58:08,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:58:08,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:58:08,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:58:08,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:58:08,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:58:08,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:58:08,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:58:08,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:58:08,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:58:08,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:58:08,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-06 17:58:08,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:58:08,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:58:08,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:58:08,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:58:08,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:58:08,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:58:08,185 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:58:08,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:58:08,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:58:08,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:58:08,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:58:08,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:58:08,186 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-06 17:58:08,186 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-06 17:58:08,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:58:08,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:58:08,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:58:08,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:58:08,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:58:08,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:58:08,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:58:08,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:58:08,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:58:08,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:58:08,188 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-06 17:58:08,188 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-06 17:58:08,188 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:58:08,189 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:58:08,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:58:08,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:58:08,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-06 17:58:08,189 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 [2021-11-06 17:58:08,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:58:08,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:58:08,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:58:08,474 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:58:08,474 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:58:08,475 INFO L432 ainManager$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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-06 17:58:08,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91b2cb0e/f861ee4d5e1f409c939e261fd622ff96/FLAG60633d914 [2021-11-06 17:58:09,128 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:58:09,129 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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-06 17:58:09,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91b2cb0e/f861ee4d5e1f409c939e261fd622ff96/FLAG60633d914 [2021-11-06 17:58:09,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e91b2cb0e/f861ee4d5e1f409c939e261fd622ff96 [2021-11-06 17:58:09,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:58:09,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:58:09,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:58:09,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:58:09,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:58:09,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:58:09" (1/1) ... [2021-11-06 17:58:09,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa8ac25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:09, skipping insertion in model container [2021-11-06 17:58:09,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:58:09" (1/1) ... [2021-11-06 17:58:09,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:58:09,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:58:10,841 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-06 17:58:10,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:58:10,945 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:58:11,303 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-06 17:58:11,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:58:11,535 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:58:11,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11 WrapperNode [2021-11-06 17:58:11,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:58:11,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:58:11,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:58:11,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:58:11,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11" (1/1) ... [2021-11-06 17:58:11,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11" (1/1) ... [2021-11-06 17:58:11,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:58:11,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:58:11,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:58:11,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:58:11,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11" (1/1) ... [2021-11-06 17:58:11,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11" (1/1) ... [2021-11-06 17:58:12,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11" (1/1) ... [2021-11-06 17:58:12,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11" (1/1) ... [2021-11-06 17:58:12,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11" (1/1) ... [2021-11-06 17:58:12,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11" (1/1) ... [2021-11-06 17:58:12,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11" (1/1) ... [2021-11-06 17:58:12,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:58:12,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:58:12,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:58:12,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:58:12,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11" (1/1) ... [2021-11-06 17:58:12,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:58:12,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:58:12,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 17:58:12,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 17:58:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-06 17:58:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-06 17:58:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-06 17:58:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 17:58:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-06 17:58:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:58:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-06 17:58:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:58:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:58:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 17:58:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:58:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-06 17:58:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-06 17:58:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-06 17:58:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:58:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-06 17:58:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:58:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-06 17:58:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-06 17:58:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-06 17:58:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-06 17:58:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-06 17:58:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-06 17:58:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-06 17:58:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-06 17:58:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:58:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:58:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 17:58:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-06 17:58:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-06 17:58:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-06 17:58:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-06 17:58:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:58:12,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:59:21,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:59:21,034 INFO L299 CfgBuilder]: Removed 1993 assume(true) statements. [2021-11-06 17:59:21,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:59:21 BoogieIcfgContainer [2021-11-06 17:59:21,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:59:21,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:59:21,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:59:21,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:59:21,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:58:09" (1/3) ... [2021-11-06 17:59:21,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420c77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:59:21, skipping insertion in model container [2021-11-06 17:59:21,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:58:11" (2/3) ... [2021-11-06 17:59:21,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420c77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:59:21, skipping insertion in model container [2021-11-06 17:59:21,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:59:21" (3/3) ... [2021-11-06 17:59:21,043 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-06 17:59:21,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:59:21,046 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-06 17:59:21,086 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:59:21,089 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 17:59:21,089 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-06 17:59:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 17:59:21,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:59:21,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:59:21,139 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:59:21,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:59:21,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1062845019, now seen corresponding path program 1 times [2021-11-06 17:59:21,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 17:59:21,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535795474] [2021-11-06 17:59:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:59:21,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 17:59:21,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 17:59:21,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 17:59:21,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-06 17:59:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:59:26,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-06 17:59:26,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:59:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:59:27,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 17:59:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:59:28,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 17:59:28,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535795474] [2021-11-06 17:59:28,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535795474] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 17:59:28,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:59:28,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-06 17:59:28,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997556451] [2021-11-06 17:59:28,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:59:28,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 17:59:28,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:59:28,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:59:28,117 INFO L87 Difference]: Start difference. First operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:59:28,201 INFO L93 Difference]: Finished difference Result 4048 states and 5647 transitions. [2021-11-06 17:59:28,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:59:28,202 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-06 17:59:28,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:59:28,224 INFO L225 Difference]: With dead ends: 4048 [2021-11-06 17:59:28,224 INFO L226 Difference]: Without dead ends: 2009 [2021-11-06 17:59:28,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:59:28,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2021-11-06 17:59:28,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 2009. [2021-11-06 17:59:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1990 states have (on average 1.3633165829145728) internal successors, (2713), 2008 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:28,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2713 transitions. [2021-11-06 17:59:28,326 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2713 transitions. Word has length 103 [2021-11-06 17:59:28,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:59:28,326 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2713 transitions. [2021-11-06 17:59:28,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:28,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2713 transitions. [2021-11-06 17:59:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 17:59:28,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:59:28,329 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:59:28,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-06 17:59:28,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 17:59:28,544 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:59:28,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:59:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash 666457411, now seen corresponding path program 1 times [2021-11-06 17:59:28,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 17:59:28,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056599023] [2021-11-06 17:59:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:59:28,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 17:59:28,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 17:59:28,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 17:59:28,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-06 17:59:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:59:33,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 17:59:33,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:59:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:59:33,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 17:59:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:59:34,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 17:59:34,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056599023] [2021-11-06 17:59:34,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056599023] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 17:59:34,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:59:34,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 17:59:34,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397910956] [2021-11-06 17:59:34,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:59:34,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 17:59:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:59:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:59:34,611 INFO L87 Difference]: Start difference. First operand 2009 states and 2713 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:59:35,620 INFO L93 Difference]: Finished difference Result 3978 states and 5405 transitions. [2021-11-06 17:59:35,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 17:59:35,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 103 [2021-11-06 17:59:35,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:59:35,627 INFO L225 Difference]: With dead ends: 3978 [2021-11-06 17:59:35,627 INFO L226 Difference]: Without dead ends: 2029 [2021-11-06 17:59:35,630 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:59:35,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-11-06 17:59:35,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2029. [2021-11-06 17:59:35,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 2010 states have (on average 1.3597014925373134) internal successors, (2733), 2028 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2733 transitions. [2021-11-06 17:59:35,657 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2733 transitions. Word has length 103 [2021-11-06 17:59:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:59:35,657 INFO L470 AbstractCegarLoop]: Abstraction has 2029 states and 2733 transitions. [2021-11-06 17:59:35,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2733 transitions. [2021-11-06 17:59:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 17:59:35,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:59:35,659 INFO L513 BasicCegarLoop]: trace histogram [2, 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] [2021-11-06 17:59:35,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-06 17:59:35,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 17:59:35,881 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:59:35,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:59:35,882 INFO L85 PathProgramCache]: Analyzing trace with hash 376382417, now seen corresponding path program 1 times [2021-11-06 17:59:35,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 17:59:35,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485182609] [2021-11-06 17:59:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:59:35,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 17:59:35,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 17:59:35,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 17:59:35,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-06 17:59:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:59:41,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 3482 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 17:59:41,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:59:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-06 17:59:42,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 17:59:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-06 17:59:43,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 17:59:43,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485182609] [2021-11-06 17:59:43,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485182609] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 17:59:43,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 17:59:43,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-06 17:59:43,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880313217] [2021-11-06 17:59:43,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 17:59:43,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 17:59:43,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 17:59:43,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:59:43,564 INFO L87 Difference]: Start difference. First operand 2029 states and 2733 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:47,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:59:47,937 INFO L93 Difference]: Finished difference Result 4022 states and 5455 transitions. [2021-11-06 17:59:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 17:59:47,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 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 118 [2021-11-06 17:59:47,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:59:47,945 INFO L225 Difference]: With dead ends: 4022 [2021-11-06 17:59:47,945 INFO L226 Difference]: Without dead ends: 2055 [2021-11-06 17:59:47,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-06 17:59:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2021-11-06 17:59:47,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2055. [2021-11-06 17:59:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 2036 states have (on average 1.3551080550098231) internal successors, (2759), 2054 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:47,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2759 transitions. [2021-11-06 17:59:47,975 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2759 transitions. Word has length 118 [2021-11-06 17:59:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:59:47,975 INFO L470 AbstractCegarLoop]: Abstraction has 2055 states and 2759 transitions. [2021-11-06 17:59:47,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:47,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2759 transitions. [2021-11-06 17:59:47,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-06 17:59:47,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:59:47,978 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:59:48,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-06 17:59:48,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 17:59:48,201 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:59:48,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:59:48,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1432068527, now seen corresponding path program 2 times [2021-11-06 17:59:48,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 17:59:48,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285792975] [2021-11-06 17:59:48,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 17:59:48,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 17:59:48,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 17:59:48,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 17:59:48,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-06 17:59:52,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 17:59:52,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 17:59:52,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:59:52,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:59:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-06 17:59:53,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 17:59:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-06 17:59:53,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 17:59:53,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285792975] [2021-11-06 17:59:53,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285792975] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 17:59:53,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:59:53,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-06 17:59:53,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046665565] [2021-11-06 17:59:53,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:59:53,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 17:59:53,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:59:53,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:59:53,756 INFO L87 Difference]: Start difference. First operand 2055 states and 2759 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:55,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:59:55,021 INFO L93 Difference]: Finished difference Result 5168 states and 7056 transitions. [2021-11-06 17:59:55,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:59:55,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 134 [2021-11-06 17:59:55,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:59:55,031 INFO L225 Difference]: With dead ends: 5168 [2021-11-06 17:59:55,031 INFO L226 Difference]: Without dead ends: 3228 [2021-11-06 17:59:55,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:59:55,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2021-11-06 17:59:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 3217. [2021-11-06 17:59:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3217 states, 3198 states have (on average 1.3799249530956847) internal successors, (4413), 3216 states have internal predecessors, (4413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 4413 transitions. [2021-11-06 17:59:55,086 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 4413 transitions. Word has length 134 [2021-11-06 17:59:55,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:59:55,087 INFO L470 AbstractCegarLoop]: Abstraction has 3217 states and 4413 transitions. [2021-11-06 17:59:55,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:59:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 4413 transitions. [2021-11-06 17:59:55,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 17:59:55,089 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:59:55,089 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:59:55,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-06 17:59:55,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 17:59:55,315 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 17:59:55,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:59:55,316 INFO L85 PathProgramCache]: Analyzing trace with hash -841563815, now seen corresponding path program 1 times [2021-11-06 17:59:55,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 17:59:55,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480921155] [2021-11-06 17:59:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:59:55,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 17:59:55,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 17:59:55,326 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 17:59:55,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-06 18:00:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:00:00,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 3575 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 18:00:00,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:00:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:00:02,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:00:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:00:04,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:00:04,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480921155] [2021-11-06 18:00:04,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480921155] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 18:00:04,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 18:00:04,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-06 18:00:04,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038782655] [2021-11-06 18:00:04,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 18:00:04,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:00:04,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 18:00:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-06 18:00:04,088 INFO L87 Difference]: Start difference. First operand 3217 states and 4413 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:00:18,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:00:18,341 INFO L93 Difference]: Finished difference Result 6378 states and 8782 transitions. [2021-11-06 18:00:18,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 18:00:18,343 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 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 135 [2021-11-06 18:00:18,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:00:18,353 INFO L225 Difference]: With dead ends: 6378 [2021-11-06 18:00:18,353 INFO L226 Difference]: Without dead ends: 3231 [2021-11-06 18:00:18,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-06 18:00:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-11-06 18:00:18,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3231. [2021-11-06 18:00:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 3212 states have (on average 1.37826899128269) internal successors, (4427), 3230 states have internal predecessors, (4427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:00:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 4427 transitions. [2021-11-06 18:00:18,417 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 4427 transitions. Word has length 135 [2021-11-06 18:00:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:00:18,418 INFO L470 AbstractCegarLoop]: Abstraction has 3231 states and 4427 transitions. [2021-11-06 18:00:18,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:00:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 4427 transitions. [2021-11-06 18:00:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 18:00:18,419 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:00:18,420 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:00:18,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-06 18:00:18,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:00:18,635 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:00:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:00:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 407361319, now seen corresponding path program 2 times [2021-11-06 18:00:18,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:00:18,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878954891] [2021-11-06 18:00:18,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 18:00:18,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:00:18,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:00:18,643 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:00:18,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-06 18:00:23,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 18:00:23,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 18:00:23,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:00:23,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:00:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:00:24,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:00:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:00:24,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:00:24,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878954891] [2021-11-06 18:00:24,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878954891] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:00:24,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:00:24,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-06 18:00:24,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112135525] [2021-11-06 18:00:24,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:00:24,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:00:24,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:00:24,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:00:24,815 INFO L87 Difference]: Start difference. First operand 3231 states and 4427 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:00:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:00:26,037 INFO L93 Difference]: Finished difference Result 8999 states and 12413 transitions. [2021-11-06 18:00:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:00:26,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 140 [2021-11-06 18:00:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:00:26,052 INFO L225 Difference]: With dead ends: 8999 [2021-11-06 18:00:26,052 INFO L226 Difference]: Without dead ends: 5888 [2021-11-06 18:00:26,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:00:26,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2021-11-06 18:00:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5828. [2021-11-06 18:00:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 5809 states have (on average 1.3887071785160958) internal successors, (8067), 5827 states have internal predecessors, (8067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:00:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8067 transitions. [2021-11-06 18:00:26,152 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 8067 transitions. Word has length 140 [2021-11-06 18:00:26,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:00:26,153 INFO L470 AbstractCegarLoop]: Abstraction has 5828 states and 8067 transitions. [2021-11-06 18:00:26,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:00:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 8067 transitions. [2021-11-06 18:00:26,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-06 18:00:26,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:00:26,155 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:00:26,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-06 18:00:26,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:00:26,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:00:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:00:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1594206989, now seen corresponding path program 1 times [2021-11-06 18:00:26,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:00:26,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418983180] [2021-11-06 18:00:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:00:26,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:00:26,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:00:26,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:00:26,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-06 18:00:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:00:34,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 3608 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:00:34,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:00:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:00:34,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:00:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:00:35,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:00:35,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418983180] [2021-11-06 18:00:35,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418983180] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:00:35,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:00:35,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-06 18:00:35,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726366779] [2021-11-06 18:00:35,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:00:35,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:00:35,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:00:35,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:00:35,283 INFO L87 Difference]: Start difference. First operand 5828 states and 8067 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:00:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:00:38,684 INFO L93 Difference]: Finished difference Result 13826 states and 19040 transitions. [2021-11-06 18:00:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:00:38,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 144 [2021-11-06 18:00:38,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:00:38,740 INFO L225 Difference]: With dead ends: 13826 [2021-11-06 18:00:38,752 INFO L226 Difference]: Without dead ends: 8118 [2021-11-06 18:00:38,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:00:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2021-11-06 18:00:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8086. [2021-11-06 18:00:38,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8086 states, 8067 states have (on average 1.3736209247551754) internal successors, (11081), 8085 states have internal predecessors, (11081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:00:38,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 11081 transitions. [2021-11-06 18:00:38,960 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 11081 transitions. Word has length 144 [2021-11-06 18:00:38,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:00:38,960 INFO L470 AbstractCegarLoop]: Abstraction has 8086 states and 11081 transitions. [2021-11-06 18:00:38,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:00:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 11081 transitions. [2021-11-06 18:00:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-06 18:00:38,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:00:38,963 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:00:39,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-06 18:00:39,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:00:39,179 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:00:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:00:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1436017854, now seen corresponding path program 1 times [2021-11-06 18:00:39,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:00:39,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782050238] [2021-11-06 18:00:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:00:39,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:00:39,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:00:39,187 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:00:39,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-06 18:00:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:00:48,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 3791 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-06 18:00:48,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:00:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:00:49,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:00:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:00:50,962 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:00:50,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782050238] [2021-11-06 18:00:50,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782050238] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:00:50,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:00:50,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-06 18:00:50,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96886997] [2021-11-06 18:00:50,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 18:00:50,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:00:50,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 18:00:50,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 18:00:50,963 INFO L87 Difference]: Start difference. First operand 8086 states and 11081 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 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) [2021-11-06 18:01:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:01,741 INFO L93 Difference]: Finished difference Result 60454 states and 83870 transitions. [2021-11-06 18:01:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 18:01:01,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 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 173 [2021-11-06 18:01:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:01,860 INFO L225 Difference]: With dead ends: 60454 [2021-11-06 18:01:01,861 INFO L226 Difference]: Without dead ends: 52488 [2021-11-06 18:01:01,891 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 341 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-06 18:01:01,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52488 states. [2021-11-06 18:01:02,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52488 to 8126. [2021-11-06 18:01:02,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8126 states, 8107 states have (on average 1.3717774762550883) internal successors, (11121), 8125 states have internal predecessors, (11121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:01:02,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8126 states to 8126 states and 11121 transitions. [2021-11-06 18:01:02,368 INFO L78 Accepts]: Start accepts. Automaton has 8126 states and 11121 transitions. Word has length 173 [2021-11-06 18:01:02,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:02,368 INFO L470 AbstractCegarLoop]: Abstraction has 8126 states and 11121 transitions. [2021-11-06 18:01:02,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 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) [2021-11-06 18:01:02,368 INFO L276 IsEmpty]: Start isEmpty. Operand 8126 states and 11121 transitions. [2021-11-06 18:01:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-06 18:01:02,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:02,371 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:01:02,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-06 18:01:02,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:01:02,596 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:01:02,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:02,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1041651068, now seen corresponding path program 1 times [2021-11-06 18:01:02,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:01:02,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208136920] [2021-11-06 18:01:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:02,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:01:02,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:01:02,603 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:01:02,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-06 18:01:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:11,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 3791 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 18:01:11,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:01:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:01:13,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:01:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:01:15,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:01:15,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208136920] [2021-11-06 18:01:15,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208136920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:15,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:15,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-06 18:01:15,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596454953] [2021-11-06 18:01:15,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 18:01:15,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:01:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 18:01:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-06 18:01:15,412 INFO L87 Difference]: Start difference. First operand 8126 states and 11121 transitions. Second operand has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:01:39,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:39,226 INFO L93 Difference]: Finished difference Result 68293 states and 94604 transitions. [2021-11-06 18:01:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 18:01:39,228 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 0 states have call successors, (0), 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 173 [2021-11-06 18:01:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:39,330 INFO L225 Difference]: With dead ends: 68293 [2021-11-06 18:01:39,330 INFO L226 Difference]: Without dead ends: 60287 [2021-11-06 18:01:39,355 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2021-11-06 18:01:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60287 states. [2021-11-06 18:01:40,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60287 to 8142. [2021-11-06 18:01:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8142 states, 8123 states have (on average 1.3710451803520867) internal successors, (11137), 8141 states have internal predecessors, (11137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:01:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8142 states to 8142 states and 11137 transitions. [2021-11-06 18:01:40,141 INFO L78 Accepts]: Start accepts. Automaton has 8142 states and 11137 transitions. Word has length 173 [2021-11-06 18:01:40,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:40,141 INFO L470 AbstractCegarLoop]: Abstraction has 8142 states and 11137 transitions. [2021-11-06 18:01:40,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:01:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 8142 states and 11137 transitions. [2021-11-06 18:01:40,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-06 18:01:40,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:40,144 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:01:40,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-06 18:01:40,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:01:40,367 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:01:40,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:40,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2108156465, now seen corresponding path program 1 times [2021-11-06 18:01:40,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:01:40,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845663965] [2021-11-06 18:01:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:40,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:01:40,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:01:40,374 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:01:40,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-06 18:01:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:01:49,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 18:01:49,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:01:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:01:50,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:01:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:01:51,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:01:51,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845663965] [2021-11-06 18:01:51,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845663965] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:01:51,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:01:51,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-06 18:01:51,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70358169] [2021-11-06 18:01:51,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 18:01:51,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:01:51,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 18:01:51,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 18:01:51,359 INFO L87 Difference]: Start difference. First operand 8142 states and 11137 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:01:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:01:57,468 INFO L93 Difference]: Finished difference Result 24158 states and 33117 transitions. [2021-11-06 18:01:57,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 18:01:57,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 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 175 [2021-11-06 18:01:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:01:57,492 INFO L225 Difference]: With dead ends: 24158 [2021-11-06 18:01:57,492 INFO L226 Difference]: Without dead ends: 16000 [2021-11-06 18:01:57,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-06 18:01:57,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16000 states. [2021-11-06 18:01:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16000 to 8086. [2021-11-06 18:01:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8086 states, 8067 states have (on average 1.370645841080947) internal successors, (11057), 8085 states have internal predecessors, (11057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:01:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 11057 transitions. [2021-11-06 18:01:57,976 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 11057 transitions. Word has length 175 [2021-11-06 18:01:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:01:57,976 INFO L470 AbstractCegarLoop]: Abstraction has 8086 states and 11057 transitions. [2021-11-06 18:01:57,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:01:57,977 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 11057 transitions. [2021-11-06 18:01:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-06 18:01:57,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:01:57,979 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:01:58,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-06 18:01:58,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:01:58,208 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:01:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:01:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash 449540708, now seen corresponding path program 1 times [2021-11-06 18:01:58,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:01:58,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736348233] [2021-11-06 18:01:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:01:58,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:01:58,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:01:58,214 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:01:58,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-06 18:02:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:02:08,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 3817 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 18:02:08,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:02:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:02:08,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:02:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:02:09,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:02:09,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736348233] [2021-11-06 18:02:09,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736348233] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:02:09,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:02:09,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-06 18:02:09,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046664210] [2021-11-06 18:02:09,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:02:09,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:02:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:02:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:02:09,383 INFO L87 Difference]: Start difference. First operand 8086 states and 11057 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:02:11,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:02:11,091 INFO L93 Difference]: Finished difference Result 23804 states and 32684 transitions. [2021-11-06 18:02:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:02:11,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 179 [2021-11-06 18:02:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:02:11,160 INFO L225 Difference]: With dead ends: 23804 [2021-11-06 18:02:11,160 INFO L226 Difference]: Without dead ends: 15838 [2021-11-06 18:02:11,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:02:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15838 states. [2021-11-06 18:02:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15838 to 7930. [2021-11-06 18:02:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 7911 states have (on average 1.3758058399696624) internal successors, (10884), 7929 states have internal predecessors, (10884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:02:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 10884 transitions. [2021-11-06 18:02:11,759 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 10884 transitions. Word has length 179 [2021-11-06 18:02:11,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:02:11,759 INFO L470 AbstractCegarLoop]: Abstraction has 7930 states and 10884 transitions. [2021-11-06 18:02:11,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:02:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 10884 transitions. [2021-11-06 18:02:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-06 18:02:11,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:02:11,762 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:02:11,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-06 18:02:11,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:02:11,967 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:02:11,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:02:11,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1059430387, now seen corresponding path program 1 times [2021-11-06 18:02:11,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:02:11,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21345637] [2021-11-06 18:02:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:02:11,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:02:11,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:02:11,975 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:02:11,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-06 18:02:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:02:20,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 3843 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 18:02:20,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:02:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:02:22,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:02:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:02:22,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:02:22,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21345637] [2021-11-06 18:02:22,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21345637] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:02:22,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:02:22,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-06 18:02:22,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291898879] [2021-11-06 18:02:22,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 18:02:22,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:02:22,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 18:02:22,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:02:22,848 INFO L87 Difference]: Start difference. First operand 7930 states and 10884 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:02:26,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:02:26,323 INFO L93 Difference]: Finished difference Result 15723 states and 21622 transitions. [2021-11-06 18:02:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:02:26,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 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 [2021-11-06 18:02:26,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:02:26,334 INFO L225 Difference]: With dead ends: 15723 [2021-11-06 18:02:26,334 INFO L226 Difference]: Without dead ends: 7905 [2021-11-06 18:02:26,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 18:02:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7905 states. [2021-11-06 18:02:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7905 to 7888. [2021-11-06 18:02:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7888 states, 7869 states have (on average 1.377303342229) internal successors, (10838), 7887 states have internal predecessors, (10838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:02:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 10838 transitions. [2021-11-06 18:02:26,802 INFO L78 Accepts]: Start accepts. Automaton has 7888 states and 10838 transitions. Word has length 185 [2021-11-06 18:02:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:02:26,802 INFO L470 AbstractCegarLoop]: Abstraction has 7888 states and 10838 transitions. [2021-11-06 18:02:26,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:02:26,803 INFO L276 IsEmpty]: Start isEmpty. Operand 7888 states and 10838 transitions. [2021-11-06 18:02:26,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-06 18:02:26,805 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:02:26,805 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:02:26,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-06 18:02:27,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:02:27,020 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:02:27,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:02:27,020 INFO L85 PathProgramCache]: Analyzing trace with hash 195650102, now seen corresponding path program 1 times [2021-11-06 18:02:27,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:02:27,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898844168] [2021-11-06 18:02:27,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:02:27,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:02:27,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:02:27,027 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:02:27,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-06 18:02:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:02:36,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 3884 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:02:36,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:02:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:02:37,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:02:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:02:38,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:02:38,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898844168] [2021-11-06 18:02:38,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898844168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:02:38,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:02:38,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 18:02:38,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548215458] [2021-11-06 18:02:38,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:02:38,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:02:38,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:02:38,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:02:38,849 INFO L87 Difference]: Start difference. First operand 7888 states and 10838 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:02:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:02:43,202 INFO L93 Difference]: Finished difference Result 20576 states and 28626 transitions. [2021-11-06 18:02:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:02:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 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 191 [2021-11-06 18:02:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:02:43,224 INFO L225 Difference]: With dead ends: 20576 [2021-11-06 18:02:43,225 INFO L226 Difference]: Without dead ends: 12808 [2021-11-06 18:02:43,236 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:02:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12808 states. [2021-11-06 18:02:43,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12808 to 12752. [2021-11-06 18:02:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12752 states, 12733 states have (on average 1.400298437131862) internal successors, (17830), 12751 states have internal predecessors, (17830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:02:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12752 states to 12752 states and 17830 transitions. [2021-11-06 18:02:43,899 INFO L78 Accepts]: Start accepts. Automaton has 12752 states and 17830 transitions. Word has length 191 [2021-11-06 18:02:43,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:02:43,899 INFO L470 AbstractCegarLoop]: Abstraction has 12752 states and 17830 transitions. [2021-11-06 18:02:43,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:02:43,900 INFO L276 IsEmpty]: Start isEmpty. Operand 12752 states and 17830 transitions. [2021-11-06 18:02:43,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-06 18:02:43,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:02:43,903 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:02:43,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-06 18:02:44,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:02:44,128 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:02:44,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:02:44,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1921893868, now seen corresponding path program 1 times [2021-11-06 18:02:44,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:02:44,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732264711] [2021-11-06 18:02:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:02:44,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:02:44,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:02:44,134 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:02:44,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-06 18:02:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:02:53,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 3897 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:02:53,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:02:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-06 18:02:59,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:03:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-06 18:03:05,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:03:05,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732264711] [2021-11-06 18:03:05,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732264711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:05,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:05,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-06 18:03:05,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975123548] [2021-11-06 18:03:05,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:03:05,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:03:05,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:03:05,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:03:05,265 INFO L87 Difference]: Start difference. First operand 12752 states and 17830 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:06,732 INFO L93 Difference]: Finished difference Result 12752 states and 17830 transitions. [2021-11-06 18:03:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:03:06,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 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 192 [2021-11-06 18:03:06,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:06,751 INFO L225 Difference]: With dead ends: 12752 [2021-11-06 18:03:06,751 INFO L226 Difference]: Without dead ends: 12728 [2021-11-06 18:03:06,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:03:06,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12728 states. [2021-11-06 18:03:07,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12728 to 12728. [2021-11-06 18:03:07,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12728 states, 12721 states have (on average 1.3956449964625421) internal successors, (17754), 12727 states have internal predecessors, (17754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12728 states to 12728 states and 17754 transitions. [2021-11-06 18:03:07,417 INFO L78 Accepts]: Start accepts. Automaton has 12728 states and 17754 transitions. Word has length 192 [2021-11-06 18:03:07,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:07,418 INFO L470 AbstractCegarLoop]: Abstraction has 12728 states and 17754 transitions. [2021-11-06 18:03:07,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 12728 states and 17754 transitions. [2021-11-06 18:03:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-06 18:03:07,422 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:07,422 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:07,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-06 18:03:07,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:03:07,628 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:03:07,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:07,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1176081279, now seen corresponding path program 1 times [2021-11-06 18:03:07,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:03:07,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289987436] [2021-11-06 18:03:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:07,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:03:07,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:03:07,636 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:03:07,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-06 18:03:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:17,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 3915 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:03:17,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:03:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:03:18,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:03:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:03:19,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:03:19,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289987436] [2021-11-06 18:03:19,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289987436] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:19,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:19,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 18:03:19,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957506360] [2021-11-06 18:03:19,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:03:19,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:03:19,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:03:19,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:03:19,608 INFO L87 Difference]: Start difference. First operand 12728 states and 17754 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:27,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:27,230 INFO L93 Difference]: Finished difference Result 31916 states and 44692 transitions. [2021-11-06 18:03:27,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:03:27,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 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 197 [2021-11-06 18:03:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:27,259 INFO L225 Difference]: With dead ends: 31916 [2021-11-06 18:03:27,259 INFO L226 Difference]: Without dead ends: 19308 [2021-11-06 18:03:27,271 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:03:27,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19308 states. [2021-11-06 18:03:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19308 to 19228. [2021-11-06 18:03:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19228 states, 19221 states have (on average 1.387128661359971) internal successors, (26662), 19227 states have internal predecessors, (26662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:28,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19228 states to 19228 states and 26662 transitions. [2021-11-06 18:03:28,274 INFO L78 Accepts]: Start accepts. Automaton has 19228 states and 26662 transitions. Word has length 197 [2021-11-06 18:03:28,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:28,275 INFO L470 AbstractCegarLoop]: Abstraction has 19228 states and 26662 transitions. [2021-11-06 18:03:28,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:28,275 INFO L276 IsEmpty]: Start isEmpty. Operand 19228 states and 26662 transitions. [2021-11-06 18:03:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-06 18:03:28,283 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:28,283 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:28,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-06 18:03:28,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:03:28,488 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:03:28,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:28,489 INFO L85 PathProgramCache]: Analyzing trace with hash 284399362, now seen corresponding path program 1 times [2021-11-06 18:03:28,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:03:28,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089827924] [2021-11-06 18:03:28,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:28,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:03:28,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:03:28,495 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:03:28,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-06 18:03:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:38,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 3993 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 18:03:38,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:03:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-06 18:03:39,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:03:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-06 18:03:39,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:03:39,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089827924] [2021-11-06 18:03:39,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089827924] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:39,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:39,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 18:03:39,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59335684] [2021-11-06 18:03:39,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:03:39,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:03:39,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:03:39,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:03:39,565 INFO L87 Difference]: Start difference. First operand 19228 states and 26662 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:42,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:42,469 INFO L93 Difference]: Finished difference Result 34026 states and 47709 transitions. [2021-11-06 18:03:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:03:42,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2021-11-06 18:03:42,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:42,529 INFO L225 Difference]: With dead ends: 34026 [2021-11-06 18:03:42,529 INFO L226 Difference]: Without dead ends: 34016 [2021-11-06 18:03:42,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:03:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34016 states. [2021-11-06 18:03:43,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34016 to 19218. [2021-11-06 18:03:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19218 states, 19216 states have (on average 1.3851477935054122) internal successors, (26617), 19217 states have internal predecessors, (26617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19218 states to 19218 states and 26617 transitions. [2021-11-06 18:03:43,687 INFO L78 Accepts]: Start accepts. Automaton has 19218 states and 26617 transitions. Word has length 217 [2021-11-06 18:03:43,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:43,689 INFO L470 AbstractCegarLoop]: Abstraction has 19218 states and 26617 transitions. [2021-11-06 18:03:43,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:43,689 INFO L276 IsEmpty]: Start isEmpty. Operand 19218 states and 26617 transitions. [2021-11-06 18:03:43,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-06 18:03:43,704 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:43,704 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:43,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-06 18:03:43,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:03:43,921 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:03:43,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2059051649, now seen corresponding path program 1 times [2021-11-06 18:03:43,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:03:43,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180407847] [2021-11-06 18:03:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:43,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:03:43,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:03:43,936 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:03:43,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-06 18:03:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:53,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 4144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 18:03:53,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:03:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-06 18:03:54,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:03:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-06 18:03:56,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:03:56,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180407847] [2021-11-06 18:03:56,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180407847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:56,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:56,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-06 18:03:56,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972820928] [2021-11-06 18:03:56,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 18:03:56,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:03:56,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 18:03:56,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 18:03:56,283 INFO L87 Difference]: Start difference. First operand 19218 states and 26617 transitions. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:04:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:04:03,664 INFO L93 Difference]: Finished difference Result 55486 states and 76599 transitions. [2021-11-06 18:04:03,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 18:04:03,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 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 233 [2021-11-06 18:04:03,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:04:03,732 INFO L225 Difference]: With dead ends: 55486 [2021-11-06 18:04:03,733 INFO L226 Difference]: Without dead ends: 36388 [2021-11-06 18:04:03,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-06 18:04:03,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36388 states. [2021-11-06 18:04:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36388 to 19234. [2021-11-06 18:04:04,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19234 states, 19232 states have (on average 1.3848273710482528) internal successors, (26633), 19233 states have internal predecessors, (26633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:04:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19234 states to 19234 states and 26633 transitions. [2021-11-06 18:04:04,999 INFO L78 Accepts]: Start accepts. Automaton has 19234 states and 26633 transitions. Word has length 233 [2021-11-06 18:04:04,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:04:05,000 INFO L470 AbstractCegarLoop]: Abstraction has 19234 states and 26633 transitions. [2021-11-06 18:04:05,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:04:05,000 INFO L276 IsEmpty]: Start isEmpty. Operand 19234 states and 26633 transitions. [2021-11-06 18:04:05,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-06 18:04:05,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:04:05,017 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:04:05,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-06 18:04:05,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:04:05,243 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:04:05,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:04:05,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1974945632, now seen corresponding path program 1 times [2021-11-06 18:04:05,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:04:05,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069487324] [2021-11-06 18:04:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:04:05,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:04:05,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:04:05,251 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:04:05,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-06 18:04:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:04:16,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 4205 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:04:16,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:04:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-06 18:04:17,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:04:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-06 18:04:18,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:04:18,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069487324] [2021-11-06 18:04:18,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069487324] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:04:18,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:04:18,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 18:04:18,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046586795] [2021-11-06 18:04:18,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:04:18,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:04:18,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:04:18,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:04:18,942 INFO L87 Difference]: Start difference. First operand 19234 states and 26633 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:04:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:04:24,810 INFO L93 Difference]: Finished difference Result 71872 states and 100004 transitions. [2021-11-06 18:04:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:04:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 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 256 [2021-11-06 18:04:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:04:24,902 INFO L225 Difference]: With dead ends: 71872 [2021-11-06 18:04:24,902 INFO L226 Difference]: Without dead ends: 52758 [2021-11-06 18:04:24,928 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:04:24,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52758 states. [2021-11-06 18:04:26,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52758 to 19698. [2021-11-06 18:04:26,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19698 states, 19696 states have (on average 1.3822603574329813) internal successors, (27225), 19697 states have internal predecessors, (27225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:04:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19698 states to 19698 states and 27225 transitions. [2021-11-06 18:04:26,412 INFO L78 Accepts]: Start accepts. Automaton has 19698 states and 27225 transitions. Word has length 256 [2021-11-06 18:04:26,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:04:26,412 INFO L470 AbstractCegarLoop]: Abstraction has 19698 states and 27225 transitions. [2021-11-06 18:04:26,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:04:26,413 INFO L276 IsEmpty]: Start isEmpty. Operand 19698 states and 27225 transitions. [2021-11-06 18:04:26,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-06 18:04:26,429 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:04:26,430 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:04:26,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-06 18:04:26,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:04:26,644 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:04:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:04:26,645 INFO L85 PathProgramCache]: Analyzing trace with hash -278364029, now seen corresponding path program 1 times [2021-11-06 18:04:26,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:04:26,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019762940] [2021-11-06 18:04:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:04:26,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:04:26,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:04:26,653 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:04:26,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-06 18:04:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:04:36,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 4241 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:04:36,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:04:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-06 18:04:38,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:04:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-06 18:04:40,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:04:40,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019762940] [2021-11-06 18:04:40,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019762940] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:04:40,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:04:40,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 18:04:40,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486394703] [2021-11-06 18:04:40,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:04:40,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:04:40,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:04:40,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:04:40,243 INFO L87 Difference]: Start difference. First operand 19698 states and 27225 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:04:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:04:47,750 INFO L93 Difference]: Finished difference Result 76864 states and 106404 transitions. [2021-11-06 18:04:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 18:04:47,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 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 262 [2021-11-06 18:04:47,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:04:47,839 INFO L225 Difference]: With dead ends: 76864 [2021-11-06 18:04:47,839 INFO L226 Difference]: Without dead ends: 57286 [2021-11-06 18:04:47,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:04:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57286 states. [2021-11-06 18:04:49,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57286 to 22914. [2021-11-06 18:04:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22914 states, 22912 states have (on average 1.3708537011173185) internal successors, (31409), 22913 states have internal predecessors, (31409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:04:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22914 states to 22914 states and 31409 transitions. [2021-11-06 18:04:49,743 INFO L78 Accepts]: Start accepts. Automaton has 22914 states and 31409 transitions. Word has length 262 [2021-11-06 18:04:49,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:04:49,743 INFO L470 AbstractCegarLoop]: Abstraction has 22914 states and 31409 transitions. [2021-11-06 18:04:49,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:04:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 22914 states and 31409 transitions. [2021-11-06 18:04:49,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-06 18:04:49,762 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:04:49,762 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:04:49,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-06 18:04:49,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:04:49,975 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:04:49,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:04:49,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1288393921, now seen corresponding path program 1 times [2021-11-06 18:04:49,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:04:49,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842741110] [2021-11-06 18:04:49,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:04:49,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:04:49,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:04:49,983 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:04:49,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-06 18:05:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:05:01,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 4241 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-06 18:05:01,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:05:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-06 18:05:08,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:05:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-06 18:05:14,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:05:14,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842741110] [2021-11-06 18:05:14,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842741110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:05:14,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:05:14,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-06 18:05:14,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232318561] [2021-11-06 18:05:14,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-06 18:05:14,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:05:14,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-06 18:05:14,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-11-06 18:05:14,658 INFO L87 Difference]: Start difference. First operand 22914 states and 31409 transitions. Second operand has 20 states, 20 states have (on average 13.5) internal successors, (270), 20 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:06:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:06:22,190 INFO L93 Difference]: Finished difference Result 154405 states and 213802 transitions. [2021-11-06 18:06:22,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-06 18:06:22,192 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.5) internal successors, (270), 20 states have internal predecessors, (270), 0 states have call successors, (0), 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 262 [2021-11-06 18:06:22,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:06:22,597 INFO L225 Difference]: With dead ends: 154405 [2021-11-06 18:06:22,598 INFO L226 Difference]: Without dead ends: 131611 [2021-11-06 18:06:22,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=1156, Invalid=2876, Unknown=0, NotChecked=0, Total=4032 [2021-11-06 18:06:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131611 states. [2021-11-06 18:06:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131611 to 23050. [2021-11-06 18:06:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23050 states, 23048 states have (on average 1.3686653939604303) internal successors, (31545), 23049 states have internal predecessors, (31545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:06:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23050 states to 23050 states and 31545 transitions. [2021-11-06 18:06:26,425 INFO L78 Accepts]: Start accepts. Automaton has 23050 states and 31545 transitions. Word has length 262 [2021-11-06 18:06:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:06:26,426 INFO L470 AbstractCegarLoop]: Abstraction has 23050 states and 31545 transitions. [2021-11-06 18:06:26,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.5) internal successors, (270), 20 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:06:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 23050 states and 31545 transitions. [2021-11-06 18:06:26,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-06 18:06:26,444 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:06:26,444 INFO L513 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:06:26,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-06 18:06:26,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 18:06:26,668 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 18:06:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:06:26,668 INFO L85 PathProgramCache]: Analyzing trace with hash 271252464, now seen corresponding path program 1 times [2021-11-06 18:06:26,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 18:06:26,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342608716] [2021-11-06 18:06:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:06:26,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 18:06:26,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 18:06:26,680 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 18:06:26,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-06 18:06:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:06:37,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 4275 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-06 18:06:37,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:06:40,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 11 [2021-11-06 18:06:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-06 18:06:54,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 18:07:02,686 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 18:07:02,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 51 [2021-11-06 18:07:04,846 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 18:07:04,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2021-11-06 18:07:05,096 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-06 18:07:05,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 49 [2021-11-06 18:07:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-06 18:07:09,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 18:07:09,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342608716] [2021-11-06 18:07:09,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342608716] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:09,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:09,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 15 [2021-11-06 18:07:09,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188394729] [2021-11-06 18:07:09,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 18:07:09,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 18:07:09,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 18:07:09,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=169, Unknown=4, NotChecked=0, Total=210 [2021-11-06 18:07:09,417 INFO L87 Difference]: Start difference. First operand 23050 states and 31545 transitions. Second operand has 15 states, 15 states have (on average 15.8) internal successors, (237), 15 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15