./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.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 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:10:02,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:10:02,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:10:02,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:10:02,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:10:02,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:10:02,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:10:02,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:10:02,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:10:02,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:10:02,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:10:02,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:10:02,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:10:02,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:10:02,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:10:02,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:10:02,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:10:02,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:10:02,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:10:02,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:10:02,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:10:02,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:10:02,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:10:02,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:10:02,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:10:02,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:10:02,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:10:02,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:10:02,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:10:02,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:10:02,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:10:02,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:10:02,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:10:02,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:10:02,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:10:02,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:10:02,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:10:02,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:10:02,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:10:02,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:10:02,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:10:02,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:10:02,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:10:02,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:10:02,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:10:02,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:10:02,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:10:02,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:10:02,573 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:10:02,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:10:02,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:10:02,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:10:02,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:10:02,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:10:02,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:10:02,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:10:02,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:10:02,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:10:02,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:10:02,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:10:02,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:10:02,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:10:02,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:10:02,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:10:02,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:10:02,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:10:02,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:10:02,575 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:10:02,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:10:02,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:10:02,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:10:02,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3760bd11965082d9ea48923d727f263a9d5646ba9eaff63a7884fbc3852defe0 [2021-11-06 18:10:02,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:10:02,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:10:02,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:10:02,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:10:02,780 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:10:02,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2021-11-06 18:10:02,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31f5c3622/6b41ea99675e4b41af802781f7ab9264/FLAGfb6782a55 [2021-11-06 18:10:03,488 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:10:03,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2021-11-06 18:10:03,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31f5c3622/6b41ea99675e4b41af802781f7ab9264/FLAGfb6782a55 [2021-11-06 18:10:03,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31f5c3622/6b41ea99675e4b41af802781f7ab9264 [2021-11-06 18:10:03,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:10:03,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:10:03,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:10:03,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:10:03,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:10:03,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:10:03" (1/1) ... [2021-11-06 18:10:03,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f23e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:03, skipping insertion in model container [2021-11-06 18:10:03,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:10:03" (1/1) ... [2021-11-06 18:10:03,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:10:03,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:10:05,487 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2021-11-06 18:10:05,490 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2021-11-06 18:10:05,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:10:05,565 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:10:05,830 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[328915,328928] [2021-11-06 18:10:05,831 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i[329060,329073] [2021-11-06 18:10:05,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:10:06,022 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:10:06,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06 WrapperNode [2021-11-06 18:10:06,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:10:06,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:10:06,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:10:06,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:10:06,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06" (1/1) ... [2021-11-06 18:10:06,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06" (1/1) ... [2021-11-06 18:10:06,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:10:06,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:10:06,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:10:06,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:10:06,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06" (1/1) ... [2021-11-06 18:10:06,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06" (1/1) ... [2021-11-06 18:10:06,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06" (1/1) ... [2021-11-06 18:10:06,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06" (1/1) ... [2021-11-06 18:10:07,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06" (1/1) ... [2021-11-06 18:10:07,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06" (1/1) ... [2021-11-06 18:10:07,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06" (1/1) ... [2021-11-06 18:10:07,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:10:07,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:10:07,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:10:07,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:10:07,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06" (1/1) ... [2021-11-06 18:10:07,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:10:07,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:07,416 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 18:10:07,417 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 18:10:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:10:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:10:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:10:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:10:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:10:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:10:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 18:10:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:10:07,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:10:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:10:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:10:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 18:10:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:10:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:10:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:10:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:10:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:10:31,903 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:10:31,903 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:10:31,904 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:10:31,904 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:10:31,904 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:10:31,904 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:10:31,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:10:31,936 INFO L299 CfgBuilder]: Removed 4397 assume(true) statements. [2021-11-06 18:10:31,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:10:31 BoogieIcfgContainer [2021-11-06 18:10:31,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:10:31,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:10:31,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:10:31,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:10:31,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:10:03" (1/3) ... [2021-11-06 18:10:31,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2b4c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:10:31, skipping insertion in model container [2021-11-06 18:10:31,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:10:06" (2/3) ... [2021-11-06 18:10:31,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2b4c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:10:31, skipping insertion in model container [2021-11-06 18:10:31,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:10:31" (3/3) ... [2021-11-06 18:10:31,947 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-winbond-840.cil.i [2021-11-06 18:10:31,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:10:31,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-06 18:10:31,996 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:10:32,000 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 18:10:32,001 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-06 18:10:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 3863 states, 3855 states have (on average 1.3156939040207523) internal successors, (5072), 3862 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states 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 18:10:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 18:10:32,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:32,073 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] [2021-11-06 18:10:32,073 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:10:32,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:32,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1508043732, now seen corresponding path program 1 times [2021-11-06 18:10:32,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:32,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524311242] [2021-11-06 18:10:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:32,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:32,781 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 18:10:32,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:32,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524311242] [2021-11-06 18:10:32,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524311242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:32,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:32,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:32,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355621511] [2021-11-06 18:10:32,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:32,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:32,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:32,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:32,814 INFO L87 Difference]: Start difference. First operand has 3863 states, 3855 states have (on average 1.3156939040207523) internal successors, (5072), 3862 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 18:10:35,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:35,412 INFO L93 Difference]: Finished difference Result 10779 states and 14115 transitions. [2021-11-06 18:10:35,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:35,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-06 18:10:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:35,458 INFO L225 Difference]: With dead ends: 10779 [2021-11-06 18:10:35,458 INFO L226 Difference]: Without dead ends: 6671 [2021-11-06 18:10:35,472 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 18:10:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6671 states. [2021-11-06 18:10:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6671 to 6496. [2021-11-06 18:10:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6496 states, 6488 states have (on average 1.2763563501849569) internal successors, (8281), 6495 states have internal predecessors, (8281), 0 states have call successors, (0), 0 states 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 18:10:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6496 states to 6496 states and 8281 transitions. [2021-11-06 18:10:35,701 INFO L78 Accepts]: Start accepts. Automaton has 6496 states and 8281 transitions. Word has length 60 [2021-11-06 18:10:35,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:35,702 INFO L470 AbstractCegarLoop]: Abstraction has 6496 states and 8281 transitions. [2021-11-06 18:10:35,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 18:10:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6496 states and 8281 transitions. [2021-11-06 18:10:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 18:10:35,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:35,714 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] [2021-11-06 18:10:35,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:10:35,715 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:10:35,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1589939729, now seen corresponding path program 1 times [2021-11-06 18:10:35,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:35,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544511901] [2021-11-06 18:10:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:35,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:36,118 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 18:10:36,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:36,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544511901] [2021-11-06 18:10:36,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544511901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:36,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:36,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:36,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102024713] [2021-11-06 18:10:36,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:36,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:36,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:36,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:36,125 INFO L87 Difference]: Start difference. First operand 6496 states and 8281 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 18:10:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:38,744 INFO L93 Difference]: Finished difference Result 15026 states and 19212 transitions. [2021-11-06 18:10:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:38,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-06 18:10:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:38,777 INFO L225 Difference]: With dead ends: 15026 [2021-11-06 18:10:38,777 INFO L226 Difference]: Without dead ends: 8598 [2021-11-06 18:10:38,793 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 18:10:38,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8598 states. [2021-11-06 18:10:38,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8598 to 8584. [2021-11-06 18:10:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8584 states, 8576 states have (on average 1.2784514925373134) internal successors, (10964), 8583 states have internal predecessors, (10964), 0 states have call successors, (0), 0 states 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 18:10:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8584 states to 8584 states and 10964 transitions. [2021-11-06 18:10:39,010 INFO L78 Accepts]: Start accepts. Automaton has 8584 states and 10964 transitions. Word has length 67 [2021-11-06 18:10:39,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:39,013 INFO L470 AbstractCegarLoop]: Abstraction has 8584 states and 10964 transitions. [2021-11-06 18:10:39,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 18:10:39,013 INFO L276 IsEmpty]: Start isEmpty. Operand 8584 states and 10964 transitions. [2021-11-06 18:10:39,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 18:10:39,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:39,017 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] [2021-11-06 18:10:39,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:10:39,017 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:10:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:39,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1381844700, now seen corresponding path program 1 times [2021-11-06 18:10:39,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:39,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850366643] [2021-11-06 18:10:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:39,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:39,275 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 18:10:39,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:39,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850366643] [2021-11-06 18:10:39,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850366643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:39,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:39,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:39,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714813722] [2021-11-06 18:10:39,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:39,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:39,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:39,278 INFO L87 Difference]: Start difference. First operand 8584 states and 10964 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 18:10:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:41,965 INFO L93 Difference]: Finished difference Result 23010 states and 29439 transitions. [2021-11-06 18:10:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:41,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-06 18:10:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:42,038 INFO L225 Difference]: With dead ends: 23010 [2021-11-06 18:10:42,038 INFO L226 Difference]: Without dead ends: 14494 [2021-11-06 18:10:42,056 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 18:10:42,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14494 states. [2021-11-06 18:10:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14494 to 14210. [2021-11-06 18:10:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14210 states, 14202 states have (on average 1.2810871708210112) internal successors, (18194), 14209 states have internal predecessors, (18194), 0 states have call successors, (0), 0 states 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 18:10:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14210 states to 14210 states and 18194 transitions. [2021-11-06 18:10:42,580 INFO L78 Accepts]: Start accepts. Automaton has 14210 states and 18194 transitions. Word has length 75 [2021-11-06 18:10:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:42,582 INFO L470 AbstractCegarLoop]: Abstraction has 14210 states and 18194 transitions. [2021-11-06 18:10:42,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 18:10:42,583 INFO L276 IsEmpty]: Start isEmpty. Operand 14210 states and 18194 transitions. [2021-11-06 18:10:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 18:10:42,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:42,587 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] [2021-11-06 18:10:42,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:10:42,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:10:42,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:42,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1681614129, now seen corresponding path program 1 times [2021-11-06 18:10:42,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:42,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907465901] [2021-11-06 18:10:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:42,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:42,872 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 18:10:42,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:42,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907465901] [2021-11-06 18:10:42,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907465901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:42,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:42,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:42,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929068870] [2021-11-06 18:10:42,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:42,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:42,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:42,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:42,879 INFO L87 Difference]: Start difference. First operand 14210 states and 18194 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 18:10:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:45,548 INFO L93 Difference]: Finished difference Result 31252 states and 40105 transitions. [2021-11-06 18:10:45,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:45,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-06 18:10:45,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:45,590 INFO L225 Difference]: With dead ends: 31252 [2021-11-06 18:10:45,590 INFO L226 Difference]: Without dead ends: 17110 [2021-11-06 18:10:45,619 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 18:10:45,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17110 states. [2021-11-06 18:10:45,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17110 to 17088. [2021-11-06 18:10:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17088 states, 17080 states have (on average 1.282903981264637) internal successors, (21912), 17087 states have internal predecessors, (21912), 0 states have call successors, (0), 0 states 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 18:10:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17088 states to 17088 states and 21912 transitions. [2021-11-06 18:10:45,990 INFO L78 Accepts]: Start accepts. Automaton has 17088 states and 21912 transitions. Word has length 95 [2021-11-06 18:10:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:45,992 INFO L470 AbstractCegarLoop]: Abstraction has 17088 states and 21912 transitions. [2021-11-06 18:10:45,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 18:10:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 17088 states and 21912 transitions. [2021-11-06 18:10:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-06 18:10:45,999 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:45,999 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:45,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:10:46,000 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:10:46,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash -507623943, now seen corresponding path program 1 times [2021-11-06 18:10:46,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:46,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772218995] [2021-11-06 18:10:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:46,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:10:46,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:46,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772218995] [2021-11-06 18:10:46,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772218995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:46,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:46,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:46,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518291415] [2021-11-06 18:10:46,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:46,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:46,323 INFO L87 Difference]: Start difference. First operand 17088 states and 21912 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:49,019 INFO L93 Difference]: Finished difference Result 37000 states and 47525 transitions. [2021-11-06 18:10:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:49,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-06 18:10:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:49,061 INFO L225 Difference]: With dead ends: 37000 [2021-11-06 18:10:49,062 INFO L226 Difference]: Without dead ends: 19980 [2021-11-06 18:10:49,096 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 18:10:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19980 states. [2021-11-06 18:10:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19980 to 19958. [2021-11-06 18:10:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19958 states, 19950 states have (on average 1.2839097744360903) internal successors, (25614), 19957 states have internal predecessors, (25614), 0 states have call successors, (0), 0 states 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 18:10:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19958 states to 19958 states and 25614 transitions. [2021-11-06 18:10:49,528 INFO L78 Accepts]: Start accepts. Automaton has 19958 states and 25614 transitions. Word has length 132 [2021-11-06 18:10:49,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:49,529 INFO L470 AbstractCegarLoop]: Abstraction has 19958 states and 25614 transitions. [2021-11-06 18:10:49,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 19958 states and 25614 transitions. [2021-11-06 18:10:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-06 18:10:49,536 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:49,536 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:49,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:10:49,537 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:10:49,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:49,538 INFO L85 PathProgramCache]: Analyzing trace with hash 864183355, now seen corresponding path program 1 times [2021-11-06 18:10:49,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:49,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126293175] [2021-11-06 18:10:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:49,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:10:49,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:49,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126293175] [2021-11-06 18:10:49,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126293175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:49,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:49,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:49,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248459646] [2021-11-06 18:10:49,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:49,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:49,762 INFO L87 Difference]: Start difference. First operand 19958 states and 25614 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:52,411 INFO L93 Difference]: Finished difference Result 42728 states and 54905 transitions. [2021-11-06 18:10:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:52,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-06 18:10:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:52,458 INFO L225 Difference]: With dead ends: 42728 [2021-11-06 18:10:52,459 INFO L226 Difference]: Without dead ends: 22838 [2021-11-06 18:10:52,498 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 18:10:52,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22838 states. [2021-11-06 18:10:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22838 to 22816. [2021-11-06 18:10:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22816 states, 22808 states have (on average 1.2848123465450718) internal successors, (29304), 22815 states have internal predecessors, (29304), 0 states have call successors, (0), 0 states 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 18:10:52,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22816 states to 22816 states and 29304 transitions. [2021-11-06 18:10:52,935 INFO L78 Accepts]: Start accepts. Automaton has 22816 states and 29304 transitions. Word has length 132 [2021-11-06 18:10:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:52,935 INFO L470 AbstractCegarLoop]: Abstraction has 22816 states and 29304 transitions. [2021-11-06 18:10:52,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:52,937 INFO L276 IsEmpty]: Start isEmpty. Operand 22816 states and 29304 transitions. [2021-11-06 18:10:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-06 18:10:52,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:52,945 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:52,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:10:52,946 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:10:52,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:52,946 INFO L85 PathProgramCache]: Analyzing trace with hash -46491050, now seen corresponding path program 1 times [2021-11-06 18:10:52,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:52,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629355076] [2021-11-06 18:10:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:52,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:10:53,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:53,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629355076] [2021-11-06 18:10:53,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629355076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:53,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:53,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:53,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461351349] [2021-11-06 18:10:53,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:53,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:53,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:53,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:53,193 INFO L87 Difference]: Start difference. First operand 22816 states and 29304 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:55,853 INFO L93 Difference]: Finished difference Result 48448 states and 62293 transitions. [2021-11-06 18:10:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:55,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-11-06 18:10:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:55,903 INFO L225 Difference]: With dead ends: 48448 [2021-11-06 18:10:55,904 INFO L226 Difference]: Without dead ends: 25700 [2021-11-06 18:10:55,941 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 18:10:55,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25700 states. [2021-11-06 18:10:56,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25700 to 25678. [2021-11-06 18:10:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25678 states, 25670 states have (on average 1.2854694195559018) internal successors, (32998), 25677 states have internal predecessors, (32998), 0 states have call successors, (0), 0 states 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 18:10:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25678 states to 25678 states and 32998 transitions. [2021-11-06 18:10:56,384 INFO L78 Accepts]: Start accepts. Automaton has 25678 states and 32998 transitions. Word has length 168 [2021-11-06 18:10:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:56,384 INFO L470 AbstractCegarLoop]: Abstraction has 25678 states and 32998 transitions. [2021-11-06 18:10:56,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 25678 states and 32998 transitions. [2021-11-06 18:10:56,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-06 18:10:56,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:56,390 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:56,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:10:56,390 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:10:56,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:56,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1418298348, now seen corresponding path program 1 times [2021-11-06 18:10:56,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:56,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840239884] [2021-11-06 18:10:56,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:56,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:10:56,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:56,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840239884] [2021-11-06 18:10:56,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840239884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:56,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:56,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:56,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627038928] [2021-11-06 18:10:56,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:56,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:56,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:56,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:56,725 INFO L87 Difference]: Start difference. First operand 25678 states and 32998 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:59,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:59,426 INFO L93 Difference]: Finished difference Result 54176 states and 69689 transitions. [2021-11-06 18:10:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:59,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-11-06 18:10:59,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:59,486 INFO L225 Difference]: With dead ends: 54176 [2021-11-06 18:10:59,486 INFO L226 Difference]: Without dead ends: 28566 [2021-11-06 18:10:59,533 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 18:10:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28566 states. [2021-11-06 18:10:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28566 to 28544. [2021-11-06 18:10:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28544 states, 28536 states have (on average 1.2859545836837678) internal successors, (36696), 28543 states have internal predecessors, (36696), 0 states have call successors, (0), 0 states 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 18:11:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28544 states to 28544 states and 36696 transitions. [2021-11-06 18:11:00,024 INFO L78 Accepts]: Start accepts. Automaton has 28544 states and 36696 transitions. Word has length 168 [2021-11-06 18:11:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:00,024 INFO L470 AbstractCegarLoop]: Abstraction has 28544 states and 36696 transitions. [2021-11-06 18:11:00,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:11:00,025 INFO L276 IsEmpty]: Start isEmpty. Operand 28544 states and 36696 transitions. [2021-11-06 18:11:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-06 18:11:00,031 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:00,031 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 18:11:00,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 18:11:00,031 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1501729667, now seen corresponding path program 1 times [2021-11-06 18:11:00,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:00,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611225658] [2021-11-06 18:11:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:00,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-06 18:11:00,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:00,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611225658] [2021-11-06 18:11:00,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611225658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:00,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:00,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:00,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50939616] [2021-11-06 18:11:00,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:00,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:00,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:00,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:00,361 INFO L87 Difference]: Start difference. First operand 28544 states and 36696 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 18:11:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:00,883 INFO L93 Difference]: Finished difference Result 57092 states and 73424 transitions. [2021-11-06 18:11:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:00,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-11-06 18:11:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:00,943 INFO L225 Difference]: With dead ends: 57092 [2021-11-06 18:11:00,943 INFO L226 Difference]: Without dead ends: 28616 [2021-11-06 18:11:00,996 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 18:11:01,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2021-11-06 18:11:01,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 28580. [2021-11-06 18:11:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2855942881142377) internal successors, (36732), 28579 states have internal predecessors, (36732), 0 states have call successors, (0), 0 states 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 18:11:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36732 transitions. [2021-11-06 18:11:01,555 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36732 transitions. Word has length 195 [2021-11-06 18:11:01,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:01,556 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36732 transitions. [2021-11-06 18:11:01,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 18:11:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36732 transitions. [2021-11-06 18:11:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-06 18:11:01,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:01,563 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 18:11:01,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 18:11:01,563 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:01,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:01,564 INFO L85 PathProgramCache]: Analyzing trace with hash -25965181, now seen corresponding path program 1 times [2021-11-06 18:11:01,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:01,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878463045] [2021-11-06 18:11:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:01,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-06 18:11:01,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:01,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878463045] [2021-11-06 18:11:01,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878463045] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 18:11:01,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500664938] [2021-11-06 18:11:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:01,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:01,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:11:01,924 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 18:11:01,951 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 18:11:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:03,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 3504 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:11:03,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:11:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-06 18:11:04,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500664938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:04,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 18:11:04,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 18:11:04,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541053046] [2021-11-06 18:11:04,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:04,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:04,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:04,435 INFO L87 Difference]: Start difference. First operand 28580 states and 36732 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 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 18:11:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:04,842 INFO L93 Difference]: Finished difference Result 57092 states and 73388 transitions. [2021-11-06 18:11:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:04,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 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 199 [2021-11-06 18:11:04,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:04,884 INFO L225 Difference]: With dead ends: 57092 [2021-11-06 18:11:04,884 INFO L226 Difference]: Without dead ends: 28580 [2021-11-06 18:11:04,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:04,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-06 18:11:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-06 18:11:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2834243315133698) internal successors, (36670), 28579 states have internal predecessors, (36670), 0 states have call successors, (0), 0 states 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 18:11:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36670 transitions. [2021-11-06 18:11:05,502 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36670 transitions. Word has length 199 [2021-11-06 18:11:05,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:05,502 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36670 transitions. [2021-11-06 18:11:05,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 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 18:11:05,502 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36670 transitions. [2021-11-06 18:11:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-06 18:11:05,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:05,509 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 18:11:05,536 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 18:11:05,723 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,SelfDestructingSolverStorable9 [2021-11-06 18:11:05,723 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:05,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:05,724 INFO L85 PathProgramCache]: Analyzing trace with hash -804680180, now seen corresponding path program 1 times [2021-11-06 18:11:05,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:05,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687116210] [2021-11-06 18:11:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:05,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-06 18:11:05,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:05,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687116210] [2021-11-06 18:11:05,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687116210] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 18:11:05,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121440936] [2021-11-06 18:11:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:05,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:05,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:11:05,958 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 18:11:05,961 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 18:11:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:07,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 3505 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:11:07,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:11:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-06 18:11:08,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121440936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:08,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 18:11:08,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 18:11:08,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915738026] [2021-11-06 18:11:08,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:08,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:08,557 INFO L87 Difference]: Start difference. First operand 28580 states and 36670 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 18:11:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:09,196 INFO L93 Difference]: Finished difference Result 57092 states and 73264 transitions. [2021-11-06 18:11:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:09,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 200 [2021-11-06 18:11:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:09,237 INFO L225 Difference]: With dead ends: 57092 [2021-11-06 18:11:09,237 INFO L226 Difference]: Without dead ends: 28580 [2021-11-06 18:11:09,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-06 18:11:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-06 18:11:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2812543749125018) internal successors, (36608), 28579 states have internal predecessors, (36608), 0 states have call successors, (0), 0 states 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 18:11:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36608 transitions. [2021-11-06 18:11:09,774 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36608 transitions. Word has length 200 [2021-11-06 18:11:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:09,775 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36608 transitions. [2021-11-06 18:11:09,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 18:11:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36608 transitions. [2021-11-06 18:11:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-06 18:11:09,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:09,782 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:11:09,816 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 18:11:10,007 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,SelfDestructingSolverStorable10 [2021-11-06 18:11:10,008 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:10,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:10,008 INFO L85 PathProgramCache]: Analyzing trace with hash 825107582, now seen corresponding path program 1 times [2021-11-06 18:11:10,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:10,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762171114] [2021-11-06 18:11:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:10,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-06 18:11:10,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:10,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762171114] [2021-11-06 18:11:10,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762171114] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 18:11:10,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983773432] [2021-11-06 18:11:10,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:10,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:10,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:11:10,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:11:10,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 18:11:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:11,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 3506 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:11:11,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:11:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-06 18:11:12,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983773432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:12,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 18:11:12,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 18:11:12,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699220142] [2021-11-06 18:11:12,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:12,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:12,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:12,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:12,723 INFO L87 Difference]: Start difference. First operand 28580 states and 36608 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 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 18:11:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:13,197 INFO L93 Difference]: Finished difference Result 57092 states and 73140 transitions. [2021-11-06 18:11:13,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:13,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 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 201 [2021-11-06 18:11:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:13,237 INFO L225 Difference]: With dead ends: 57092 [2021-11-06 18:11:13,238 INFO L226 Difference]: Without dead ends: 28580 [2021-11-06 18:11:13,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:13,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-06 18:11:13,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-06 18:11:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2790844183116337) internal successors, (36546), 28579 states have internal predecessors, (36546), 0 states have call successors, (0), 0 states 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 18:11:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36546 transitions. [2021-11-06 18:11:13,928 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36546 transitions. Word has length 201 [2021-11-06 18:11:13,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:13,928 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36546 transitions. [2021-11-06 18:11:13,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 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 18:11:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36546 transitions. [2021-11-06 18:11:13,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-06 18:11:13,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:13,934 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 18:11:13,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 18:11:14,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:14,159 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:14,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:14,160 INFO L85 PathProgramCache]: Analyzing trace with hash -190930393, now seen corresponding path program 1 times [2021-11-06 18:11:14,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:14,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883006057] [2021-11-06 18:11:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:14,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-06 18:11:14,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:14,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883006057] [2021-11-06 18:11:14,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883006057] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 18:11:14,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495378095] [2021-11-06 18:11:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:14,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:14,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:11:14,373 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:11:14,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 18:11:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:15,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 3507 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:11:15,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:11:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-06 18:11:16,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495378095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:16,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 18:11:16,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 18:11:16,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94032648] [2021-11-06 18:11:16,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:16,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:16,708 INFO L87 Difference]: Start difference. First operand 28580 states and 36546 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 18:11:17,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:17,321 INFO L93 Difference]: Finished difference Result 57092 states and 73016 transitions. [2021-11-06 18:11:17,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:17,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 202 [2021-11-06 18:11:17,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:17,364 INFO L225 Difference]: With dead ends: 57092 [2021-11-06 18:11:17,364 INFO L226 Difference]: Without dead ends: 28580 [2021-11-06 18:11:17,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-06 18:11:18,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-06 18:11:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2769144617107657) internal successors, (36484), 28579 states have internal predecessors, (36484), 0 states have call successors, (0), 0 states 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 18:11:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36484 transitions. [2021-11-06 18:11:18,125 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36484 transitions. Word has length 202 [2021-11-06 18:11:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:18,126 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36484 transitions. [2021-11-06 18:11:18,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 18:11:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36484 transitions. [2021-11-06 18:11:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-06 18:11:18,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:18,131 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:11:18,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 18:11:18,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:18,355 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:18,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1623187591, now seen corresponding path program 1 times [2021-11-06 18:11:18,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:18,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792415815] [2021-11-06 18:11:18,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:18,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-06 18:11:18,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:18,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792415815] [2021-11-06 18:11:18,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792415815] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 18:11:18,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477474405] [2021-11-06 18:11:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:18,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:18,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:11:18,612 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:11:18,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 18:11:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:19,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 3508 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:11:19,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:11:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-06 18:11:21,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477474405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:21,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 18:11:21,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 18:11:21,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128295569] [2021-11-06 18:11:21,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:21,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:21,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:21,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:21,072 INFO L87 Difference]: Start difference. First operand 28580 states and 36484 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 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 18:11:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:21,768 INFO L93 Difference]: Finished difference Result 57092 states and 72892 transitions. [2021-11-06 18:11:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:21,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 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 203 [2021-11-06 18:11:21,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:21,805 INFO L225 Difference]: With dead ends: 57092 [2021-11-06 18:11:21,806 INFO L226 Difference]: Without dead ends: 28580 [2021-11-06 18:11:21,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-06 18:11:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-06 18:11:22,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2747445051098978) internal successors, (36422), 28579 states have internal predecessors, (36422), 0 states have call successors, (0), 0 states 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 18:11:22,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36422 transitions. [2021-11-06 18:11:22,505 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36422 transitions. Word has length 203 [2021-11-06 18:11:22,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:22,506 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36422 transitions. [2021-11-06 18:11:22,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 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 18:11:22,506 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36422 transitions. [2021-11-06 18:11:22,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-06 18:11:22,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:22,510 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 18:11:22,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 18:11:22,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 18:11:22,712 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:22,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:22,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1221628482, now seen corresponding path program 1 times [2021-11-06 18:11:22,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:22,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808106040] [2021-11-06 18:11:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:22,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-06 18:11:23,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:23,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808106040] [2021-11-06 18:11:23,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808106040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 18:11:23,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996845554] [2021-11-06 18:11:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:23,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:23,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:11:23,077 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:11:23,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 18:11:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:24,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 3509 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:11:24,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:11:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-06 18:11:25,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996845554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:25,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 18:11:25,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 18:11:25,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290675245] [2021-11-06 18:11:25,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:25,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:25,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:25,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:25,537 INFO L87 Difference]: Start difference. First operand 28580 states and 36422 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 18:11:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:26,455 INFO L93 Difference]: Finished difference Result 57092 states and 72768 transitions. [2021-11-06 18:11:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:26,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 204 [2021-11-06 18:11:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:26,493 INFO L225 Difference]: With dead ends: 57092 [2021-11-06 18:11:26,493 INFO L226 Difference]: Without dead ends: 28580 [2021-11-06 18:11:26,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:26,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2021-11-06 18:11:27,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 28580. [2021-11-06 18:11:27,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28580 states, 28572 states have (on average 1.2725745485090298) internal successors, (36360), 28579 states have internal predecessors, (36360), 0 states have call successors, (0), 0 states 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 18:11:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28580 states to 28580 states and 36360 transitions. [2021-11-06 18:11:27,291 INFO L78 Accepts]: Start accepts. Automaton has 28580 states and 36360 transitions. Word has length 204 [2021-11-06 18:11:27,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:27,292 INFO L470 AbstractCegarLoop]: Abstraction has 28580 states and 36360 transitions. [2021-11-06 18:11:27,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 18:11:27,292 INFO L276 IsEmpty]: Start isEmpty. Operand 28580 states and 36360 transitions. [2021-11-06 18:11:27,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-06 18:11:27,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:27,296 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 18:11:27,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 18:11:27,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 18:11:27,503 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:27,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash -783237516, now seen corresponding path program 1 times [2021-11-06 18:11:27,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:27,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744594320] [2021-11-06 18:11:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:27,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-06 18:11:27,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:27,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744594320] [2021-11-06 18:11:27,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744594320] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 18:11:27,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844138146] [2021-11-06 18:11:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:27,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:27,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:11:27,723 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:11:27,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 18:11:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:28,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 3510 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:11:28,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:11:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-06 18:11:29,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844138146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:29,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 18:11:29,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 18:11:29,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416762231] [2021-11-06 18:11:29,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:29,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:29,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:29,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:29,377 INFO L87 Difference]: Start difference. First operand 28580 states and 36360 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:11:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:30,693 INFO L93 Difference]: Finished difference Result 58132 states and 73996 transitions. [2021-11-06 18:11:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:30,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2021-11-06 18:11:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:30,735 INFO L225 Difference]: With dead ends: 58132 [2021-11-06 18:11:30,735 INFO L226 Difference]: Without dead ends: 29620 [2021-11-06 18:11:30,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:30,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29620 states. [2021-11-06 18:11:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29620 to 28632. [2021-11-06 18:11:31,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28632 states, 28624 states have (on average 1.2720793739519285) internal successors, (36412), 28631 states have internal predecessors, (36412), 0 states have call successors, (0), 0 states 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 18:11:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28632 states to 28632 states and 36412 transitions. [2021-11-06 18:11:31,592 INFO L78 Accepts]: Start accepts. Automaton has 28632 states and 36412 transitions. Word has length 205 [2021-11-06 18:11:31,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:31,592 INFO L470 AbstractCegarLoop]: Abstraction has 28632 states and 36412 transitions. [2021-11-06 18:11:31,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:11:31,592 INFO L276 IsEmpty]: Start isEmpty. Operand 28632 states and 36412 transitions. [2021-11-06 18:11:31,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-06 18:11:31,597 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:31,597 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 18:11:31,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 18:11:31,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:31,815 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:31,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash 222121146, now seen corresponding path program 1 times [2021-11-06 18:11:31,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:31,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909109518] [2021-11-06 18:11:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:31,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:11:32,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:32,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909109518] [2021-11-06 18:11:32,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909109518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:32,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:32,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:11:32,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008213824] [2021-11-06 18:11:32,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:11:32,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:32,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:11:32,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:11:32,248 INFO L87 Difference]: Start difference. First operand 28632 states and 36412 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 18:11:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:36,447 INFO L93 Difference]: Finished difference Result 88532 states and 112637 transitions. [2021-11-06 18:11:36,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:11:36,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 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 210 [2021-11-06 18:11:36,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:36,538 INFO L225 Difference]: With dead ends: 88532 [2021-11-06 18:11:36,538 INFO L226 Difference]: Without dead ends: 59968 [2021-11-06 18:11:36,575 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 18:11:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59968 states. [2021-11-06 18:11:37,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59968 to 31478. [2021-11-06 18:11:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31478 states, 31470 states have (on average 1.272767715284398) internal successors, (40054), 31477 states have internal predecessors, (40054), 0 states have call successors, (0), 0 states 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 18:11:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31478 states to 31478 states and 40054 transitions. [2021-11-06 18:11:37,782 INFO L78 Accepts]: Start accepts. Automaton has 31478 states and 40054 transitions. Word has length 210 [2021-11-06 18:11:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:37,782 INFO L470 AbstractCegarLoop]: Abstraction has 31478 states and 40054 transitions. [2021-11-06 18:11:37,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 18:11:37,782 INFO L276 IsEmpty]: Start isEmpty. Operand 31478 states and 40054 transitions. [2021-11-06 18:11:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-06 18:11:37,788 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:37,788 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:11:37,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 18:11:37,788 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:37,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:37,789 INFO L85 PathProgramCache]: Analyzing trace with hash -129455417, now seen corresponding path program 1 times [2021-11-06 18:11:37,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:37,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641301665] [2021-11-06 18:11:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:37,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:11:38,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:38,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641301665] [2021-11-06 18:11:38,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641301665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:38,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:38,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:11:38,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103589193] [2021-11-06 18:11:38,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:11:38,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:38,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:11:38,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:11:38,038 INFO L87 Difference]: Start difference. First operand 31478 states and 40054 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 18:11:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:42,458 INFO L93 Difference]: Finished difference Result 94244 states and 119961 transitions. [2021-11-06 18:11:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:11:42,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 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 211 [2021-11-06 18:11:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:42,555 INFO L225 Difference]: With dead ends: 94244 [2021-11-06 18:11:42,555 INFO L226 Difference]: Without dead ends: 62834 [2021-11-06 18:11:42,594 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 18:11:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62834 states. [2021-11-06 18:11:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62834 to 34344. [2021-11-06 18:11:43,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34344 states, 34336 states have (on average 1.2731826654240448) internal successors, (43716), 34343 states have internal predecessors, (43716), 0 states have call successors, (0), 0 states 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 18:11:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34344 states to 34344 states and 43716 transitions. [2021-11-06 18:11:44,021 INFO L78 Accepts]: Start accepts. Automaton has 34344 states and 43716 transitions. Word has length 211 [2021-11-06 18:11:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:44,022 INFO L470 AbstractCegarLoop]: Abstraction has 34344 states and 43716 transitions. [2021-11-06 18:11:44,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 18:11:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 34344 states and 43716 transitions. [2021-11-06 18:11:44,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-06 18:11:44,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:44,027 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:11:44,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 18:11:44,027 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash -506343653, now seen corresponding path program 1 times [2021-11-06 18:11:44,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:44,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112823658] [2021-11-06 18:11:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:44,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:11:44,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:44,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112823658] [2021-11-06 18:11:44,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112823658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:44,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:44,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:11:44,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493322113] [2021-11-06 18:11:44,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:11:44,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:44,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:11:44,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:11:44,243 INFO L87 Difference]: Start difference. First operand 34344 states and 43716 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 18:11:48,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:48,988 INFO L93 Difference]: Finished difference Result 99972 states and 127289 transitions. [2021-11-06 18:11:48,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:11:48,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 212 [2021-11-06 18:11:48,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:49,087 INFO L225 Difference]: With dead ends: 99972 [2021-11-06 18:11:49,087 INFO L226 Difference]: Without dead ends: 65696 [2021-11-06 18:11:49,146 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 18:11:49,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65696 states. [2021-11-06 18:11:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65696 to 37206. [2021-11-06 18:11:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37206 states, 37198 states have (on average 1.2735630947900425) internal successors, (47374), 37205 states have internal predecessors, (47374), 0 states have call successors, (0), 0 states 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 18:11:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37206 states to 37206 states and 47374 transitions. [2021-11-06 18:11:50,641 INFO L78 Accepts]: Start accepts. Automaton has 37206 states and 47374 transitions. Word has length 212 [2021-11-06 18:11:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:50,641 INFO L470 AbstractCegarLoop]: Abstraction has 37206 states and 47374 transitions. [2021-11-06 18:11:50,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 18:11:50,641 INFO L276 IsEmpty]: Start isEmpty. Operand 37206 states and 47374 transitions. [2021-11-06 18:11:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-06 18:11:50,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:50,646 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-06 18:11:50,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 18:11:50,647 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:50,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:50,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1999778892, now seen corresponding path program 1 times [2021-11-06 18:11:50,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:50,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207440170] [2021-11-06 18:11:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:50,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-06 18:11:50,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:50,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207440170] [2021-11-06 18:11:50,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207440170] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 18:11:50,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755721505] [2021-11-06 18:11:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:50,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:50,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:11:50,882 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:11:50,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 18:11:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:52,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 3537 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:11:52,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:11:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-06 18:11:52,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755721505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:52,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 18:11:52,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 18:11:52,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280350296] [2021-11-06 18:11:52,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:52,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:52,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:52,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:52,606 INFO L87 Difference]: Start difference. First operand 37206 states and 47374 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 18:11:54,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:54,713 INFO L93 Difference]: Finished difference Result 76396 states and 97358 transitions. [2021-11-06 18:11:54,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:54,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 213 [2021-11-06 18:11:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:54,768 INFO L225 Difference]: With dead ends: 76396 [2021-11-06 18:11:54,768 INFO L226 Difference]: Without dead ends: 39258 [2021-11-06 18:11:54,815 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:54,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39258 states. [2021-11-06 18:11:56,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39258 to 37326. [2021-11-06 18:11:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37326 states, 37318 states have (on average 1.2726834235489577) internal successors, (47494), 37325 states have internal predecessors, (47494), 0 states have call successors, (0), 0 states 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 18:11:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37326 states to 37326 states and 47494 transitions. [2021-11-06 18:11:56,187 INFO L78 Accepts]: Start accepts. Automaton has 37326 states and 47494 transitions. Word has length 213 [2021-11-06 18:11:56,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:56,188 INFO L470 AbstractCegarLoop]: Abstraction has 37326 states and 47494 transitions. [2021-11-06 18:11:56,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 18:11:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 37326 states and 47494 transitions. [2021-11-06 18:11:56,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-06 18:11:56,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:56,193 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:11:56,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 18:11:56,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:56,395 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:11:56,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:56,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1018066352, now seen corresponding path program 1 times [2021-11-06 18:11:56,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:56,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874293288] [2021-11-06 18:11:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:56,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-06 18:11:56,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:56,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874293288] [2021-11-06 18:11:56,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874293288] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 18:11:56,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651024645] [2021-11-06 18:11:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:56,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:56,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:11:56,595 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:11:56,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 18:11:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:58,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 3547 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 18:11:58,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:11:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-06 18:11:58,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651024645] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 18:11:58,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 18:11:58,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 18:11:58,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019769002] [2021-11-06 18:11:58,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 18:11:58,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 18:11:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:11:58,669 INFO L87 Difference]: Start difference. First operand 37326 states and 47494 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)