./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-atheros-atl1e-atl1e.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-atheros-atl1e-atl1e.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 cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:08:10,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:08:10,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:08:10,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:08:10,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:08:10,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:08:10,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:08:10,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:08:10,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:08:10,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:08:10,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:08:10,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:08:10,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:08:10,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:08:10,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:08:10,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:08:10,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:08:10,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:08:10,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:08:10,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:08:10,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:08:10,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:08:10,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:08:10,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:08:10,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:08:10,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:08:10,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:08:10,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:08:10,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:08:10,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:08:10,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:08:10,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:08:10,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:08:10,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:08:10,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:08:10,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:08:10,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:08:10,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:08:10,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:08:10,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:08:10,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:08:10,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:08:10,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:08:10,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:08:10,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:08:10,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:08:10,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:08:10,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:08:10,673 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:08:10,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:08:10,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:08:10,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:08:10,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:08:10,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:08:10,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:08:10,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:08:10,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:08:10,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:08:10,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:08:10,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:08:10,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:08:10,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:08:10,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:08:10,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:08:10,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:08:10,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:08:10,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:08:10,676 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:08:10,676 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:08:10,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:08:10,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:08:10,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 [2021-11-06 18:08:10,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:08:10,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:08:10,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:08:10,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:08:10,860 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:08:10,861 INFO L432 ainManager$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-atheros-atl1e-atl1e.cil.i [2021-11-06 18:08:10,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61eee75a/047f297ea48443338df01736c8fc4557/FLAGdaaf257ea [2021-11-06 18:08:11,582 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:08:11,583 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-atheros-atl1e-atl1e.cil.i [2021-11-06 18:08:11,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61eee75a/047f297ea48443338df01736c8fc4557/FLAGdaaf257ea [2021-11-06 18:08:11,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61eee75a/047f297ea48443338df01736c8fc4557 [2021-11-06 18:08:11,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:08:11,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:08:11,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:08:11,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:08:11,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:08:11,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:08:11" (1/1) ... [2021-11-06 18:08:11,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3373c1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:11, skipping insertion in model container [2021-11-06 18:08:11,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:08:11" (1/1) ... [2021-11-06 18:08:11,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:08:12,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:08:14,803 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-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-11-06 18:08:14,806 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-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-11-06 18:08:14,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:08:14,874 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:08:15,187 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-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-11-06 18:08:15,187 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-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-11-06 18:08:15,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:08:15,376 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:08:15,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15 WrapperNode [2021-11-06 18:08:15,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:08:15,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:08:15,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:08:15,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:08:15,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15" (1/1) ... [2021-11-06 18:08:15,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15" (1/1) ... [2021-11-06 18:08:16,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:08:16,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:08:16,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:08:16,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:08:16,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15" (1/1) ... [2021-11-06 18:08:16,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15" (1/1) ... [2021-11-06 18:08:16,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15" (1/1) ... [2021-11-06 18:08:16,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15" (1/1) ... [2021-11-06 18:08:16,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15" (1/1) ... [2021-11-06 18:08:17,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15" (1/1) ... [2021-11-06 18:08:17,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15" (1/1) ... [2021-11-06 18:08:17,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:08:17,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:08:17,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:08:17,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:08:17,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15" (1/1) ... [2021-11-06 18:08:17,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:08:17,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:08:17,322 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 18:08:17,347 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 18:08:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:08:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:08:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:08:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:08:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:08:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:08:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 18:08:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:08:17,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:08:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:08:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:08:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:08:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:08:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:08:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:08:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:09:18,681 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:09:18,681 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:09:18,682 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:09:18,683 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:09:18,683 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:09:18,685 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:09:18,713 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:09:18,713 INFO L299 CfgBuilder]: Removed 8216 assume(true) statements. [2021-11-06 18:09:18,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:09:18 BoogieIcfgContainer [2021-11-06 18:09:18,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:09:18,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:09:18,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:09:18,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:09:18,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:08:11" (1/3) ... [2021-11-06 18:09:18,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d81f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:09:18, skipping insertion in model container [2021-11-06 18:09:18,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:08:15" (2/3) ... [2021-11-06 18:09:18,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d81f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:09:18, skipping insertion in model container [2021-11-06 18:09:18,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:09:18" (3/3) ... [2021-11-06 18:09:18,724 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-06 18:09:18,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:09:18,728 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 18:09:18,774 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:09:18,777 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 18:09:18,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 18:09:18,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 7725 states, 7720 states have (on average 1.3373056994818653) internal successors, (10324), 7724 states have internal predecessors, (10324), 0 states have call successors, (0), 0 states 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 18:09:18,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 18:09:18,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:09:18,870 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:09:18,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:09:18,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:09:18,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1331870173, now seen corresponding path program 1 times [2021-11-06 18:09:18,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:09:18,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431470198] [2021-11-06 18:09:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:18,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:09:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:09:19,502 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 18:09:19,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:09:19,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431470198] [2021-11-06 18:09:19,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431470198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:09:19,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:09:19,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:09:19,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042060781] [2021-11-06 18:09:19,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:09:19,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:09:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:09:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:09:19,531 INFO L87 Difference]: Start difference. First operand has 7725 states, 7720 states have (on average 1.3373056994818653) internal successors, (10324), 7724 states have internal predecessors, (10324), 0 states have call successors, (0), 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 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:09:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:09:22,649 INFO L93 Difference]: Finished difference Result 20247 states and 27074 transitions. [2021-11-06 18:09:22,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:09:22,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 18:09:22,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:09:22,709 INFO L225 Difference]: With dead ends: 20247 [2021-11-06 18:09:22,709 INFO L226 Difference]: Without dead ends: 12303 [2021-11-06 18:09:22,731 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 18:09:22,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12303 states. [2021-11-06 18:09:22,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12303 to 12069. [2021-11-06 18:09:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12069 states, 12064 states have (on average 1.3204575596816976) internal successors, (15930), 12068 states have internal predecessors, (15930), 0 states have call successors, (0), 0 states 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 18:09:23,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12069 states to 12069 states and 15930 transitions. [2021-11-06 18:09:23,022 INFO L78 Accepts]: Start accepts. Automaton has 12069 states and 15930 transitions. Word has length 78 [2021-11-06 18:09:23,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:09:23,023 INFO L470 AbstractCegarLoop]: Abstraction has 12069 states and 15930 transitions. [2021-11-06 18:09:23,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:09:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand 12069 states and 15930 transitions. [2021-11-06 18:09:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 18:09:23,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:09:23,027 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:09:23,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:09:23,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:09:23,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:09:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1131535695, now seen corresponding path program 1 times [2021-11-06 18:09:23,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:09:23,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493651493] [2021-11-06 18:09:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:23,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:09:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:09:23,259 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 18:09:23,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:09:23,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493651493] [2021-11-06 18:09:23,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493651493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:09:23,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:09:23,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:09:23,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375985481] [2021-11-06 18:09:23,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:09:23,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:09:23,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:09:23,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:09:23,261 INFO L87 Difference]: Start difference. First operand 12069 states and 15930 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 18:09:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:09:26,083 INFO L93 Difference]: Finished difference Result 27182 states and 35900 transitions. [2021-11-06 18:09:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:09:26,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-06 18:09:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:09:26,129 INFO L225 Difference]: With dead ends: 27182 [2021-11-06 18:09:26,130 INFO L226 Difference]: Without dead ends: 15229 [2021-11-06 18:09:26,150 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 18:09:26,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15229 states. [2021-11-06 18:09:26,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15229 to 15215. [2021-11-06 18:09:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3188034188034188) internal successors, (20059), 15214 states have internal predecessors, (20059), 0 states have call successors, (0), 0 states 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 18:09:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20059 transitions. [2021-11-06 18:09:26,426 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20059 transitions. Word has length 96 [2021-11-06 18:09:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:09:26,428 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 20059 transitions. [2021-11-06 18:09:26,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 18:09:26,430 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20059 transitions. [2021-11-06 18:09:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-06 18:09:26,434 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:09:26,435 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:09:26,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:09:26,436 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:09:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:09:26,437 INFO L85 PathProgramCache]: Analyzing trace with hash -104060752, now seen corresponding path program 1 times [2021-11-06 18:09:26,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:09:26,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983739291] [2021-11-06 18:09:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:26,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:09:26,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:09:26,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211904532] [2021-11-06 18:09:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:26,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:26,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:09:26,557 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 18:09:26,575 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 18:09:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:09:28,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 4034 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:09:28,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:09:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:09:29,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:09:29,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983739291] [2021-11-06 18:09:29,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:09:29,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211904532] [2021-11-06 18:09:29,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211904532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:09:29,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:09:29,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:09:29,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493938872] [2021-11-06 18:09:29,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:09:29,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:09:29,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:09:29,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:09:29,397 INFO L87 Difference]: Start difference. First operand 15215 states and 20059 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:09:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:09:29,629 INFO L93 Difference]: Finished difference Result 30314 states and 39988 transitions. [2021-11-06 18:09:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:09:29,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 128 [2021-11-06 18:09:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:09:29,666 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:09:29,666 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:09:29,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 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 18:09:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:09:29,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:09:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3181459566074951) internal successors, (20049), 15214 states have internal predecessors, (20049), 0 states have call successors, (0), 0 states 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 18:09:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20049 transitions. [2021-11-06 18:09:29,968 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20049 transitions. Word has length 128 [2021-11-06 18:09:29,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:09:29,969 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 20049 transitions. [2021-11-06 18:09:29,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 18:09:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20049 transitions. [2021-11-06 18:09:29,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 18:09:29,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:09:29,973 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:09:30,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 18:09:30,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:30,200 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:09:30,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:09:30,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1068739855, now seen corresponding path program 1 times [2021-11-06 18:09:30,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:09:30,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005152759] [2021-11-06 18:09:30,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:30,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:09:30,293 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:09:30,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871849810] [2021-11-06 18:09:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:30,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:30,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:09:30,295 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 18:09:30,296 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 18:09:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:09:31,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 4035 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:09:31,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:09:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:09:32,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:09:32,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005152759] [2021-11-06 18:09:32,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:09:32,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871849810] [2021-11-06 18:09:32,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871849810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:09:32,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:09:32,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:09:32,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000299474] [2021-11-06 18:09:32,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:09:32,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:09:32,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:09:32,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:09:32,810 INFO L87 Difference]: Start difference. First operand 15215 states and 20049 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 18:09:33,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:09:33,050 INFO L93 Difference]: Finished difference Result 30314 states and 39968 transitions. [2021-11-06 18:09:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:09:33,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-06 18:09:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:09:33,079 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:09:33,079 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:09:33,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 18:09:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:09:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:09:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3174884944115712) internal successors, (20039), 15214 states have internal predecessors, (20039), 0 states have call successors, (0), 0 states 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 18:09:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20039 transitions. [2021-11-06 18:09:33,567 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20039 transitions. Word has length 129 [2021-11-06 18:09:33,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:09:33,569 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 20039 transitions. [2021-11-06 18:09:33,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 18:09:33,569 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20039 transitions. [2021-11-06 18:09:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-06 18:09:33,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:09:33,573 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:09:33,602 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 18:09:33,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-06 18:09:33,784 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:09:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:09:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1228998037, now seen corresponding path program 1 times [2021-11-06 18:09:33,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:09:33,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652979333] [2021-11-06 18:09:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:33,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:09:33,890 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:09:33,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400032594] [2021-11-06 18:09:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:33,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:33,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:09:33,892 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 18:09:33,893 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 18:09:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:09:35,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 4036 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:09:35,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:09:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:09:36,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:09:36,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652979333] [2021-11-06 18:09:36,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:09:36,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400032594] [2021-11-06 18:09:36,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400032594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:09:36,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:09:36,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:09:36,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270643224] [2021-11-06 18:09:36,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:09:36,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:09:36,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:09:36,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:09:36,475 INFO L87 Difference]: Start difference. First operand 15215 states and 20039 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 18:09:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:09:36,737 INFO L93 Difference]: Finished difference Result 30314 states and 39948 transitions. [2021-11-06 18:09:36,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:09:36,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 130 [2021-11-06 18:09:36,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:09:36,763 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:09:36,763 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:09:36,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 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 18:09:36,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:09:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:09:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3168310322156476) internal successors, (20029), 15214 states have internal predecessors, (20029), 0 states have call successors, (0), 0 states 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 18:09:37,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20029 transitions. [2021-11-06 18:09:37,323 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20029 transitions. Word has length 130 [2021-11-06 18:09:37,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:09:37,324 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 20029 transitions. [2021-11-06 18:09:37,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 18:09:37,324 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20029 transitions. [2021-11-06 18:09:37,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 18:09:37,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:09:37,331 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:09:37,382 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 18:09:37,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:37,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:09:37,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:09:37,548 INFO L85 PathProgramCache]: Analyzing trace with hash 555720298, now seen corresponding path program 1 times [2021-11-06 18:09:37,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:09:37,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349676120] [2021-11-06 18:09:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:37,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:09:37,661 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:09:37,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384851408] [2021-11-06 18:09:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:37,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:37,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:09:37,663 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 18:09:37,665 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 18:09:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:09:39,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 4037 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:09:39,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:09:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:09:40,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:09:40,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349676120] [2021-11-06 18:09:40,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:09:40,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384851408] [2021-11-06 18:09:40,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384851408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:09:40,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:09:40,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:09:40,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116213881] [2021-11-06 18:09:40,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:09:40,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:09:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:09:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:09:40,372 INFO L87 Difference]: Start difference. First operand 15215 states and 20029 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:09:40,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:09:40,652 INFO L93 Difference]: Finished difference Result 30314 states and 39928 transitions. [2021-11-06 18:09:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:09:40,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 131 [2021-11-06 18:09:40,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:09:40,681 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:09:40,682 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:09:40,702 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 18:09:40,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:09:40,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:09:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.316173570019724) internal successors, (20019), 15214 states have internal predecessors, (20019), 0 states have call successors, (0), 0 states 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 18:09:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20019 transitions. [2021-11-06 18:09:41,024 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20019 transitions. Word has length 131 [2021-11-06 18:09:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:09:41,024 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 20019 transitions. [2021-11-06 18:09:41,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 18:09:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20019 transitions. [2021-11-06 18:09:41,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-06 18:09:41,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:09:41,028 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:09:41,058 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 18:09:41,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:41,247 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:09:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:09:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash 47562790, now seen corresponding path program 1 times [2021-11-06 18:09:41,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:09:41,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472434964] [2021-11-06 18:09:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:41,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:09:41,422 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:09:41,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195168316] [2021-11-06 18:09:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:41,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:41,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:09:41,427 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 18:09:41,430 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 18:09:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:09:42,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 4038 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:09:42,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:09:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:09:44,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:09:44,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472434964] [2021-11-06 18:09:44,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:09:44,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195168316] [2021-11-06 18:09:44,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195168316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:09:44,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:09:44,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:09:44,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415664] [2021-11-06 18:09:44,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:09:44,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:09:44,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:09:44,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:09:44,136 INFO L87 Difference]: Start difference. First operand 15215 states and 20019 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 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 18:09:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:09:44,438 INFO L93 Difference]: Finished difference Result 30314 states and 39908 transitions. [2021-11-06 18:09:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:09:44,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 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 18:09:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:09:44,462 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:09:44,462 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:09:44,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 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 18:09:44,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:09:44,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:09:44,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3155161078238002) internal successors, (20009), 15214 states have internal predecessors, (20009), 0 states have call successors, (0), 0 states 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 18:09:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 20009 transitions. [2021-11-06 18:09:44,816 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 20009 transitions. Word has length 132 [2021-11-06 18:09:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:09:44,816 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 20009 transitions. [2021-11-06 18:09:44,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 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 18:09:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 20009 transitions. [2021-11-06 18:09:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 18:09:44,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:09:44,820 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:09:44,849 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 18:09:45,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:45,036 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:09:45,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:09:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1474698181, now seen corresponding path program 1 times [2021-11-06 18:09:45,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:09:45,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645042192] [2021-11-06 18:09:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:45,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:09:45,130 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:09:45,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327255874] [2021-11-06 18:09:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:45,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:45,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:09:45,132 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 18:09:45,133 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 18:09:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:09:46,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 4039 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:09:46,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:09:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:09:47,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:09:47,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645042192] [2021-11-06 18:09:47,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:09:47,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327255874] [2021-11-06 18:09:47,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327255874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:09:47,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:09:47,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:09:47,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94618027] [2021-11-06 18:09:47,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:09:47,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:09:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:09:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:09:47,865 INFO L87 Difference]: Start difference. First operand 15215 states and 20009 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:09:48,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:09:48,273 INFO L93 Difference]: Finished difference Result 30314 states and 39888 transitions. [2021-11-06 18:09:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:09:48,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-06 18:09:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:09:48,292 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:09:48,292 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:09:48,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 18:09:48,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:09:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:09:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3148586456278764) internal successors, (19999), 15214 states have internal predecessors, (19999), 0 states have call successors, (0), 0 states 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 18:09:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19999 transitions. [2021-11-06 18:09:48,646 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19999 transitions. Word has length 133 [2021-11-06 18:09:48,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:09:48,647 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 19999 transitions. [2021-11-06 18:09:48,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:09:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19999 transitions. [2021-11-06 18:09:48,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-06 18:09:48,651 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:09:48,651 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:09:48,676 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 18:09:48,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:48,852 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:09:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:09:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1528595999, now seen corresponding path program 1 times [2021-11-06 18:09:48,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:09:48,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706853802] [2021-11-06 18:09:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:48,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:09:48,936 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:09:48,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191438345] [2021-11-06 18:09:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:48,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:48,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:09:48,937 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 18:09:48,938 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 18:09:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:09:50,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 4040 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:09:50,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:09:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:09:51,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:09:51,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706853802] [2021-11-06 18:09:51,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:09:51,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191438345] [2021-11-06 18:09:51,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191438345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:09:51,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:09:51,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:09:51,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729546133] [2021-11-06 18:09:51,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:09:51,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:09:51,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:09:51,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:09:51,654 INFO L87 Difference]: Start difference. First operand 15215 states and 19999 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:09:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:09:51,999 INFO L93 Difference]: Finished difference Result 30314 states and 39868 transitions. [2021-11-06 18:09:52,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:09:52,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-06 18:09:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:09:52,024 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:09:52,024 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:09:52,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 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 18:09:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:09:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:09:52,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3142011834319527) internal successors, (19989), 15214 states have internal predecessors, (19989), 0 states have call successors, (0), 0 states 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 18:09:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19989 transitions. [2021-11-06 18:09:52,507 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19989 transitions. Word has length 134 [2021-11-06 18:09:52,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:09:52,507 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 19989 transitions. [2021-11-06 18:09:52,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:09:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19989 transitions. [2021-11-06 18:09:52,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 18:09:52,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:09:52,511 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:09:52,538 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 18:09:52,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:52,724 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:09:52,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:09:52,724 INFO L85 PathProgramCache]: Analyzing trace with hash -141286112, now seen corresponding path program 1 times [2021-11-06 18:09:52,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:09:52,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765867904] [2021-11-06 18:09:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:52,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:09:52,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:09:52,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268722850] [2021-11-06 18:09:52,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:52,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:52,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:09:52,811 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 18:09:52,813 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 18:09:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:09:54,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 4041 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:09:54,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:09:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:09:55,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:09:55,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765867904] [2021-11-06 18:09:55,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:09:55,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268722850] [2021-11-06 18:09:55,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268722850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:09:55,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:09:55,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:09:55,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287890426] [2021-11-06 18:09:55,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:09:55,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:09:55,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:09:55,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:09:55,566 INFO L87 Difference]: Start difference. First operand 15215 states and 19989 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:09:55,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:09:55,921 INFO L93 Difference]: Finished difference Result 30314 states and 39848 transitions. [2021-11-06 18:09:55,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:09:55,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-06 18:09:55,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:09:55,942 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:09:55,942 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:09:55,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 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 18:09:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:09:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:09:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.313543721236029) internal successors, (19979), 15214 states have internal predecessors, (19979), 0 states have call successors, (0), 0 states 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 18:09:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19979 transitions. [2021-11-06 18:09:56,308 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19979 transitions. Word has length 135 [2021-11-06 18:09:56,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:09:56,308 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 19979 transitions. [2021-11-06 18:09:56,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:09:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19979 transitions. [2021-11-06 18:09:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-06 18:09:56,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:09:56,312 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:09:56,342 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 18:09:56,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 18:09:56,543 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:09:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:09:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash -84203620, now seen corresponding path program 1 times [2021-11-06 18:09:56,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:09:56,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066474619] [2021-11-06 18:09:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:56,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:09:56,623 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:09:56,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813068988] [2021-11-06 18:09:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:09:56,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:09:56,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:09:56,634 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 18:09:56,635 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 18:09:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:09:58,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:09:58,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:09:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:09:59,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:09:59,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066474619] [2021-11-06 18:09:59,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:09:59,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813068988] [2021-11-06 18:09:59,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813068988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:09:59,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:09:59,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:09:59,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119470000] [2021-11-06 18:09:59,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:09:59,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:09:59,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:09:59,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:09:59,602 INFO L87 Difference]: Start difference. First operand 15215 states and 19979 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:00,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:00,132 INFO L93 Difference]: Finished difference Result 30314 states and 39828 transitions. [2021-11-06 18:10:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:00,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-06 18:10:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:00,152 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:10:00,152 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:10:00,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 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 18:10:00,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:10:00,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:10:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3128862590401051) internal successors, (19969), 15214 states have internal predecessors, (19969), 0 states have call successors, (0), 0 states 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 18:10:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19969 transitions. [2021-11-06 18:10:00,533 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19969 transitions. Word has length 136 [2021-11-06 18:10:00,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:00,534 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 19969 transitions. [2021-11-06 18:10:00,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:00,534 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19969 transitions. [2021-11-06 18:10:00,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 18:10:00,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:00,537 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:00,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-06 18:10:00,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:00,738 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:10:00,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1685502587, now seen corresponding path program 1 times [2021-11-06 18:10:00,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:00,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611294547] [2021-11-06 18:10:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:00,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:00,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:10:00,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129252260] [2021-11-06 18:10:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:00,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:00,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:00,822 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:10:00,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 18:10:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:02,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 4043 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:10:02,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:10:03,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:10:03,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:03,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611294547] [2021-11-06 18:10:03,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:10:03,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129252260] [2021-11-06 18:10:03,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129252260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:03,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:03,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:10:03,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486279688] [2021-11-06 18:10:03,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:03,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:03,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:03,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:03,627 INFO L87 Difference]: Start difference. First operand 15215 states and 19969 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:04,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:04,016 INFO L93 Difference]: Finished difference Result 30314 states and 39808 transitions. [2021-11-06 18:10:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:04,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 18:10:04,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:04,040 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:10:04,040 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:10:04,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 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 18:10:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:10:04,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:10:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3122287968441815) internal successors, (19959), 15214 states have internal predecessors, (19959), 0 states have call successors, (0), 0 states 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 18:10:04,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19959 transitions. [2021-11-06 18:10:04,452 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19959 transitions. Word has length 137 [2021-11-06 18:10:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:04,452 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 19959 transitions. [2021-11-06 18:10:04,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:04,453 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19959 transitions. [2021-11-06 18:10:04,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 18:10:04,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:04,456 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:04,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 18:10:04,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-06 18:10:04,663 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:10:04,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:04,663 INFO L85 PathProgramCache]: Analyzing trace with hash 711969111, now seen corresponding path program 1 times [2021-11-06 18:10:04,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:04,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763101661] [2021-11-06 18:10:04,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:04,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:04,754 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:10:04,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425985453] [2021-11-06 18:10:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:04,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:04,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:04,756 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:10:04,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 18:10:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:06,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 4044 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:10:06,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:10:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:10:07,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:07,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763101661] [2021-11-06 18:10:07,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:10:07,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425985453] [2021-11-06 18:10:07,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425985453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:07,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:07,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:10:07,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353446779] [2021-11-06 18:10:07,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:07,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:07,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:07,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:07,658 INFO L87 Difference]: Start difference. First operand 15215 states and 19959 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 18:10:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:08,133 INFO L93 Difference]: Finished difference Result 30314 states and 39788 transitions. [2021-11-06 18:10:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:08,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 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 138 [2021-11-06 18:10:08,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:08,152 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:10:08,152 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:10:08,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 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 18:10:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:10:08,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:10:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3115713346482578) internal successors, (19949), 15214 states have internal predecessors, (19949), 0 states have call successors, (0), 0 states 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 18:10:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19949 transitions. [2021-11-06 18:10:08,558 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19949 transitions. Word has length 138 [2021-11-06 18:10:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:08,559 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 19949 transitions. [2021-11-06 18:10:08,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 18:10:08,559 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19949 transitions. [2021-11-06 18:10:08,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-06 18:10:08,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:08,562 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:08,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 18:10:08,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 18:10:08,763 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:10:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash 597351382, now seen corresponding path program 1 times [2021-11-06 18:10:08,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:08,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883300923] [2021-11-06 18:10:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:08,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:08,848 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:10:08,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758392152] [2021-11-06 18:10:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:08,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:08,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:08,861 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:10:08,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 18:10:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:10,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 4045 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:10:10,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:10:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:10:11,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:11,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883300923] [2021-11-06 18:10:11,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:10:11,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758392152] [2021-11-06 18:10:11,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758392152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:11,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:11,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:10:11,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303936555] [2021-11-06 18:10:11,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:11,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:11,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:11,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:11,723 INFO L87 Difference]: Start difference. First operand 15215 states and 19949 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:12,244 INFO L93 Difference]: Finished difference Result 30314 states and 39768 transitions. [2021-11-06 18:10:12,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:12,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-06 18:10:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:12,262 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:10:12,262 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:10:12,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 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 18:10:12,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:10:12,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:10:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.310913872452334) internal successors, (19939), 15214 states have internal predecessors, (19939), 0 states have call successors, (0), 0 states 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 18:10:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19939 transitions. [2021-11-06 18:10:12,703 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19939 transitions. Word has length 139 [2021-11-06 18:10:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:12,704 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 19939 transitions. [2021-11-06 18:10:12,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19939 transitions. [2021-11-06 18:10:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 18:10:12,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:12,707 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:12,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-06 18:10:12,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 18:10:12,908 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:10:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1339318034, now seen corresponding path program 1 times [2021-11-06 18:10:12,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:12,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443775285] [2021-11-06 18:10:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:12,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:12,991 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:10:12,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106942672] [2021-11-06 18:10:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:12,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:12,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:12,993 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:10:12,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 18:10:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:14,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 4046 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:10:14,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:10:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:10:15,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:15,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443775285] [2021-11-06 18:10:15,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:10:15,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106942672] [2021-11-06 18:10:15,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106942672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:15,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:15,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:10:15,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563507130] [2021-11-06 18:10:15,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:15,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:15,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:15,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:15,859 INFO L87 Difference]: Start difference. First operand 15215 states and 19939 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:16,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:16,397 INFO L93 Difference]: Finished difference Result 30314 states and 39748 transitions. [2021-11-06 18:10:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:16,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-06 18:10:16,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:16,416 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:10:16,416 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:10:16,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 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 18:10:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:10:16,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:10:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3102564102564103) internal successors, (19929), 15214 states have internal predecessors, (19929), 0 states have call successors, (0), 0 states 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 18:10:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19929 transitions. [2021-11-06 18:10:16,877 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19929 transitions. Word has length 140 [2021-11-06 18:10:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:16,877 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 19929 transitions. [2021-11-06 18:10:16,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:16,877 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19929 transitions. [2021-11-06 18:10:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-06 18:10:16,880 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:16,881 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:16,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-06 18:10:17,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 18:10:17,088 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:10:17,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1429370575, now seen corresponding path program 1 times [2021-11-06 18:10:17,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:17,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744212577] [2021-11-06 18:10:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:17,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:17,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:10:17,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383999295] [2021-11-06 18:10:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:17,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:17,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:17,175 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:10:17,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 18:10:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:18,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 4047 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:10:18,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:10:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:10:20,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:20,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744212577] [2021-11-06 18:10:20,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:10:20,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383999295] [2021-11-06 18:10:20,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383999295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:20,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:20,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:10:20,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588482575] [2021-11-06 18:10:20,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:20,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:20,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:20,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:20,150 INFO L87 Difference]: Start difference. First operand 15215 states and 19929 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:20,703 INFO L93 Difference]: Finished difference Result 30314 states and 39728 transitions. [2021-11-06 18:10:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-11-06 18:10:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:20,723 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:10:20,723 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:10:20,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 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 18:10:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:10:21,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:10:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3095989480604866) internal successors, (19919), 15214 states have internal predecessors, (19919), 0 states have call successors, (0), 0 states 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 18:10:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19919 transitions. [2021-11-06 18:10:21,247 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19919 transitions. Word has length 141 [2021-11-06 18:10:21,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:21,247 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 19919 transitions. [2021-11-06 18:10:21,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:21,247 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19919 transitions. [2021-11-06 18:10:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-06 18:10:21,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:21,250 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:21,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-06 18:10:21,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:21,451 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:10:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:21,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1359222579, now seen corresponding path program 1 times [2021-11-06 18:10:21,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:21,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812923295] [2021-11-06 18:10:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:21,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:21,530 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:10:21,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194055240] [2021-11-06 18:10:21,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:21,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:21,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:21,532 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:10:21,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-06 18:10:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:23,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 4048 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:10:23,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:10:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:10:24,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:24,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812923295] [2021-11-06 18:10:24,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:10:24,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194055240] [2021-11-06 18:10:24,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194055240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:24,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:24,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:10:24,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638189978] [2021-11-06 18:10:24,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:24,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:24,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:24,555 INFO L87 Difference]: Start difference. First operand 15215 states and 19919 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 18:10:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:25,147 INFO L93 Difference]: Finished difference Result 30314 states and 39708 transitions. [2021-11-06 18:10:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:25,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 142 [2021-11-06 18:10:25,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:25,169 INFO L225 Difference]: With dead ends: 30314 [2021-11-06 18:10:25,169 INFO L226 Difference]: Without dead ends: 15215 [2021-11-06 18:10:25,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 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 18:10:25,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2021-11-06 18:10:25,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 15215. [2021-11-06 18:10:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15215 states, 15210 states have (on average 1.3089414858645627) internal successors, (19909), 15214 states have internal predecessors, (19909), 0 states have call successors, (0), 0 states 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 18:10:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15215 states to 15215 states and 19909 transitions. [2021-11-06 18:10:25,687 INFO L78 Accepts]: Start accepts. Automaton has 15215 states and 19909 transitions. Word has length 142 [2021-11-06 18:10:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:25,687 INFO L470 AbstractCegarLoop]: Abstraction has 15215 states and 19909 transitions. [2021-11-06 18:10:25,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 18:10:25,687 INFO L276 IsEmpty]: Start isEmpty. Operand 15215 states and 19909 transitions. [2021-11-06 18:10:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-06 18:10:25,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:25,690 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:25,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-06 18:10:25,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-06 18:10:25,891 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:10:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash 815514252, now seen corresponding path program 1 times [2021-11-06 18:10:25,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:25,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825568798] [2021-11-06 18:10:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:25,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:25,986 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:10:25,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206324475] [2021-11-06 18:10:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:25,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:25,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:25,988 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:10:25,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-06 18:10:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:27,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:10:27,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:10:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:10:29,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:29,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825568798] [2021-11-06 18:10:29,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:10:29,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206324475] [2021-11-06 18:10:29,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206324475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:29,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:29,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:10:29,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281341401] [2021-11-06 18:10:29,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:29,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:29,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:29,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:29,129 INFO L87 Difference]: Start difference. First operand 15215 states and 19909 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 18:10:30,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:30,317 INFO L93 Difference]: Finished difference Result 45399 states and 59453 transitions. [2021-11-06 18:10:30,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:30,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-06 18:10:30,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:30,356 INFO L225 Difference]: With dead ends: 45399 [2021-11-06 18:10:30,357 INFO L226 Difference]: Without dead ends: 30300 [2021-11-06 18:10:30,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 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 18:10:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30300 states. [2021-11-06 18:10:31,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30300 to 29782. [2021-11-06 18:10:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29782 states, 29777 states have (on average 1.3105081102864626) internal successors, (39023), 29781 states have internal predecessors, (39023), 0 states have call successors, (0), 0 states 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 18:10:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29782 states to 29782 states and 39023 transitions. [2021-11-06 18:10:31,356 INFO L78 Accepts]: Start accepts. Automaton has 29782 states and 39023 transitions. Word has length 143 [2021-11-06 18:10:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:31,357 INFO L470 AbstractCegarLoop]: Abstraction has 29782 states and 39023 transitions. [2021-11-06 18:10:31,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 18:10:31,357 INFO L276 IsEmpty]: Start isEmpty. Operand 29782 states and 39023 transitions. [2021-11-06 18:10:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-06 18:10:31,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:31,360 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:31,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-06 18:10:31,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 18:10:31,561 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:10:31,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:31,561 INFO L85 PathProgramCache]: Analyzing trace with hash 815573834, now seen corresponding path program 1 times [2021-11-06 18:10:31,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:31,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228280990] [2021-11-06 18:10:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:31,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:31,638 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:10:31,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510008880] [2021-11-06 18:10:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:31,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:31,640 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:10:31,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-06 18:10:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:33,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 4048 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:10:33,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:10:34,101 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 18:10:34,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:34,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228280990] [2021-11-06 18:10:34,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:10:34,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510008880] [2021-11-06 18:10:34,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510008880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:34,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:34,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:34,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402737865] [2021-11-06 18:10:34,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:34,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:34,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:34,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:34,103 INFO L87 Difference]: Start difference. First operand 29782 states and 39023 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:10:37,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:37,918 INFO L93 Difference]: Finished difference Result 65501 states and 85835 transitions. [2021-11-06 18:10:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:37,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-06 18:10:37,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:37,971 INFO L225 Difference]: With dead ends: 65501 [2021-11-06 18:10:37,971 INFO L226 Difference]: Without dead ends: 35835 [2021-11-06 18:10:38,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 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 18:10:38,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35835 states. [2021-11-06 18:10:39,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35835 to 35813. [2021-11-06 18:10:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35813 states, 35808 states have (on average 1.308841599642538) internal successors, (46867), 35812 states have internal predecessors, (46867), 0 states have call successors, (0), 0 states 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 18:10:39,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35813 states to 35813 states and 46867 transitions. [2021-11-06 18:10:39,336 INFO L78 Accepts]: Start accepts. Automaton has 35813 states and 46867 transitions. Word has length 143 [2021-11-06 18:10:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:39,336 INFO L470 AbstractCegarLoop]: Abstraction has 35813 states and 46867 transitions. [2021-11-06 18:10:39,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 18:10:39,336 INFO L276 IsEmpty]: Start isEmpty. Operand 35813 states and 46867 transitions. [2021-11-06 18:10:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-06 18:10:39,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:39,340 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1] [2021-11-06 18:10:39,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-06 18:10:39,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:39,541 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:10:39,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash -153920165, now seen corresponding path program 1 times [2021-11-06 18:10:39,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:39,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242603407] [2021-11-06 18:10:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:39,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:39,623 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:10:39,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419202077] [2021-11-06 18:10:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:39,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:39,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:39,624 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:10:39,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-06 18:10:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:41,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 4010 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:10:41,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:10:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:10:42,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:42,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242603407] [2021-11-06 18:10:42,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:10:42,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419202077] [2021-11-06 18:10:42,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419202077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:42,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:42,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:42,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860255185] [2021-11-06 18:10:42,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:42,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:42,086 INFO L87 Difference]: Start difference. First operand 35813 states and 46867 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:10:44,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:44,087 INFO L93 Difference]: Finished difference Result 77563 states and 101523 transitions. [2021-11-06 18:10:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:44,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2021-11-06 18:10:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:44,148 INFO L225 Difference]: With dead ends: 77563 [2021-11-06 18:10:44,148 INFO L226 Difference]: Without dead ends: 41866 [2021-11-06 18:10:44,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 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 18:10:44,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41866 states. [2021-11-06 18:10:45,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41866 to 41844. [2021-11-06 18:10:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41844 states, 41839 states have (on average 1.3084203733358828) internal successors, (54743), 41843 states have internal predecessors, (54743), 0 states have call successors, (0), 0 states 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 18:10:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41844 states to 41844 states and 54743 transitions. [2021-11-06 18:10:46,007 INFO L78 Accepts]: Start accepts. Automaton has 41844 states and 54743 transitions. Word has length 147 [2021-11-06 18:10:46,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:46,008 INFO L470 AbstractCegarLoop]: Abstraction has 41844 states and 54743 transitions. [2021-11-06 18:10:46,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 18:10:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 41844 states and 54743 transitions. [2021-11-06 18:10:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-06 18:10:46,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:46,012 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:46,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-06 18:10:46,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:46,220 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:10:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1169414982, now seen corresponding path program 1 times [2021-11-06 18:10:46,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:46,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889588888] [2021-11-06 18:10:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:46,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:46,318 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:10:46,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852818209] [2021-11-06 18:10:46,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:46,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:46,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:46,320 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:10:46,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-06 18:10:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:48,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 4202 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:10:48,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:10:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:10:48,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:48,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889588888] [2021-11-06 18:10:48,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:10:48,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852818209] [2021-11-06 18:10:48,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852818209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:48,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:48,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:48,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081269280] [2021-11-06 18:10:48,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:48,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:48,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:48,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:48,844 INFO L87 Difference]: Start difference. First operand 41844 states and 54743 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:53,413 INFO L93 Difference]: Finished difference Result 89625 states and 117267 transitions. [2021-11-06 18:10:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:53,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-11-06 18:10:53,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:53,482 INFO L225 Difference]: With dead ends: 89625 [2021-11-06 18:10:53,482 INFO L226 Difference]: Without dead ends: 47897 [2021-11-06 18:10:53,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 178 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 18:10:53,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47897 states. [2021-11-06 18:10:55,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47897 to 47875. [2021-11-06 18:10:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47875 states, 47870 states have (on average 1.3076039273031126) internal successors, (62595), 47874 states have internal predecessors, (62595), 0 states have call successors, (0), 0 states 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 18:10:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47875 states to 47875 states and 62595 transitions. [2021-11-06 18:10:55,636 INFO L78 Accepts]: Start accepts. Automaton has 47875 states and 62595 transitions. Word has length 180 [2021-11-06 18:10:55,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:55,636 INFO L470 AbstractCegarLoop]: Abstraction has 47875 states and 62595 transitions. [2021-11-06 18:10:55,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:10:55,636 INFO L276 IsEmpty]: Start isEmpty. Operand 47875 states and 62595 transitions. [2021-11-06 18:10:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-06 18:10:55,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:55,642 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:55,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-06 18:10:55,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:55,843 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:10:55,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:55,844 INFO L85 PathProgramCache]: Analyzing trace with hash 899289929, now seen corresponding path program 1 times [2021-11-06 18:10:55,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:55,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844508063] [2021-11-06 18:10:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:55,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:55,954 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:10:55,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688374384] [2021-11-06 18:10:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:55,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:10:55,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:10:55,956 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:10:55,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-06 18:10:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:58,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:10:58,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:10:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:10:58,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:58,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844508063] [2021-11-06 18:10:58,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:10:58,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688374384] [2021-11-06 18:10:58,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688374384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:58,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:58,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:58,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715657432] [2021-11-06 18:10:58,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:58,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:58,786 INFO L87 Difference]: Start difference. First operand 47875 states and 62595 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 18:11:01,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:01,767 INFO L93 Difference]: Finished difference Result 101687 states and 132931 transitions. [2021-11-06 18:11:01,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:01,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 207 [2021-11-06 18:11:01,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:01,869 INFO L225 Difference]: With dead ends: 101687 [2021-11-06 18:11:01,869 INFO L226 Difference]: Without dead ends: 53928 [2021-11-06 18:11:01,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 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 18:11:01,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53928 states. [2021-11-06 18:11:04,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53928 to 53906. [2021-11-06 18:11:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53906 states, 53901 states have (on average 1.306228084822174) internal successors, (70407), 53905 states have internal predecessors, (70407), 0 states have call successors, (0), 0 states 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 18:11:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53906 states to 53906 states and 70407 transitions. [2021-11-06 18:11:04,523 INFO L78 Accepts]: Start accepts. Automaton has 53906 states and 70407 transitions. Word has length 207 [2021-11-06 18:11:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:04,523 INFO L470 AbstractCegarLoop]: Abstraction has 53906 states and 70407 transitions. [2021-11-06 18:11:04,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 18:11:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 53906 states and 70407 transitions. [2021-11-06 18:11:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-06 18:11:04,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:04,530 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:04,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-06 18:11:04,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-06 18:11:04,731 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 18:11:04,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:04,731 INFO L85 PathProgramCache]: Analyzing trace with hash 15780939, now seen corresponding path program 1 times [2021-11-06 18:11:04,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:04,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035205106] [2021-11-06 18:11:04,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:04,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:05,006 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 18:11:05,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857019473] [2021-11-06 18:11:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:05,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 18:11:05,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:11:05,008 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 18:11:05,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-06 18:11:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:07,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 4263 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 18:11:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 18:11:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:11:07,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:07,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035205106] [2021-11-06 18:11:07,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 18:11:07,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857019473] [2021-11-06 18:11:07,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857019473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:07,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:07,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:07,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975826532] [2021-11-06 18:11:07,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:07,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:07,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:07,805 INFO L87 Difference]: Start difference. First operand 53906 states and 70407 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 18:11:12,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:12,582 INFO L93 Difference]: Finished difference Result 113749 states and 148555 transitions. [2021-11-06 18:11:12,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:12,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 207 [2021-11-06 18:11:12,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:12,694 INFO L225 Difference]: With dead ends: 113749 [2021-11-06 18:11:12,694 INFO L226 Difference]: Without dead ends: 59959 [2021-11-06 18:11:12,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 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 18:11:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59959 states.