./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 73e11d79da89f19153d89e853a8d4a3607f25d95ae579da9c148a59839e48ce3 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 08:22:03,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 08:22:03,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 08:22:03,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 08:22:03,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 08:22:03,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 08:22:03,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 08:22:03,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 08:22:03,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 08:22:03,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 08:22:03,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 08:22:03,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 08:22:03,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 08:22:03,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 08:22:03,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 08:22:03,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 08:22:03,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 08:22:03,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 08:22:03,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 08:22:03,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 08:22:03,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 08:22:03,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 08:22:03,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 08:22:03,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 08:22:03,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 08:22:03,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 08:22:03,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 08:22:03,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 08:22:03,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 08:22:03,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 08:22:03,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 08:22:03,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 08:22:03,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 08:22:03,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 08:22:03,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 08:22:03,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 08:22:03,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 08:22:03,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 08:22:03,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 08:22:03,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 08:22:03,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 08:22:03,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 08:22:03,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 08:22:03,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 08:22:03,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 08:22:03,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 08:22:03,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 08:22:03,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 08:22:03,672 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 08:22:03,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 08:22:03,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 08:22:03,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 08:22:03,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 08:22:03,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 08:22:03,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 08:22:03,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 08:22:03,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 08:22:03,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 08:22:03,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 08:22:03,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 08:22:03,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 08:22:03,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:22:03,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 08:22:03,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 08:22:03,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 08:22:03,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 08:22:03,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 08:22:03,676 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 08:22:03,676 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 08:22:03,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 08:22:03,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 08:22:03,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73e11d79da89f19153d89e853a8d4a3607f25d95ae579da9c148a59839e48ce3 [2021-11-04 08:22:03,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 08:22:03,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 08:22:03,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 08:22:03,878 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 08:22:03,879 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 08:22:03,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-04 08:22:03,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1e36fb79/0f70deb364da4e6c89eee9416ed63291/FLAG468707e02 [2021-11-04 08:22:04,570 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 08:22:04,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-04 08:22:04,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1e36fb79/0f70deb364da4e6c89eee9416ed63291/FLAG468707e02 [2021-11-04 08:22:04,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1e36fb79/0f70deb364da4e6c89eee9416ed63291 [2021-11-04 08:22:04,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 08:22:04,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 08:22:04,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 08:22:04,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 08:22:04,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 08:22:04,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:22:04" (1/1) ... [2021-11-04 08:22:04,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d7faff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:04, skipping insertion in model container [2021-11-04 08:22:04,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:22:04" (1/1) ... [2021-11-04 08:22:04,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 08:22:04,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 08:22:06,962 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[468644,468657] [2021-11-04 08:22:07,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:22:07,080 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 08:22:07,390 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[468644,468657] [2021-11-04 08:22:07,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:22:07,509 INFO L208 MainTranslator]: Completed translation [2021-11-04 08:22:07,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07 WrapperNode [2021-11-04 08:22:07,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 08:22:07,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 08:22:07,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 08:22:07,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 08:22:07,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07" (1/1) ... [2021-11-04 08:22:07,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07" (1/1) ... [2021-11-04 08:22:10,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 08:22:10,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 08:22:10,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 08:22:10,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 08:22:10,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07" (1/1) ... [2021-11-04 08:22:10,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07" (1/1) ... [2021-11-04 08:22:11,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07" (1/1) ... [2021-11-04 08:22:11,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07" (1/1) ... [2021-11-04 08:22:13,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07" (1/1) ... [2021-11-04 08:22:13,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07" (1/1) ... [2021-11-04 08:22:13,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07" (1/1) ... [2021-11-04 08:22:14,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 08:22:14,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 08:22:14,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 08:22:14,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 08:22:14,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07" (1/1) ... [2021-11-04 08:22:14,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:22:14,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:22:14,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 08:22:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 08:22:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 08:22:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 08:22:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 08:22:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 08:22:14,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 08:22:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 08:22:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 08:22:14,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 08:22:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 08:22:14,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 08:22:14,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 08:22:14,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 08:22:14,643 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-04 08:22:14,643 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-04 08:22:14,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 08:22:14,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 08:22:14,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 08:22:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 08:22:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 08:22:26,090 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 08:22:26,090 INFO L299 CfgBuilder]: Removed 40710 assume(true) statements. [2021-11-04 08:22:26,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:22:26 BoogieIcfgContainer [2021-11-04 08:22:26,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 08:22:26,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 08:22:26,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 08:22:26,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 08:22:26,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:22:04" (1/3) ... [2021-11-04 08:22:26,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b130fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:22:26, skipping insertion in model container [2021-11-04 08:22:26,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:22:07" (2/3) ... [2021-11-04 08:22:26,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b130fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:22:26, skipping insertion in model container [2021-11-04 08:22:26,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:22:26" (3/3) ... [2021-11-04 08:22:26,117 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-04 08:22:26,121 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 08:22:26,121 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-04 08:22:26,212 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 08:22:26,220 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 08:22:26,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-04 08:22:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 23420 states, 23402 states have (on average 1.2447226732757883) internal successors, (29129), 23414 states have internal predecessors, (29129), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-04 08:22:26,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-04 08:22:26,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:22:26,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:22:26,455 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 08:22:26,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:22:26,458 INFO L85 PathProgramCache]: Analyzing trace with hash -636847731, now seen corresponding path program 1 times [2021-11-04 08:22:26,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:22:26,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107504691] [2021-11-04 08:22:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:22:26,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:22:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:22:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:22:26,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:22:26,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107504691] [2021-11-04 08:22:26,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107504691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:22:26,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:22:26,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 08:22:26,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855040786] [2021-11-04 08:22:26,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:22:26,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 08:22:26,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:22:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 08:22:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:22:27,020 INFO L87 Difference]: Start difference. First operand has 23420 states, 23402 states have (on average 1.2447226732757883) internal successors, (29129), 23414 states have internal predecessors, (29129), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:22:45,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:22:46,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:22:51,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 08:23:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:23:06,926 INFO L93 Difference]: Finished difference Result 46368 states and 57649 transitions. [2021-11-04 08:23:06,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 08:23:06,930 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-04 08:23:06,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:23:07,033 INFO L225 Difference]: With dead ends: 46368 [2021-11-04 08:23:07,034 INFO L226 Difference]: Without dead ends: 22869 [2021-11-04 08:23:07,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:23:07,099 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28215 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33674.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 28216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38927.22ms IncrementalHoareTripleChecker+Time [2021-11-04 08:23:07,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 28216 Unknown, 0 Unchecked, 25.07ms Time], IncrementalHoareTripleChecker [0 Valid, 28215 Invalid, 1 Unknown, 0 Unchecked, 38927.22ms Time] [2021-11-04 08:23:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22869 states. [2021-11-04 08:23:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22869 to 22869. [2021-11-04 08:23:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22869 states, 22852 states have (on average 1.2310519866970069) internal successors, (28132), 22863 states have internal predecessors, (28132), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-04 08:23:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22869 states to 22869 states and 28140 transitions. [2021-11-04 08:23:07,649 INFO L78 Accepts]: Start accepts. Automaton has 22869 states and 28140 transitions. Word has length 82 [2021-11-04 08:23:07,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:23:07,650 INFO L470 AbstractCegarLoop]: Abstraction has 22869 states and 28140 transitions. [2021-11-04 08:23:07,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:23:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 22869 states and 28140 transitions. [2021-11-04 08:23:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-04 08:23:07,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:23:07,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:23:07,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 08:23:07,660 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 08:23:07,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:23:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash -582741599, now seen corresponding path program 1 times [2021-11-04 08:23:07,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:23:07,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871966314] [2021-11-04 08:23:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:23:07,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:23:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:23:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:23:07,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:23:07,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871966314] [2021-11-04 08:23:07,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871966314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:23:07,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:23:07,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:23:07,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215699804] [2021-11-04 08:23:07,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:23:07,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:23:07,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:23:07,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:23:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:23:07,996 INFO L87 Difference]: Start difference. First operand 22869 states and 28140 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:23:22,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:23:29,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:23:41,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:23:43,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:24:19,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:24:19,107 INFO L93 Difference]: Finished difference Result 45690 states and 56235 transitions. [2021-11-04 08:24:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:24:19,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-04 08:24:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:24:19,180 INFO L225 Difference]: With dead ends: 45690 [2021-11-04 08:24:19,181 INFO L226 Difference]: Without dead ends: 22873 [2021-11-04 08:24:19,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:24:19,244 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 28020 mSDsCounter, 0 mSdLazyCounter, 56259 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61085.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 56266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.66ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70163.39ms IncrementalHoareTripleChecker+Time [2021-11-04 08:24:19,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 56266 Unknown, 0 Unchecked, 72.66ms Time], IncrementalHoareTripleChecker [6 Valid, 56259 Invalid, 1 Unknown, 0 Unchecked, 70163.39ms Time] [2021-11-04 08:24:19,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22873 states. [2021-11-04 08:24:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22873 to 22873. [2021-11-04 08:24:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22873 states, 22856 states have (on average 1.231011550577529) internal successors, (28136), 22867 states have internal predecessors, (28136), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-04 08:24:19,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22873 states to 22873 states and 28144 transitions. [2021-11-04 08:24:19,872 INFO L78 Accepts]: Start accepts. Automaton has 22873 states and 28144 transitions. Word has length 82 [2021-11-04 08:24:19,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:24:19,873 INFO L470 AbstractCegarLoop]: Abstraction has 22873 states and 28144 transitions. [2021-11-04 08:24:19,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:24:19,876 INFO L276 IsEmpty]: Start isEmpty. Operand 22873 states and 28144 transitions. [2021-11-04 08:24:19,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-04 08:24:19,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:24:19,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:24:19,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 08:24:19,877 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 08:24:19,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:24:19,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1310949471, now seen corresponding path program 1 times [2021-11-04 08:24:19,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:24:19,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605234338] [2021-11-04 08:24:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:24:19,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:24:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:24:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 08:24:20,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:24:20,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605234338] [2021-11-04 08:24:20,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605234338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:24:20,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:24:20,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:24:20,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410576469] [2021-11-04 08:24:20,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:24:20,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:24:20,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:24:20,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:24:20,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:24:20,154 INFO L87 Difference]: Start difference. First operand 22873 states and 28144 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:24:29,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:24:32,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:24:38,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:24:42,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:24:55,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:24:59,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:25:01,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:25:03,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:25:50,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:25:50,862 INFO L93 Difference]: Finished difference Result 45691 states and 56232 transitions. [2021-11-04 08:25:50,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:25:50,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-04 08:25:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:25:50,924 INFO L225 Difference]: With dead ends: 45691 [2021-11-04 08:25:50,925 INFO L226 Difference]: Without dead ends: 22874 [2021-11-04 08:25:50,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:25:50,970 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 28020 mSDsCounter, 0 mSdLazyCounter, 56260 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77491.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 56263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56260 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89653.15ms IncrementalHoareTripleChecker+Time [2021-11-04 08:25:50,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 56263 Unknown, 0 Unchecked, 76.00ms Time], IncrementalHoareTripleChecker [0 Valid, 56260 Invalid, 3 Unknown, 0 Unchecked, 89653.15ms Time] [2021-11-04 08:25:51,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22874 states. [2021-11-04 08:25:51,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22874 to 22874. [2021-11-04 08:25:51,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22874 states, 22857 states have (on average 1.2310014437590235) internal successors, (28137), 22868 states have internal predecessors, (28137), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-04 08:25:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22874 states to 22874 states and 28145 transitions. [2021-11-04 08:25:51,390 INFO L78 Accepts]: Start accepts. Automaton has 22874 states and 28145 transitions. Word has length 86 [2021-11-04 08:25:51,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:25:51,391 INFO L470 AbstractCegarLoop]: Abstraction has 22874 states and 28145 transitions. [2021-11-04 08:25:51,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:25:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 22874 states and 28145 transitions. [2021-11-04 08:25:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-04 08:25:51,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:25:51,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:25:51,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 08:25:51,393 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 08:25:51,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:25:51,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2121114806, now seen corresponding path program 1 times [2021-11-04 08:25:51,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:25:51,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694529117] [2021-11-04 08:25:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:25:51,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:25:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:25:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-04 08:25:51,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:25:51,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694529117] [2021-11-04 08:25:51,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694529117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:25:51,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:25:51,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:25:51,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058670931] [2021-11-04 08:25:51,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:25:51,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:25:51,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:25:51,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:25:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:25:51,638 INFO L87 Difference]: Start difference. First operand 22874 states and 28145 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:26:05,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:26:12,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:26:30,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:28:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:28:05,292 INFO L93 Difference]: Finished difference Result 45681 states and 56219 transitions. [2021-11-04 08:28:05,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:28:05,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-04 08:28:05,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:28:05,361 INFO L225 Difference]: With dead ends: 45681 [2021-11-04 08:28:05,361 INFO L226 Difference]: Without dead ends: 22875 [2021-11-04 08:28:05,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:28:05,421 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 28020 mSDsCounter, 0 mSdLazyCounter, 56262 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103871.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 56263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56262 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132002.80ms IncrementalHoareTripleChecker+Time [2021-11-04 08:28:05,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 56263 Unknown, 0 Unchecked, 120.90ms Time], IncrementalHoareTripleChecker [0 Valid, 56262 Invalid, 1 Unknown, 0 Unchecked, 132002.80ms Time] [2021-11-04 08:28:05,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22875 states. [2021-11-04 08:28:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22875 to 22875. [2021-11-04 08:28:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22875 states, 22858 states have (on average 1.2309913378248316) internal successors, (28138), 22869 states have internal predecessors, (28138), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-04 08:28:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22875 states to 22875 states and 28146 transitions. [2021-11-04 08:28:05,951 INFO L78 Accepts]: Start accepts. Automaton has 22875 states and 28146 transitions. Word has length 87 [2021-11-04 08:28:05,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:28:05,953 INFO L470 AbstractCegarLoop]: Abstraction has 22875 states and 28146 transitions. [2021-11-04 08:28:05,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:28:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 22875 states and 28146 transitions. [2021-11-04 08:28:05,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-04 08:28:05,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:28:05,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:28:05,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 08:28:05,959 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-04 08:28:05,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:28:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1499054535, now seen corresponding path program 1 times [2021-11-04 08:28:05,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:28:05,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727983622] [2021-11-04 08:28:05,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:28:05,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:28:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:28:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 08:28:06,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:28:06,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727983622] [2021-11-04 08:28:06,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727983622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:28:06,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:28:06,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:28:06,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650895086] [2021-11-04 08:28:06,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:28:06,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:28:06,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:28:06,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:28:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:28:06,290 INFO L87 Difference]: Start difference. First operand 22875 states and 28146 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:28:15,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:28:18,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:28:37,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:28:41,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 08:28:56,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:29:17,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:29:18,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:29:20,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:29:22,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:29:30,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:29:44,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []