./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0991342cd9e67cbadb964d86a1516812eb3aa45e84d4674c09b8e10a19f475c1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:03:28,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:03:28,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:03:28,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:03:28,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:03:28,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:03:28,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:03:28,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:03:28,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:03:28,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:03:28,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:03:28,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:03:28,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:03:28,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:03:28,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:03:28,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:03:28,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:03:28,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:03:28,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:03:28,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:03:28,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:03:28,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:03:28,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:03:28,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:03:28,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:03:28,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:03:28,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:03:28,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:03:28,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:03:28,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:03:28,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:03:28,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:03:28,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:03:28,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:03:28,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:03:28,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:03:28,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:03:28,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:03:28,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:03:28,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:03:28,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:03:28,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:03:28,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:03:28,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:03:28,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:03:28,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:03:28,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:03:28,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:03:28,674 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:03:28,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:03:28,674 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:03:28,674 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:03:28,675 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:03:28,676 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:03:28,676 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:03:28,676 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:03:28,676 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:03:28,677 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:03:28,677 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:03:28,677 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:03:28,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:03:28,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:03:28,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:03:28,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:03:28,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:03:28,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:03:28,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:03:28,681 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:03:28,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:03:28,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:03:28,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:03:28,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:28,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:03:28,682 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:03:28,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:03:28,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:03:28,684 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:03:28,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:03:28,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:03:28,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:03:28,684 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0991342cd9e67cbadb964d86a1516812eb3aa45e84d4674c09b8e10a19f475c1 [2022-11-19 07:03:28,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:03:28,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:03:28,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:03:28,986 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:03:28,987 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:03:28,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i [2022-11-19 07:03:29,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/data/d79d094e5/25031d40fee14f7283c937cce918476d/FLAG4b8c39ff9 [2022-11-19 07:03:30,079 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:03:30,080 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i [2022-11-19 07:03:30,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/data/d79d094e5/25031d40fee14f7283c937cce918476d/FLAG4b8c39ff9 [2022-11-19 07:03:30,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/data/d79d094e5/25031d40fee14f7283c937cce918476d [2022-11-19 07:03:30,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:03:30,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:03:30,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:30,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:03:30,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:03:30,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:30" (1/1) ... [2022-11-19 07:03:30,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b464162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:30, skipping insertion in model container [2022-11-19 07:03:30,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:30" (1/1) ... [2022-11-19 07:03:30,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:03:30,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:03:33,241 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i[339370,339383] [2022-11-19 07:03:33,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:33,443 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:03:34,004 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i[339370,339383] [2022-11-19 07:03:34,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:34,145 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:03:34,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34 WrapperNode [2022-11-19 07:03:34,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:34,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:34,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:03:34,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:03:34,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (1/1) ... [2022-11-19 07:03:34,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (1/1) ... [2022-11-19 07:03:34,677 INFO L138 Inliner]: procedures = 326, calls = 4517, calls flagged for inlining = 131, calls inlined = 121, statements flattened = 9110 [2022-11-19 07:03:34,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:34,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:03:34,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:03:34,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:03:34,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (1/1) ... [2022-11-19 07:03:34,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (1/1) ... [2022-11-19 07:03:34,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (1/1) ... [2022-11-19 07:03:34,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (1/1) ... [2022-11-19 07:03:35,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (1/1) ... [2022-11-19 07:03:35,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (1/1) ... [2022-11-19 07:03:35,149 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (1/1) ... [2022-11-19 07:03:35,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (1/1) ... [2022-11-19 07:03:35,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:03:35,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:03:35,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:03:35,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:03:35,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (1/1) ... [2022-11-19 07:03:35,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:35,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:35,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:03:35,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14484c55-e739-4cdd-ae93-45174ffe1627/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:03:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_ohci [2022-11-19 07:03:35,401 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_ohci [2022-11-19 07:03:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 07:03:35,401 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 07:03:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-11-19 07:03:35,401 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-11-19 07:03:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2022-11-19 07:03:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2022-11-19 07:03:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure start_ed_unlink [2022-11-19 07:03:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure start_ed_unlink [2022-11-19 07:03:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_status [2022-11-19 07:03:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_status [2022-11-19 07:03:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2022-11-19 07:03:35,403 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2022-11-19 07:03:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_suspend [2022-11-19 07:03:35,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_suspend [2022-11-19 07:03:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2022-11-19 07:03:35,403 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2022-11-19 07:03:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure show_list [2022-11-19 07:03:35,404 INFO L138 BoogieDeclarations]: Found implementation of procedure show_list [2022-11-19 07:03:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_probe [2022-11-19 07:03:35,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_probe [2022-11-19 07:03:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:03:35,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:03:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-19 07:03:35,405 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-19 07:03:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpup [2022-11-19 07:03:35,405 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpup [2022-11-19 07:03:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure hcfs2string [2022-11-19 07:03:35,405 INFO L138 BoogieDeclarations]: Found implementation of procedure hcfs2string [2022-11-19 07:03:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_zfmicro [2022-11-19 07:03:35,406 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_zfmicro [2022-11-19 07:03:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure usb_disabled [2022-11-19 07:03:35,406 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_disabled [2022-11-19 07:03:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hub_status_data [2022-11-19 07:03:35,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hub_status_data [2022-11-19 07:03:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_pci_reset [2022-11-19 07:03:35,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_pci_reset [2022-11-19 07:03:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_shutdown [2022-11-19 07:03:35,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_shutdown [2022-11-19 07:03:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:03:35,408 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:03:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:03:35,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:03:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_intr_mask [2022-11-19 07:03:35,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_intr_mask [2022-11-19 07:03:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_buffer [2022-11-19 07:03:35,409 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_buffer [2022-11-19 07:03:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure _ohci_writel [2022-11-19 07:03:35,411 INFO L138 BoogieDeclarations]: Found implementation of procedure _ohci_writel [2022-11-19 07:03:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:03:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:03:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:03:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:03:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hwPSWp [2022-11-19 07:03:35,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hwPSWp [2022-11-19 07:03:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_resume [2022-11-19 07:03:35,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_resume [2022-11-19 07:03:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_suspend [2022-11-19 07:03:35,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_suspend [2022-11-19 07:03:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure debug_output [2022-11-19 07:03:35,414 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_output [2022-11-19 07:03:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:03:35,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:03:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:03:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:03:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure ed_schedule [2022-11-19 07:03:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_schedule [2022-11-19 07:03:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hcd_init [2022-11-19 07:03:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hcd_init [2022-11-19 07:03:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_roothub [2022-11-19 07:03:35,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_roothub [2022-11-19 07:03:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2022-11-19 07:03:35,417 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2022-11-19 07:03:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 07:03:35,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 07:03:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:03:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_stop [2022-11-19 07:03:35,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_stop [2022-11-19 07:03:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:03:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:03:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:03:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2022-11-19 07:03:35,419 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2022-11-19 07:03:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_pci_remove [2022-11-19 07:03:35,419 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_pci_remove [2022-11-19 07:03:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure check_ed [2022-11-19 07:03:35,420 INFO L138 BoogieDeclarations]: Found implementation of procedure check_ed [2022-11-19 07:03:35,420 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_restart [2022-11-19 07:03:35,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_restart [2022-11-19 07:03:35,421 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_nec [2022-11-19 07:03:35,421 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_nec [2022-11-19 07:03:35,422 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:03:35,422 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:03:35,422 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2022-11-19 07:03:35,422 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2022-11-19 07:03:35,422 INFO L130 BoogieDeclarations]: Found specification of procedure td_free [2022-11-19 07:03:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure td_free [2022-11-19 07:03:35,423 INFO L130 BoogieDeclarations]: Found specification of procedure broken_suspend [2022-11-19 07:03:35,423 INFO L138 BoogieDeclarations]: Found implementation of procedure broken_suspend [2022-11-19 07:03:35,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:03:35,423 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_rh_resume [2022-11-19 07:03:35,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_rh_resume [2022-11-19 07:03:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_platform_shutdown [2022-11-19 07:03:35,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_platform_shutdown [2022-11-19 07:03:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:03:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_portstatus [2022-11-19 07:03:35,425 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_portstatus [2022-11-19 07:03:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-19 07:03:35,425 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-19 07:03:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hc_died [2022-11-19 07:03:35,429 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hc_died [2022-11-19 07:03:35,429 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_remove [2022-11-19 07:03:35,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_remove [2022-11-19 07:03:35,429 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-19 07:03:35,430 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-19 07:03:35,431 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 07:03:35,433 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 07:03:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-19 07:03:35,433 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-19 07:03:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:03:35,439 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:03:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:03:35,439 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:03:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 07:03:35,439 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 07:03:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_resume [2022-11-19 07:03:35,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_resume [2022-11-19 07:03:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure ed_free [2022-11-19 07:03:35,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_free [2022-11-19 07:03:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 07:03:35,440 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 07:03:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2022-11-19 07:03:35,440 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2022-11-19 07:03:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_start [2022-11-19 07:03:35,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_start [2022-11-19 07:03:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump [2022-11-19 07:03:35,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump [2022-11-19 07:03:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_frame_no [2022-11-19 07:03:35,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_frame_no [2022-11-19 07:03:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:03:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:03:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-19 07:03:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-19 07:03:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 07:03:35,443 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 07:03:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure sb800_prefetch [2022-11-19 07:03:35,443 INFO L138 BoogieDeclarations]: Found implementation of procedure sb800_prefetch [2022-11-19 07:03:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hub_control [2022-11-19 07:03:35,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hub_control [2022-11-19 07:03:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_unlink_urb_from_ep [2022-11-19 07:03:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_unlink_urb_from_ep [2022-11-19 07:03:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:03:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure finish_urb [2022-11-19 07:03:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_urb [2022-11-19 07:03:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_rh_suspend [2022-11-19 07:03:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_rh_suspend [2022-11-19 07:03:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_a [2022-11-19 07:03:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_a [2022-11-19 07:03:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_irq [2022-11-19 07:03:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_irq [2022-11-19 07:03:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure rh_state_string [2022-11-19 07:03:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure rh_state_string [2022-11-19 07:03:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_b [2022-11-19 07:03:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_b [2022-11-19 07:03:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_urb_enqueue [2022-11-19 07:03:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_urb_enqueue [2022-11-19 07:03:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_start_port_reset [2022-11-19 07:03:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_start_port_reset [2022-11-19 07:03:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_to_hcd [2022-11-19 07:03:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_to_hcd [2022-11-19 07:03:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_pci_start [2022-11-19 07:03:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_pci_start [2022-11-19 07:03:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure td_alloc [2022-11-19 07:03:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure td_alloc [2022-11-19 07:03:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure find_head [2022-11-19 07:03:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure find_head [2022-11-19 07:03:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:03:35,447 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:03:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_run [2022-11-19 07:03:35,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_run [2022-11-19 07:03:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-19 07:03:35,448 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-19 07:03:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_endpoint_disable [2022-11-19 07:03:35,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_endpoint_disable [2022-11-19 07:03:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:03:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure takeback_td [2022-11-19 07:03:35,449 INFO L138 BoogieDeclarations]: Found implementation of procedure takeback_td [2022-11-19 07:03:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_amdprefetch [2022-11-19 07:03:35,449 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_amdprefetch [2022-11-19 07:03:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-19 07:03:35,449 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-19 07:03:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:03:35,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:03:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure _ohci_readl [2022-11-19 07:03:35,450 INFO L138 BoogieDeclarations]: Found implementation of procedure _ohci_readl [2022-11-19 07:03:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:03:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2022-11-19 07:03:35,450 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2022-11-19 07:03:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure dl_done_list [2022-11-19 07:03:35,450 INFO L138 BoogieDeclarations]: Found implementation of procedure dl_done_list [2022-11-19 07:03:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_poll_rh_status [2022-11-19 07:03:35,451 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_poll_rh_status [2022-11-19 07:03:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-19 07:03:35,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-19 07:03:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:03:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_reinit [2022-11-19 07:03:35,451 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_reinit [2022-11-19 07:03:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2022-11-19 07:03:35,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2022-11-19 07:03:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:03:35,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:03:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:03:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure td_done [2022-11-19 07:03:35,452 INFO L138 BoogieDeclarations]: Found implementation of procedure td_done [2022-11-19 07:03:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure td_fill [2022-11-19 07:03:35,453 INFO L138 BoogieDeclarations]: Found implementation of procedure td_fill [2022-11-19 07:03:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_urb_dequeue [2022-11-19 07:03:35,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_urb_dequeue [2022-11-19 07:03:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:03:35,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:03:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_init [2022-11-19 07:03:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_init [2022-11-19 07:03:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-19 07:03:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-19 07:03:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc16 [2022-11-19 07:03:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc16 [2022-11-19 07:03:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:03:35,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:03:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_amdiso [2022-11-19 07:03:35,455 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_amdiso [2022-11-19 07:03:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2022-11-19 07:03:35,455 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2022-11-19 07:03:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 07:03:35,455 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 07:03:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure ed_deschedule [2022-11-19 07:03:35,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_deschedule [2022-11-19 07:03:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_resume_root_hub [2022-11-19 07:03:35,460 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_resume_root_hub [2022-11-19 07:03:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure urb_free_priv [2022-11-19 07:03:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_free_priv [2022-11-19 07:03:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure finish_unlinks [2022-11-19 07:03:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_unlinks [2022-11-19 07:03:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpu [2022-11-19 07:03:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpu [2022-11-19 07:03:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2022-11-19 07:03:35,462 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2022-11-19 07:03:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_status [2022-11-19 07:03:35,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_status [2022-11-19 07:03:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure maybe_print_eds [2022-11-19 07:03:35,464 INFO L138 BoogieDeclarations]: Found implementation of procedure maybe_print_eds [2022-11-19 07:03:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure debug_close [2022-11-19 07:03:35,464 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_close [2022-11-19 07:03:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_get_frame [2022-11-19 07:03:35,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_get_frame [2022-11-19 07:03:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2022-11-19 07:03:35,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2022-11-19 07:03:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:03:35,465 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:03:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-19 07:03:35,465 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-19 07:03:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc32 [2022-11-19 07:03:35,466 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc32 [2022-11-19 07:03:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 07:03:35,466 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 07:03:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_usb_reset [2022-11-19 07:03:35,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_usb_reset [2022-11-19 07:03:35,466 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_bus_resume [2022-11-19 07:03:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_bus_resume [2022-11-19 07:03:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-19 07:03:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-19 07:03:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:03:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:03:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_bus_suspend [2022-11-19 07:03:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_bus_suspend [2022-11-19 07:03:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_reset [2022-11-19 07:03:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_reset [2022-11-19 07:03:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_pci_shutdown [2022-11-19 07:03:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_pci_shutdown [2022-11-19 07:03:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:03:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:03:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:03:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2022-11-19 07:03:35,469 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2022-11-19 07:03:36,759 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:03:36,767 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:03:48,364 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:03:53,377 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:03:53,377 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 07:03:53,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:03:53 BoogieIcfgContainer [2022-11-19 07:03:53,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:03:53,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:03:53,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:03:53,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:03:53,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:03:30" (1/3) ... [2022-11-19 07:03:53,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0da20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:03:53, skipping insertion in model container [2022-11-19 07:03:53,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:34" (2/3) ... [2022-11-19 07:03:53,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0da20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:03:53, skipping insertion in model container [2022-11-19 07:03:53,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:03:53" (3/3) ... [2022-11-19 07:03:53,400 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i [2022-11-19 07:03:53,420 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:03:53,420 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:03:53,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:03:53,579 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@354c0b4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:03:53,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:03:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 2671 states, 1689 states have (on average 1.3718176435760805) internal successors, (2317), 1760 states have internal predecessors, (2317), 848 states have call successors, (848), 136 states have call predecessors, (848), 136 states have return successors, (848), 839 states have call predecessors, (848), 848 states have call successors, (848) [2022-11-19 07:03:53,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:03:53,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:53,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:53,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:53,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:53,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1534275465, now seen corresponding path program 1 times [2022-11-19 07:03:53,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:53,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996321280] [2022-11-19 07:03:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:53,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:54,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:54,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996321280] [2022-11-19 07:03:54,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996321280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:54,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:54,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:03:54,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891887299] [2022-11-19 07:03:54,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:54,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:03:54,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:03:54,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:54,796 INFO L87 Difference]: Start difference. First operand has 2671 states, 1689 states have (on average 1.3718176435760805) internal successors, (2317), 1760 states have internal predecessors, (2317), 848 states have call successors, (848), 136 states have call predecessors, (848), 136 states have return successors, (848), 839 states have call predecessors, (848), 848 states have call successors, (848) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:03:58,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:58,820 INFO L93 Difference]: Finished difference Result 7968 states and 12128 transitions. [2022-11-19 07:03:58,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:03:58,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 07:03:58,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:58,878 INFO L225 Difference]: With dead ends: 7968 [2022-11-19 07:03:58,878 INFO L226 Difference]: Without dead ends: 5292 [2022-11-19 07:03:58,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:58,906 INFO L413 NwaCegarLoop]: 4472 mSDtfsCounter, 3947 mSDsluCounter, 3613 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3947 SdHoareTripleChecker+Valid, 8085 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:58,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3947 Valid, 8085 Invalid, 726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-19 07:03:58,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2022-11-19 07:03:59,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 5276. [2022-11-19 07:03:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5276 states, 3327 states have (on average 1.3694018635407275) internal successors, (4556), 3462 states have internal predecessors, (4556), 1678 states have call successors, (1678), 271 states have call predecessors, (1678), 270 states have return successors, (1672), 1652 states have call predecessors, (1672), 1672 states have call successors, (1672) [2022-11-19 07:03:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 7906 transitions. [2022-11-19 07:03:59,377 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 7906 transitions. Word has length 12 [2022-11-19 07:03:59,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:59,378 INFO L495 AbstractCegarLoop]: Abstraction has 5276 states and 7906 transitions. [2022-11-19 07:03:59,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:03:59,378 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 7906 transitions. [2022-11-19 07:03:59,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:03:59,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:59,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:59,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:03:59,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:59,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:59,391 INFO L85 PathProgramCache]: Analyzing trace with hash -842638253, now seen corresponding path program 1 times [2022-11-19 07:03:59,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:59,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527842654] [2022-11-19 07:03:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:59,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:59,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:59,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527842654] [2022-11-19 07:03:59,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527842654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:59,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:59,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:03:59,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127173338] [2022-11-19 07:03:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:59,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:03:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:03:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:59,932 INFO L87 Difference]: Start difference. First operand 5276 states and 7906 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:04:04,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:04,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:04,882 INFO L93 Difference]: Finished difference Result 15793 states and 23658 transitions. [2022-11-19 07:04:04,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:04,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 07:04:04,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:04,983 INFO L225 Difference]: With dead ends: 15793 [2022-11-19 07:04:04,983 INFO L226 Difference]: Without dead ends: 10518 [2022-11-19 07:04:05,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:05,030 INFO L413 NwaCegarLoop]: 4496 mSDtfsCounter, 3941 mSDsluCounter, 3610 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3941 SdHoareTripleChecker+Valid, 8106 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:05,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3941 Valid, 8106 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-19 07:04:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10518 states. [2022-11-19 07:04:05,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10518 to 10502. [2022-11-19 07:04:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10502 states, 6619 states have (on average 1.3680314246865086) internal successors, (9055), 6886 states have internal predecessors, (9055), 3342 states have call successors, (3342), 541 states have call predecessors, (3342), 540 states have return successors, (3336), 3294 states have call predecessors, (3336), 3336 states have call successors, (3336) [2022-11-19 07:04:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 15733 transitions. [2022-11-19 07:04:05,941 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 15733 transitions. Word has length 14 [2022-11-19 07:04:05,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:05,941 INFO L495 AbstractCegarLoop]: Abstraction has 10502 states and 15733 transitions. [2022-11-19 07:04:05,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:04:05,943 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 15733 transitions. [2022-11-19 07:04:05,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:04:05,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:05,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:05,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:04:05,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:05,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1943254409, now seen corresponding path program 1 times [2022-11-19 07:04:05,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:05,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952055687] [2022-11-19 07:04:05,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:06,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:06,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952055687] [2022-11-19 07:04:06,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952055687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:06,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:06,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:04:06,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838869967] [2022-11-19 07:04:06,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:06,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:06,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:06,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:06,518 INFO L87 Difference]: Start difference. First operand 10502 states and 15733 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:04:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:10,620 INFO L93 Difference]: Finished difference Result 31400 states and 47037 transitions. [2022-11-19 07:04:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:10,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-19 07:04:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:10,804 INFO L225 Difference]: With dead ends: 31400 [2022-11-19 07:04:10,804 INFO L226 Difference]: Without dead ends: 20899 [2022-11-19 07:04:10,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:10,880 INFO L413 NwaCegarLoop]: 4906 mSDtfsCounter, 3939 mSDsluCounter, 3610 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 8516 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:10,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3939 Valid, 8516 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 07:04:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20899 states. [2022-11-19 07:04:12,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20899 to 20883. [2022-11-19 07:04:12,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20883 states, 13155 states have (on average 1.3668567084758647) internal successors, (17981), 13685 states have internal predecessors, (17981), 6654 states have call successors, (6654), 1074 states have call predecessors, (6654), 1073 states have return successors, (6648), 6562 states have call predecessors, (6648), 6648 states have call successors, (6648) [2022-11-19 07:04:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20883 states to 20883 states and 31283 transitions. [2022-11-19 07:04:12,457 INFO L78 Accepts]: Start accepts. Automaton has 20883 states and 31283 transitions. Word has length 16 [2022-11-19 07:04:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:12,457 INFO L495 AbstractCegarLoop]: Abstraction has 20883 states and 31283 transitions. [2022-11-19 07:04:12,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:04:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 20883 states and 31283 transitions. [2022-11-19 07:04:12,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:04:12,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:12,461 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:04:12,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:04:12,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:12,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:12,462 INFO L85 PathProgramCache]: Analyzing trace with hash -164963286, now seen corresponding path program 1 times [2022-11-19 07:04:12,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:12,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324015048] [2022-11-19 07:04:12,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:12,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:12,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:12,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324015048] [2022-11-19 07:04:12,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324015048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:12,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:12,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:04:12,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663357753] [2022-11-19 07:04:12,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:12,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:12,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:12,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:12,939 INFO L87 Difference]: Start difference. First operand 20883 states and 31283 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:04:15,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:15,347 INFO L93 Difference]: Finished difference Result 20885 states and 31284 transitions. [2022-11-19 07:04:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:15,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-11-19 07:04:15,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:15,508 INFO L225 Difference]: With dead ends: 20885 [2022-11-19 07:04:15,508 INFO L226 Difference]: Without dead ends: 20882 [2022-11-19 07:04:15,526 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:04:15,531 INFO L413 NwaCegarLoop]: 3620 mSDtfsCounter, 3956 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3956 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:15,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3956 Valid, 3620 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-19 07:04:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20882 states. [2022-11-19 07:04:16,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20882 to 20882. [2022-11-19 07:04:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20882 states, 13155 states have (on average 1.3667806917521854) internal successors, (17980), 13684 states have internal predecessors, (17980), 6653 states have call successors, (6653), 1074 states have call predecessors, (6653), 1073 states have return successors, (6648), 6562 states have call predecessors, (6648), 6648 states have call successors, (6648) [2022-11-19 07:04:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20882 states to 20882 states and 31281 transitions. [2022-11-19 07:04:17,140 INFO L78 Accepts]: Start accepts. Automaton has 20882 states and 31281 transitions. Word has length 25 [2022-11-19 07:04:17,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:17,141 INFO L495 AbstractCegarLoop]: Abstraction has 20882 states and 31281 transitions. [2022-11-19 07:04:17,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:04:17,141 INFO L276 IsEmpty]: Start isEmpty. Operand 20882 states and 31281 transitions. [2022-11-19 07:04:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 07:04:17,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:17,146 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:04:17,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:04:17,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:17,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:17,148 INFO L85 PathProgramCache]: Analyzing trace with hash -820370995, now seen corresponding path program 1 times [2022-11-19 07:04:17,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:17,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849965522] [2022-11-19 07:04:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:17,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:17,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:17,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849965522] [2022-11-19 07:04:17,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849965522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:17,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:17,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:04:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406405488] [2022-11-19 07:04:17,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:17,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:17,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:17,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:17,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:17,609 INFO L87 Difference]: Start difference. First operand 20882 states and 31281 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:04:19,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:19,916 INFO L93 Difference]: Finished difference Result 20884 states and 31282 transitions. [2022-11-19 07:04:19,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:19,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-11-19 07:04:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:20,028 INFO L225 Difference]: With dead ends: 20884 [2022-11-19 07:04:20,028 INFO L226 Difference]: Without dead ends: 20881 [2022-11-19 07:04:20,039 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:04:20,040 INFO L413 NwaCegarLoop]: 3618 mSDtfsCounter, 3953 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3953 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:20,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3953 Valid, 3618 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 07:04:20,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20881 states. [2022-11-19 07:04:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20881 to 20881. [2022-11-19 07:04:21,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20881 states, 13155 states have (on average 1.3667046750285063) internal successors, (17979), 13683 states have internal predecessors, (17979), 6652 states have call successors, (6652), 1074 states have call predecessors, (6652), 1073 states have return successors, (6648), 6562 states have call predecessors, (6648), 6648 states have call successors, (6648) [2022-11-19 07:04:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20881 states to 20881 states and 31279 transitions. [2022-11-19 07:04:21,668 INFO L78 Accepts]: Start accepts. Automaton has 20881 states and 31279 transitions. Word has length 26 [2022-11-19 07:04:21,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:21,669 INFO L495 AbstractCegarLoop]: Abstraction has 20881 states and 31279 transitions. [2022-11-19 07:04:21,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:04:21,669 INFO L276 IsEmpty]: Start isEmpty. Operand 20881 states and 31279 transitions. [2022-11-19 07:04:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:04:21,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:21,674 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:04:21,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:04:21,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:21,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:21,675 INFO L85 PathProgramCache]: Analyzing trace with hash 336831373, now seen corresponding path program 1 times [2022-11-19 07:04:21,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:21,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375464955] [2022-11-19 07:04:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:21,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:22,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:22,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375464955] [2022-11-19 07:04:22,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375464955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:22,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:22,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:04:22,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337430228] [2022-11-19 07:04:22,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:22,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:22,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:22,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:22,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:22,178 INFO L87 Difference]: Start difference. First operand 20881 states and 31279 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:04:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:26,061 INFO L93 Difference]: Finished difference Result 32225 states and 47591 transitions. [2022-11-19 07:04:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:26,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-11-19 07:04:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:26,242 INFO L225 Difference]: With dead ends: 32225 [2022-11-19 07:04:26,242 INFO L226 Difference]: Without dead ends: 32221 [2022-11-19 07:04:26,262 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:04:26,263 INFO L413 NwaCegarLoop]: 4324 mSDtfsCounter, 3925 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3925 SdHoareTripleChecker+Valid, 6428 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:26,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3925 Valid, 6428 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:04:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32221 states. [2022-11-19 07:04:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32221 to 32219. [2022-11-19 07:04:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32219 states, 20085 states have (on average 1.3415484192183222) internal successors, (26945), 20870 states have internal predecessors, (26945), 10318 states have call successors, (10318), 1816 states have call predecessors, (10318), 1815 states have return successors, (10316), 10195 states have call predecessors, (10316), 10316 states have call successors, (10316) [2022-11-19 07:04:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32219 states to 32219 states and 47579 transitions. [2022-11-19 07:04:28,751 INFO L78 Accepts]: Start accepts. Automaton has 32219 states and 47579 transitions. Word has length 27 [2022-11-19 07:04:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:28,751 INFO L495 AbstractCegarLoop]: Abstraction has 32219 states and 47579 transitions. [2022-11-19 07:04:28,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:04:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 32219 states and 47579 transitions. [2022-11-19 07:04:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 07:04:28,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:28,755 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:04:28,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:04:28,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:28,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1850371280, now seen corresponding path program 1 times [2022-11-19 07:04:28,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:28,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73160682] [2022-11-19 07:04:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:28,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:29,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:29,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73160682] [2022-11-19 07:04:29,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73160682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:29,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:29,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:04:29,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198054133] [2022-11-19 07:04:29,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:29,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:04:29,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:29,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:04:29,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:04:29,155 INFO L87 Difference]: Start difference. First operand 32219 states and 47579 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:04:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:32,584 INFO L93 Difference]: Finished difference Result 32221 states and 47580 transitions. [2022-11-19 07:04:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:04:32,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-19 07:04:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:32,769 INFO L225 Difference]: With dead ends: 32221 [2022-11-19 07:04:32,770 INFO L226 Difference]: Without dead ends: 32148 [2022-11-19 07:04:32,796 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:04:32,797 INFO L413 NwaCegarLoop]: 3613 mSDtfsCounter, 3945 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3945 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:32,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3945 Valid, 3613 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-19 07:04:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32148 states. [2022-11-19 07:04:35,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32148 to 32148. [2022-11-19 07:04:35,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32148 states, 20055 states have (on average 1.3416105709299426) internal successors, (26906), 20832 states have internal predecessors, (26906), 10285 states have call successors, (10285), 1808 states have call predecessors, (10285), 1807 states have return successors, (10284), 10170 states have call predecessors, (10284), 10284 states have call successors, (10284) [2022-11-19 07:04:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32148 states to 32148 states and 47475 transitions. [2022-11-19 07:04:35,221 INFO L78 Accepts]: Start accepts. Automaton has 32148 states and 47475 transitions. Word has length 28 [2022-11-19 07:04:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:35,221 INFO L495 AbstractCegarLoop]: Abstraction has 32148 states and 47475 transitions. [2022-11-19 07:04:35,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:04:35,221 INFO L276 IsEmpty]: Start isEmpty. Operand 32148 states and 47475 transitions. [2022-11-19 07:04:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 07:04:35,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:35,235 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 07:04:35,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:04:35,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:35,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:35,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1408958467, now seen corresponding path program 1 times [2022-11-19 07:04:35,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:35,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543899045] [2022-11-19 07:04:35,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:35,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:35,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:35,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543899045] [2022-11-19 07:04:35,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543899045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:35,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:35,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:04:35,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254996440] [2022-11-19 07:04:35,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:35,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:04:35,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:35,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:04:35,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:04:35,886 INFO L87 Difference]: Start difference. First operand 32148 states and 47475 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:04:41,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:41,022 INFO L93 Difference]: Finished difference Result 64297 states and 94951 transitions. [2022-11-19 07:04:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:04:41,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-11-19 07:04:41,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:41,146 INFO L225 Difference]: With dead ends: 64297 [2022-11-19 07:04:41,146 INFO L226 Difference]: Without dead ends: 32148 [2022-11-19 07:04:41,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:04:41,273 INFO L413 NwaCegarLoop]: 3597 mSDtfsCounter, 1 mSDsluCounter, 7189 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10786 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:41,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10786 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-19 07:04:41,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32148 states. [2022-11-19 07:04:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32148 to 32148. [2022-11-19 07:04:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32148 states, 20055 states have (on average 1.3412116679132386) internal successors, (26898), 20832 states have internal predecessors, (26898), 10285 states have call successors, (10285), 1808 states have call predecessors, (10285), 1807 states have return successors, (10284), 10170 states have call predecessors, (10284), 10284 states have call successors, (10284) [2022-11-19 07:04:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32148 states to 32148 states and 47467 transitions. [2022-11-19 07:04:43,407 INFO L78 Accepts]: Start accepts. Automaton has 32148 states and 47467 transitions. Word has length 42 [2022-11-19 07:04:43,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:43,407 INFO L495 AbstractCegarLoop]: Abstraction has 32148 states and 47467 transitions. [2022-11-19 07:04:43,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:04:43,408 INFO L276 IsEmpty]: Start isEmpty. Operand 32148 states and 47467 transitions. [2022-11-19 07:04:43,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:04:43,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:43,428 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 07:04:43,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:04:43,428 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:43,429 INFO L85 PathProgramCache]: Analyzing trace with hash -829354993, now seen corresponding path program 1 times [2022-11-19 07:04:43,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:43,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585372365] [2022-11-19 07:04:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:43,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:44,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:44,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585372365] [2022-11-19 07:04:44,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585372365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:44,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:44,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:04:44,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145499187] [2022-11-19 07:04:44,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:44,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:04:44,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:04:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:04:44,282 INFO L87 Difference]: Start difference. First operand 32148 states and 47467 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:04:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:51,453 INFO L93 Difference]: Finished difference Result 79542 states and 117491 transitions. [2022-11-19 07:04:51,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:04:51,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-11-19 07:04:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:51,662 INFO L225 Difference]: With dead ends: 79542 [2022-11-19 07:04:51,662 INFO L226 Difference]: Without dead ends: 47395 [2022-11-19 07:04:51,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:04:51,763 INFO L413 NwaCegarLoop]: 7049 mSDtfsCounter, 3932 mSDsluCounter, 7160 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3932 SdHoareTripleChecker+Valid, 14209 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:51,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3932 Valid, 14209 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-19 07:04:51,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47395 states. [2022-11-19 07:04:54,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47395 to 47389. [2022-11-19 07:04:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47389 states, 29581 states have (on average 1.3419086575842603) internal successors, (39695), 30728 states have internal predecessors, (39695), 15153 states have call successors, (15153), 2655 states have call predecessors, (15153), 2654 states have return successors, (15152), 14983 states have call predecessors, (15152), 15152 states have call successors, (15152) [2022-11-19 07:04:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47389 states to 47389 states and 70000 transitions. [2022-11-19 07:04:54,580 INFO L78 Accepts]: Start accepts. Automaton has 47389 states and 70000 transitions. Word has length 60 [2022-11-19 07:04:54,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:54,581 INFO L495 AbstractCegarLoop]: Abstraction has 47389 states and 70000 transitions. [2022-11-19 07:04:54,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:04:54,581 INFO L276 IsEmpty]: Start isEmpty. Operand 47389 states and 70000 transitions. [2022-11-19 07:04:54,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-19 07:04:54,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:54,597 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 07:04:54,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:04:54,598 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:54,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:54,598 INFO L85 PathProgramCache]: Analyzing trace with hash 333972139, now seen corresponding path program 1 times [2022-11-19 07:04:54,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:54,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497268011] [2022-11-19 07:04:54,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:54,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:55,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:55,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497268011] [2022-11-19 07:04:55,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497268011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:55,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:55,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:04:55,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895947361] [2022-11-19 07:04:55,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:55,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:04:55,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:55,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:04:55,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:04:55,300 INFO L87 Difference]: Start difference. First operand 47389 states and 70000 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)