./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH --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 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:08:24,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:08:24,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:08:24,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:08:24,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:08:24,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:08:24,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:08:24,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:08:24,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:08:24,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:08:24,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:08:24,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:08:24,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:08:24,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:08:24,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:08:24,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:08:24,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:08:24,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:08:24,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:08:24,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:08:24,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:08:24,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:08:24,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:08:24,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:08:24,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:08:24,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:08:24,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:08:24,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:08:24,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:08:24,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:08:24,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:08:24,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:08:24,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:08:24,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:08:24,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:08:24,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:08:24,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:08:24,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:08:24,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:08:24,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:08:24,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:08:24,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 05:08:24,695 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:08:24,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:08:24,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:08:24,697 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:08:24,700 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:08:24,701 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:08:24,701 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:08:24,701 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:08:24,701 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:08:24,702 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:08:24,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:08:24,702 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:08:24,702 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:08:24,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:08:24,707 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:08:24,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:08:24,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:08:24,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:08:24,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:08:24,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:08:24,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:08:24,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:08:24,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:08:24,710 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:08:24,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:08:24,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:08:24,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:08:24,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:08:24,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:08:24,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:08:24,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:08:24,714 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:08:24,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:08:24,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:08:24,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:08:24,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:08:24,715 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2021-11-03 05:08:24,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:08:24,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:08:24,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:08:24,973 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:08:24,974 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:08:24,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-03 05:08:25,039 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/data/2c4d8c221/6498db8fe57447368abfccfce1ecc3c6/FLAGf571df12b [2021-11-03 05:08:25,894 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:08:25,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-03 05:08:25,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/data/2c4d8c221/6498db8fe57447368abfccfce1ecc3c6/FLAGf571df12b [2021-11-03 05:08:26,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/data/2c4d8c221/6498db8fe57447368abfccfce1ecc3c6 [2021-11-03 05:08:26,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:08:26,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:08:26,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:08:26,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:08:26,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:08:26,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:08:26" (1/1) ... [2021-11-03 05:08:26,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33afa230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:26, skipping insertion in model container [2021-11-03 05:08:26,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:08:26" (1/1) ... [2021-11-03 05:08:26,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:08:26,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:08:27,899 WARN L228 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_cc8056e3-c467-4575-874d-75061984dbd8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-03 05:08:28,017 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:08:28,028 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:08:28,035 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:08:28,112 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:08:28,140 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:08:28,164 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:08:28,173 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:08:28,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:08:28,626 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 05:08:28,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b0acdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:28, skipping insertion in model container [2021-11-03 05:08:28,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:08:28,627 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:08:28,630 INFO L168 Benchmark]: Toolchain (without parser) took 2207.60 ms. Allocated memory was 119.5 MB in the beginning and 163.6 MB in the end (delta: 44.0 MB). Free memory was 78.8 MB in the beginning and 109.2 MB in the end (delta: -30.4 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:08:28,631 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 119.5 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:08:28,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2202.84 ms. Allocated memory was 119.5 MB in the beginning and 163.6 MB in the end (delta: 44.0 MB). Free memory was 78.5 MB in the beginning and 109.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:08:28,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 119.5 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2202.84 ms. Allocated memory was 119.5 MB in the beginning and 163.6 MB in the end (delta: 44.0 MB). Free memory was 78.5 MB in the beginning and 109.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4117]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH --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 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:08:30,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:08:30,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:08:31,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:08:31,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:08:31,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:08:31,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:08:31,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:08:31,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:08:31,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:08:31,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:08:31,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:08:31,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:08:31,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:08:31,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:08:31,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:08:31,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:08:31,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:08:31,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:08:31,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:08:31,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:08:31,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:08:31,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:08:31,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:08:31,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:08:31,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:08:31,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:08:31,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:08:31,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:08:31,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:08:31,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:08:31,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:08:31,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:08:31,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:08:31,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:08:31,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:08:31,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:08:31,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:08:31,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:08:31,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:08:31,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:08:31,111 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 05:08:31,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:08:31,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:08:31,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:08:31,157 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:08:31,157 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:08:31,157 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:08:31,157 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:08:31,158 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:08:31,158 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:08:31,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:08:31,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:08:31,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:08:31,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:08:31,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:08:31,162 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:08:31,162 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:08:31,162 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:08:31,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:08:31,162 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:08:31,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:08:31,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:08:31,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:08:31,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:08:31,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:08:31,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:08:31,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:08:31,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:08:31,164 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:08:31,165 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:08:31,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:08:31,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:08:31,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:08:31,166 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2021-11-03 05:08:31,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:08:31,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:08:31,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:08:31,604 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:08:31,605 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:08:31,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-03 05:08:31,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/data/79fab5018/6b4c5c43e94c47d7802e3d99404b0e3a/FLAGd8374c03c [2021-11-03 05:08:32,672 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:08:32,673 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-03 05:08:32,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/data/79fab5018/6b4c5c43e94c47d7802e3d99404b0e3a/FLAGd8374c03c [2021-11-03 05:08:33,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/data/79fab5018/6b4c5c43e94c47d7802e3d99404b0e3a [2021-11-03 05:08:33,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:08:33,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:08:33,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:08:33,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:08:33,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:08:33,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:08:33" (1/1) ... [2021-11-03 05:08:33,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@583e6171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:33, skipping insertion in model container [2021-11-03 05:08:33,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:08:33" (1/1) ... [2021-11-03 05:08:33,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:08:33,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:08:34,510 WARN L228 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_cc8056e3-c467-4575-874d-75061984dbd8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-03 05:08:35,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:08:35,180 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:08:35,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:08:35,404 WARN L228 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_cc8056e3-c467-4575-874d-75061984dbd8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-03 05:08:35,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:08:35,699 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:08:35,851 WARN L228 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_cc8056e3-c467-4575-874d-75061984dbd8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-03 05:08:36,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:08:36,269 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:08:36,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36 WrapperNode [2021-11-03 05:08:36,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:08:36,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:08:36,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:08:36,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:08:36,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36" (1/1) ... [2021-11-03 05:08:36,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36" (1/1) ... [2021-11-03 05:08:36,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:08:36,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:08:36,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:08:36,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:08:36,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36" (1/1) ... [2021-11-03 05:08:36,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36" (1/1) ... [2021-11-03 05:08:37,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36" (1/1) ... [2021-11-03 05:08:37,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36" (1/1) ... [2021-11-03 05:08:37,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36" (1/1) ... [2021-11-03 05:08:37,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36" (1/1) ... [2021-11-03 05:08:37,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36" (1/1) ... [2021-11-03 05:08:37,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:08:37,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:08:37,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:08:37,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:08:37,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36" (1/1) ... [2021-11-03 05:08:37,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:08:37,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:08:37,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:08:37,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:08:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:08:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 05:08:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:08:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 05:08:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 05:08:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 05:08:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-03 05:08:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-03 05:08:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:08:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:08:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:08:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-03 05:08:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 05:08:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 05:08:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 05:08:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:08:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:08:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 05:08:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 05:08:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:08:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 05:08:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 05:08:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-11-03 05:08:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-11-03 05:08:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2021-11-03 05:08:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2021-11-03 05:08:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2021-11-03 05:08:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2021-11-03 05:08:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 05:08:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 05:08:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 05:08:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 05:08:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2021-11-03 05:08:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2021-11-03 05:08:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:08:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:08:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 05:08:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 05:08:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-03 05:08:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-03 05:08:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 05:08:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2021-11-03 05:08:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2021-11-03 05:08:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2021-11-03 05:08:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2021-11-03 05:08:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 05:08:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:08:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:08:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2021-11-03 05:08:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2021-11-03 05:10:02,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:10:02,311 INFO L299 CfgBuilder]: Removed 1975 assume(true) statements. [2021-11-03 05:10:02,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:10:02 BoogieIcfgContainer [2021-11-03 05:10:02,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:10:02,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:10:02,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:10:02,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:10:02,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:08:33" (1/3) ... [2021-11-03 05:10:02,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eeda9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:10:02, skipping insertion in model container [2021-11-03 05:10:02,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:08:36" (2/3) ... [2021-11-03 05:10:02,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eeda9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:10:02, skipping insertion in model container [2021-11-03 05:10:02,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:10:02" (3/3) ... [2021-11-03 05:10:02,326 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-03 05:10:02,332 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:10:02,332 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-03 05:10:02,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:10:02,398 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:10:02,399 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-03 05:10:02,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 1922 states, 1880 states have (on average 1.373404255319149) internal successors, (2582), 1892 states have internal predecessors, (2582), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-03 05:10:02,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 05:10:02,467 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:10:02,468 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:10:02,469 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:10:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:10:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2106712065, now seen corresponding path program 1 times [2021-11-03 05:10:02,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:10:02,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024372733] [2021-11-03 05:10:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:02,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:10:02,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:10:02,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:10:02,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:10:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:09,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 4032 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:10:09,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:10:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:10,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:10:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:10,537 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:10:10,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024372733] [2021-11-03 05:10:10,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024372733] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:10:10,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:10:10,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:10:10,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183668859] [2021-11-03 05:10:10,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:10:10,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:10:10,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:10:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:10:10,571 INFO L87 Difference]: Start difference. First operand has 1922 states, 1880 states have (on average 1.373404255319149) internal successors, (2582), 1892 states have internal predecessors, (2582), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:10:10,999 INFO L93 Difference]: Finished difference Result 3843 states and 5280 transitions. [2021-11-03 05:10:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:10:11,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-03 05:10:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:10:11,036 INFO L225 Difference]: With dead ends: 3843 [2021-11-03 05:10:11,037 INFO L226 Difference]: Without dead ends: 1898 [2021-11-03 05:10:11,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:10:11,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2021-11-03 05:10:11,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1898. [2021-11-03 05:10:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1857 states have (on average 1.3058696822832525) internal successors, (2425), 1868 states have internal predecessors, (2425), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-03 05:10:11,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2471 transitions. [2021-11-03 05:10:11,217 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2471 transitions. Word has length 47 [2021-11-03 05:10:11,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:10:11,219 INFO L470 AbstractCegarLoop]: Abstraction has 1898 states and 2471 transitions. [2021-11-03 05:10:11,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2471 transitions. [2021-11-03 05:10:11,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 05:10:11,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:10:11,231 INFO L513 BasicCegarLoop]: 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] [2021-11-03 05:10:11,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:10:11,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:10:11,449 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:10:11,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:10:11,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1518525569, now seen corresponding path program 1 times [2021-11-03 05:10:11,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:10:11,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868247519] [2021-11-03 05:10:11,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:11,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:10:11,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:10:11,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:10:11,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:10:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:18,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:10:18,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:10:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:18,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:10:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:19,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:10:19,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868247519] [2021-11-03 05:10:19,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868247519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:10:19,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1932000457] [2021-11-03 05:10:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:19,778 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:10:19,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:10:19,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:10:19,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-03 05:10:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:22,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:10:22,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:10:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:10:23,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:10:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:10:23,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1932000457] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:10:23,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:10:23,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 05:10:23,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573768386] [2021-11-03 05:10:23,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:10:23,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:10:23,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:10:23,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:10:23,678 INFO L87 Difference]: Start difference. First operand 1898 states and 2471 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:27,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:10:27,436 INFO L93 Difference]: Finished difference Result 7026 states and 9254 transitions. [2021-11-03 05:10:27,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:10:27,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 05:10:27,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:10:27,472 INFO L225 Difference]: With dead ends: 7026 [2021-11-03 05:10:27,472 INFO L226 Difference]: Without dead ends: 5261 [2021-11-03 05:10:27,480 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:10:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2021-11-03 05:10:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5245. [2021-11-03 05:10:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5140 states have (on average 1.319260700389105) internal successors, (6781), 5157 states have internal predecessors, (6781), 69 states have call successors, (69), 27 states have call predecessors, (69), 27 states have return successors, (69), 63 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-03 05:10:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 6919 transitions. [2021-11-03 05:10:27,700 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 6919 transitions. Word has length 49 [2021-11-03 05:10:27,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:10:27,701 INFO L470 AbstractCegarLoop]: Abstraction has 5245 states and 6919 transitions. [2021-11-03 05:10:27,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 6919 transitions. [2021-11-03 05:10:27,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 05:10:27,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:10:27,706 INFO L513 BasicCegarLoop]: 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] [2021-11-03 05:10:27,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:10:27,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-11-03 05:10:28,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:10:28,109 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:10:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:10:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1541307876, now seen corresponding path program 1 times [2021-11-03 05:10:28,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:10:28,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410691790] [2021-11-03 05:10:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:28,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:10:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:10:28,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:10:28,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:10:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:35,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 4069 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:10:35,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:10:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:35,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:10:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:36,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:10:36,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410691790] [2021-11-03 05:10:36,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410691790] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:10:36,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [405027163] [2021-11-03 05:10:36,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:36,627 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:10:36,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:10:36,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:10:36,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-03 05:10:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:39,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 4069 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:10:39,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:10:41,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:10:41,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:10:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:10:43,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [405027163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:10:43,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:10:43,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-03 05:10:43,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799515004] [2021-11-03 05:10:43,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:10:43,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:10:43,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:10:43,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:10:43,055 INFO L87 Difference]: Start difference. First operand 5245 states and 6919 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:44,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:10:44,849 INFO L93 Difference]: Finished difference Result 15467 states and 20667 transitions. [2021-11-03 05:10:44,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:10:44,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 05:10:44,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:10:44,920 INFO L225 Difference]: With dead ends: 15467 [2021-11-03 05:10:44,921 INFO L226 Difference]: Without dead ends: 10355 [2021-11-03 05:10:44,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:10:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10355 states. [2021-11-03 05:10:45,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10355 to 10335. [2021-11-03 05:10:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10335 states, 10134 states have (on average 1.3184329978290903) internal successors, (13361), 10160 states have internal predecessors, (13361), 138 states have call successors, (138), 54 states have call predecessors, (138), 54 states have return successors, (207), 126 states have call predecessors, (207), 138 states have call successors, (207) [2021-11-03 05:10:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10335 states to 10335 states and 13706 transitions. [2021-11-03 05:10:45,396 INFO L78 Accepts]: Start accepts. Automaton has 10335 states and 13706 transitions. Word has length 57 [2021-11-03 05:10:45,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:10:45,399 INFO L470 AbstractCegarLoop]: Abstraction has 10335 states and 13706 transitions. [2021-11-03 05:10:45,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:10:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 10335 states and 13706 transitions. [2021-11-03 05:10:45,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 05:10:45,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:10:45,405 INFO L513 BasicCegarLoop]: 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] [2021-11-03 05:10:45,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:10:45,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:10:45,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:10:45,828 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:10:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:10:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash 535908222, now seen corresponding path program 1 times [2021-11-03 05:10:45,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:10:45,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766308391] [2021-11-03 05:10:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:45,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:10:45,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:10:45,844 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:10:45,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:10:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:52,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 4070 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:10:52,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:10:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:53,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:10:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:10:54,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:10:54,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766308391] [2021-11-03 05:10:54,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766308391] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:10:54,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [607180641] [2021-11-03 05:10:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:10:54,357 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:10:54,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:10:54,359 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:10:54,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-03 05:10:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:10:57,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 4070 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:10:57,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:10:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:10:59,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:11:00,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [607180641] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:11:00,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:11:00,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-03 05:11:00,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781607191] [2021-11-03 05:11:00,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:11:00,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:11:00,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:11:00,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:11:00,918 INFO L87 Difference]: Start difference. First operand 10335 states and 13706 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:01,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:11:01,496 INFO L93 Difference]: Finished difference Result 10335 states and 13706 transitions. [2021-11-03 05:11:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:11:01,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 05:11:01,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:11:01,578 INFO L225 Difference]: With dead ends: 10335 [2021-11-03 05:11:01,578 INFO L226 Difference]: Without dead ends: 10333 [2021-11-03 05:11:01,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:11:01,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10333 states. [2021-11-03 05:11:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10333 to 10333. [2021-11-03 05:11:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10333 states, 10133 states have (on average 1.3183657357149907) internal successors, (13359), 10158 states have internal predecessors, (13359), 138 states have call successors, (138), 54 states have call predecessors, (138), 54 states have return successors, (207), 126 states have call predecessors, (207), 138 states have call successors, (207) [2021-11-03 05:11:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10333 states to 10333 states and 13704 transitions. [2021-11-03 05:11:02,109 INFO L78 Accepts]: Start accepts. Automaton has 10333 states and 13704 transitions. Word has length 58 [2021-11-03 05:11:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:11:02,110 INFO L470 AbstractCegarLoop]: Abstraction has 10333 states and 13704 transitions. [2021-11-03 05:11:02,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 10333 states and 13704 transitions. [2021-11-03 05:11:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 05:11:02,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:02,113 INFO L513 BasicCegarLoop]: 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] [2021-11-03 05:11:02,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:02,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:02,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:11:02,540 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:11:02,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:02,541 INFO L85 PathProgramCache]: Analyzing trace with hash -566709970, now seen corresponding path program 1 times [2021-11-03 05:11:02,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:11:02,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283481216] [2021-11-03 05:11:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:02,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:11:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:11:02,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:11:02,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:11:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:09,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 4071 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:11:09,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:10,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:11,167 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:11:11,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283481216] [2021-11-03 05:11:11,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283481216] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:11:11,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1408330276] [2021-11-03 05:11:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:11,168 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:11:11,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:11:11,175 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:11:11,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 05:11:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:14,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 4071 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:11:14,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:11:15,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:11:16,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1408330276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:11:16,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:11:16,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:11:16,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628330791] [2021-11-03 05:11:16,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:11:16,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:11:16,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:11:16,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:11:16,231 INFO L87 Difference]: Start difference. First operand 10333 states and 13704 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:11:16,605 INFO L93 Difference]: Finished difference Result 10333 states and 13704 transitions. [2021-11-03 05:11:16,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:11:16,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 05:11:16,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:11:16,637 INFO L225 Difference]: With dead ends: 10333 [2021-11-03 05:11:16,637 INFO L226 Difference]: Without dead ends: 10331 [2021-11-03 05:11:16,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:11:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10331 states. [2021-11-03 05:11:17,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10331 to 10331. [2021-11-03 05:11:17,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10331 states, 10132 states have (on average 1.3182984603237269) internal successors, (13357), 10156 states have internal predecessors, (13357), 138 states have call successors, (138), 54 states have call predecessors, (138), 54 states have return successors, (207), 126 states have call predecessors, (207), 138 states have call successors, (207) [2021-11-03 05:11:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10331 states to 10331 states and 13702 transitions. [2021-11-03 05:11:17,258 INFO L78 Accepts]: Start accepts. Automaton has 10331 states and 13702 transitions. Word has length 59 [2021-11-03 05:11:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:11:17,258 INFO L470 AbstractCegarLoop]: Abstraction has 10331 states and 13702 transitions. [2021-11-03 05:11:17,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 10331 states and 13702 transitions. [2021-11-03 05:11:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 05:11:17,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:17,262 INFO L513 BasicCegarLoop]: 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] [2021-11-03 05:11:17,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:17,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:17,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:11:17,688 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:11:17,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash -388135544, now seen corresponding path program 1 times [2021-11-03 05:11:17,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:11:17,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920684875] [2021-11-03 05:11:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:17,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:11:17,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:11:17,703 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:11:17,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:11:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:24,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 4072 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:11:24,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:25,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:26,420 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:11:26,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920684875] [2021-11-03 05:11:26,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920684875] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:11:26,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [926377160] [2021-11-03 05:11:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:26,420 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:11:26,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:11:26,421 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:11:26,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 05:11:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:29,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 4072 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:11:29,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:11:30,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:11:31,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [926377160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:11:31,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:11:31,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:11:31,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669259550] [2021-11-03 05:11:31,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:11:31,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:11:31,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:11:31,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:11:31,830 INFO L87 Difference]: Start difference. First operand 10331 states and 13702 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:32,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:11:32,791 INFO L93 Difference]: Finished difference Result 30596 states and 41050 transitions. [2021-11-03 05:11:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:11:32,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 05:11:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:11:32,861 INFO L225 Difference]: With dead ends: 30596 [2021-11-03 05:11:32,861 INFO L226 Difference]: Without dead ends: 20398 [2021-11-03 05:11:32,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:11:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20398 states. [2021-11-03 05:11:33,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20398 to 20113. [2021-11-03 05:11:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20113 states, 19728 states have (on average 1.3207116788321167) internal successors, (26055), 19775 states have internal predecessors, (26055), 270 states have call successors, (270), 108 states have call predecessors, (270), 108 states have return successors, (603), 241 states have call predecessors, (603), 270 states have call successors, (603) [2021-11-03 05:11:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20113 states to 20113 states and 26928 transitions. [2021-11-03 05:11:33,899 INFO L78 Accepts]: Start accepts. Automaton has 20113 states and 26928 transitions. Word has length 60 [2021-11-03 05:11:33,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:11:33,900 INFO L470 AbstractCegarLoop]: Abstraction has 20113 states and 26928 transitions. [2021-11-03 05:11:33,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:33,900 INFO L276 IsEmpty]: Start isEmpty. Operand 20113 states and 26928 transitions. [2021-11-03 05:11:33,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 05:11:33,903 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:33,903 INFO L513 BasicCegarLoop]: 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, 1] [2021-11-03 05:11:33,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:34,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:34,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:11:34,324 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:11:34,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash 852704376, now seen corresponding path program 1 times [2021-11-03 05:11:34,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:11:34,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487908437] [2021-11-03 05:11:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:34,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:11:34,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:11:34,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:11:34,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:11:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:41,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 4073 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:11:41,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:42,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:43,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:11:43,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487908437] [2021-11-03 05:11:43,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487908437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:11:43,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1419844935] [2021-11-03 05:11:43,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:43,135 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:11:43,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:11:43,136 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:11:43,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-03 05:11:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:46,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 4073 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:11:46,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:11:47,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:11:48,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1419844935] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:11:48,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:11:48,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:11:48,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415784039] [2021-11-03 05:11:48,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:11:48,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:11:48,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:11:48,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:11:48,587 INFO L87 Difference]: Start difference. First operand 20113 states and 26928 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:11:49,066 INFO L93 Difference]: Finished difference Result 20113 states and 26928 transitions. [2021-11-03 05:11:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:11:49,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-03 05:11:49,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:11:49,128 INFO L225 Difference]: With dead ends: 20113 [2021-11-03 05:11:49,128 INFO L226 Difference]: Without dead ends: 20102 [2021-11-03 05:11:49,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:11:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20102 states. [2021-11-03 05:11:50,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20102 to 20102. [2021-11-03 05:11:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20102 states, 19718 states have (on average 1.3206207526118268) internal successors, (26040), 19764 states have internal predecessors, (26040), 270 states have call successors, (270), 108 states have call predecessors, (270), 108 states have return successors, (603), 241 states have call predecessors, (603), 270 states have call successors, (603) [2021-11-03 05:11:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20102 states to 20102 states and 26913 transitions. [2021-11-03 05:11:50,346 INFO L78 Accepts]: Start accepts. Automaton has 20102 states and 26913 transitions. Word has length 61 [2021-11-03 05:11:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:11:50,346 INFO L470 AbstractCegarLoop]: Abstraction has 20102 states and 26913 transitions. [2021-11-03 05:11:50,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:11:50,347 INFO L276 IsEmpty]: Start isEmpty. Operand 20102 states and 26913 transitions. [2021-11-03 05:11:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 05:11:50,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:11:50,351 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:11:50,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:50,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:11:50,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:11:50,764 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:11:50,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:11:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash 87472985, now seen corresponding path program 1 times [2021-11-03 05:11:50,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:11:50,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44999891] [2021-11-03 05:11:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:50,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:11:50,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:11:50,772 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:11:50,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:11:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:11:58,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 4190 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:11:58,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:11:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:58,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:11:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:11:59,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:11:59,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44999891] [2021-11-03 05:11:59,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44999891] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:11:59,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [889383217] [2021-11-03 05:11:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:11:59,958 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:11:59,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:11:59,958 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:11:59,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-03 05:12:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:12:03,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 4190 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:12:03,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:12:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:12:03,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:12:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:12:04,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [889383217] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:12:04,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:12:04,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:12:04,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516111849] [2021-11-03 05:12:04,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:12:04,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:12:04,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:12:04,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:12:04,251 INFO L87 Difference]: Start difference. First operand 20102 states and 26913 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:07,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:12:07,677 INFO L93 Difference]: Finished difference Result 58996 states and 79072 transitions. [2021-11-03 05:12:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:12:07,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-03 05:12:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:12:07,784 INFO L225 Difference]: With dead ends: 58996 [2021-11-03 05:12:07,784 INFO L226 Difference]: Without dead ends: 39027 [2021-11-03 05:12:07,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:12:07,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39027 states. [2021-11-03 05:12:09,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39027 to 38984. [2021-11-03 05:12:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38984 states, 38240 states have (on average 1.322123430962343) internal successors, (50558), 38322 states have internal predecessors, (50558), 522 states have call successors, (522), 216 states have call predecessors, (522), 216 states have return successors, (1170), 469 states have call predecessors, (1170), 522 states have call successors, (1170) [2021-11-03 05:12:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38984 states to 38984 states and 52250 transitions. [2021-11-03 05:12:09,751 INFO L78 Accepts]: Start accepts. Automaton has 38984 states and 52250 transitions. Word has length 69 [2021-11-03 05:12:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:12:09,751 INFO L470 AbstractCegarLoop]: Abstraction has 38984 states and 52250 transitions. [2021-11-03 05:12:09,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 38984 states and 52250 transitions. [2021-11-03 05:12:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 05:12:09,779 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:12:09,779 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:12:09,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-03 05:12:10,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:12:10,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:12:10,202 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:12:10,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:12:10,203 INFO L85 PathProgramCache]: Analyzing trace with hash -108063307, now seen corresponding path program 1 times [2021-11-03 05:12:10,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:12:10,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740013805] [2021-11-03 05:12:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:12:10,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:12:10,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:12:10,213 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:12:10,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 05:12:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:12:18,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 4330 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:12:18,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:12:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:12:19,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:12:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:12:20,865 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:12:20,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740013805] [2021-11-03 05:12:20,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740013805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:12:20,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [113319768] [2021-11-03 05:12:20,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:12:20,865 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:12:20,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:12:20,867 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:12:20,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 05:12:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:12:24,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 4330 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:12:24,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:12:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:12:25,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:12:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:12:26,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [113319768] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:12:26,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:12:26,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:12:26,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051912509] [2021-11-03 05:12:26,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:12:26,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:12:26,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:12:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:12:26,007 INFO L87 Difference]: Start difference. First operand 38984 states and 52250 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-03 05:12:29,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:12:29,500 INFO L93 Difference]: Finished difference Result 98805 states and 133565 transitions. [2021-11-03 05:12:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:12:29,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 98 [2021-11-03 05:12:29,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:12:29,768 INFO L225 Difference]: With dead ends: 98805 [2021-11-03 05:12:29,768 INFO L226 Difference]: Without dead ends: 59954 [2021-11-03 05:12:29,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:12:29,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59954 states. [2021-11-03 05:12:32,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59954 to 59870. [2021-11-03 05:12:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59870 states, 58532 states have (on average 1.3399678808173308) internal successors, (78431), 58692 states have internal predecessors, (78431), 900 states have call successors, (900), 432 states have call predecessors, (900), 432 states have return successors, (2016), 793 states have call predecessors, (2016), 900 states have call successors, (2016) [2021-11-03 05:12:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59870 states to 59870 states and 81347 transitions. [2021-11-03 05:12:32,826 INFO L78 Accepts]: Start accepts. Automaton has 59870 states and 81347 transitions. Word has length 98 [2021-11-03 05:12:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:12:32,827 INFO L470 AbstractCegarLoop]: Abstraction has 59870 states and 81347 transitions. [2021-11-03 05:12:32,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-03 05:12:32,827 INFO L276 IsEmpty]: Start isEmpty. Operand 59870 states and 81347 transitions. [2021-11-03 05:12:32,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 05:12:32,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:12:32,845 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:12:32,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:12:33,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:12:33,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:12:33,260 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:12:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:12:33,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1452810849, now seen corresponding path program 1 times [2021-11-03 05:12:33,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:12:33,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382952830] [2021-11-03 05:12:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:12:33,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:12:33,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:12:33,572 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:12:33,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 05:12:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:12:41,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 4282 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:12:41,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:12:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 05:12:42,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:12:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 05:12:44,194 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:12:44,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382952830] [2021-11-03 05:12:44,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382952830] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:12:44,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [587372857] [2021-11-03 05:12:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:12:44,195 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:12:44,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:12:44,196 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:12:44,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 05:12:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:12:47,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 4282 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:12:47,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:12:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:12:48,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:12:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:12:49,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [587372857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:12:49,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:12:49,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-03 05:12:49,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791658755] [2021-11-03 05:12:49,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:12:49,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:12:49,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:12:49,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:12:49,815 INFO L87 Difference]: Start difference. First operand 59870 states and 81347 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:12:54,804 INFO L93 Difference]: Finished difference Result 101666 states and 138175 transitions. [2021-11-03 05:12:54,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:12:54,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-03 05:12:54,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:12:54,953 INFO L225 Difference]: With dead ends: 101666 [2021-11-03 05:12:54,953 INFO L226 Difference]: Without dead ends: 41913 [2021-11-03 05:12:55,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:12:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41913 states. [2021-11-03 05:12:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41913 to 41634. [2021-11-03 05:12:57,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41634 states, 40692 states have (on average 1.3410989875159736) internal successors, (54572), 40806 states have internal predecessors, (54572), 630 states have call successors, (630), 306 states have call predecessors, (630), 306 states have return successors, (1389), 555 states have call predecessors, (1389), 630 states have call successors, (1389) [2021-11-03 05:12:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41634 states to 41634 states and 56591 transitions. [2021-11-03 05:12:57,283 INFO L78 Accepts]: Start accepts. Automaton has 41634 states and 56591 transitions. Word has length 97 [2021-11-03 05:12:57,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:12:57,284 INFO L470 AbstractCegarLoop]: Abstraction has 41634 states and 56591 transitions. [2021-11-03 05:12:57,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand 41634 states and 56591 transitions. [2021-11-03 05:12:57,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 05:12:57,297 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:12:57,297 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:12:57,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 05:12:57,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 05:12:57,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:12:57,720 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:12:57,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:12:57,721 INFO L85 PathProgramCache]: Analyzing trace with hash 803259743, now seen corresponding path program 1 times [2021-11-03 05:12:57,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:12:57,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535062302] [2021-11-03 05:12:57,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:12:57,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:12:57,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:12:57,732 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:12:57,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-03 05:13:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:13:05,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 4377 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:13:05,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:13:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:13:07,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:13:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:13:08,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:13:08,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535062302] [2021-11-03 05:13:08,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535062302] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:13:08,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1914644394] [2021-11-03 05:13:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:13:08,286 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:13:08,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:13:08,287 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:13:08,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-03 05:13:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:13:12,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 4377 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:13:12,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:13:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:13:12,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:13:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:13:13,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1914644394] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:13:13,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:13:13,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:13:13,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580426713] [2021-11-03 05:13:13,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:13:13,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:13:13,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:13:13,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:13:13,773 INFO L87 Difference]: Start difference. First operand 41634 states and 56591 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-11-03 05:13:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:13:22,103 INFO L93 Difference]: Finished difference Result 103497 states and 139673 transitions. [2021-11-03 05:13:22,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:13:22,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 101 [2021-11-03 05:13:22,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:13:22,419 INFO L225 Difference]: With dead ends: 103497 [2021-11-03 05:13:22,419 INFO L226 Difference]: Without dead ends: 61996 [2021-11-03 05:13:22,485 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:13:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61996 states. [2021-11-03 05:13:25,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61996 to 61555. [2021-11-03 05:13:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61555 states, 60037 states have (on average 1.3226843446541299) internal successors, (79410), 60225 states have internal predecessors, (79410), 1008 states have call successors, (1008), 504 states have call predecessors, (1008), 504 states have return successors, (2256), 881 states have call predecessors, (2256), 1008 states have call successors, (2256) [2021-11-03 05:13:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61555 states to 61555 states and 82674 transitions. [2021-11-03 05:13:25,285 INFO L78 Accepts]: Start accepts. Automaton has 61555 states and 82674 transitions. Word has length 101 [2021-11-03 05:13:25,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:13:25,286 INFO L470 AbstractCegarLoop]: Abstraction has 61555 states and 82674 transitions. [2021-11-03 05:13:25,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-11-03 05:13:25,286 INFO L276 IsEmpty]: Start isEmpty. Operand 61555 states and 82674 transitions. [2021-11-03 05:13:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 05:13:25,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:13:25,298 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:13:25,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2021-11-03 05:13:25,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-03 05:13:25,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:13:25,720 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:13:25,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:13:25,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1212067769, now seen corresponding path program 1 times [2021-11-03 05:13:25,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:13:25,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402402805] [2021-11-03 05:13:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:13:25,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:13:25,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:13:25,727 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:13:25,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 05:13:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:13:34,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 4367 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:13:34,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:13:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 05:13:35,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:13:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 05:13:36,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:13:36,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402402805] [2021-11-03 05:13:36,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402402805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:13:36,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [356690932] [2021-11-03 05:13:36,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:13:36,394 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:13:36,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:13:36,395 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:13:36,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-03 05:13:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:13:40,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 4367 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:13:40,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:13:41,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:13:41,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:13:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:13:42,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [356690932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:13:42,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:13:42,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 11 [2021-11-03 05:13:42,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692181054] [2021-11-03 05:13:42,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:13:42,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:13:42,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:13:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:13:42,298 INFO L87 Difference]: Start difference. First operand 61555 states and 82674 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:13:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:13:48,099 INFO L93 Difference]: Finished difference Result 122854 states and 165042 transitions. [2021-11-03 05:13:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:13:48,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-03 05:13:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:13:48,267 INFO L225 Difference]: With dead ends: 122854 [2021-11-03 05:13:48,268 INFO L226 Difference]: Without dead ends: 61471 [2021-11-03 05:13:48,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:13:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61471 states. [2021-11-03 05:13:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61471 to 61352. [2021-11-03 05:13:51,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61352 states, 59834 states have (on average 1.3231941705384898) internal successors, (79172), 60022 states have internal predecessors, (79172), 1008 states have call successors, (1008), 504 states have call predecessors, (1008), 504 states have return successors, (2256), 881 states have call predecessors, (2256), 1008 states have call successors, (2256) [2021-11-03 05:13:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61352 states to 61352 states and 82436 transitions. [2021-11-03 05:13:51,343 INFO L78 Accepts]: Start accepts. Automaton has 61352 states and 82436 transitions. Word has length 101 [2021-11-03 05:13:51,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:13:51,344 INFO L470 AbstractCegarLoop]: Abstraction has 61352 states and 82436 transitions. [2021-11-03 05:13:51,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:13:51,344 INFO L276 IsEmpty]: Start isEmpty. Operand 61352 states and 82436 transitions. [2021-11-03 05:13:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 05:13:51,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:13:51,357 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:13:51,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-03 05:13:51,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-03 05:13:51,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:13:51,764 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 05:13:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:13:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash -696173798, now seen corresponding path program 1 times [2021-11-03 05:13:51,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:13:51,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811540331] [2021-11-03 05:13:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:13:51,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:13:51,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:13:51,771 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:13:51,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-03 05:13:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:14:00,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 4403 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:14:00,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:14:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 05:14:01,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:14:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 05:14:02,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:14:02,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811540331] [2021-11-03 05:14:02,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811540331] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:14:02,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1710216302] [2021-11-03 05:14:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:14:02,361 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:14:02,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:14:02,361 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:14:02,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8056e3-c467-4575-874d-75061984dbd8/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-03 05:14:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:14:06,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 4403 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:14:06,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:14:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:14:07,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:14:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:14:08,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1710216302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:14:08,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:14:08,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 05:14:08,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115201747] [2021-11-03 05:14:08,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:14:08,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:14:08,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:14:08,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:14:08,004 INFO L87 Difference]: Start difference. First operand 61352 states and 82436 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:14:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:14:16,856 INFO L93 Difference]: Finished difference Result 179582 states and 241623 transitions. [2021-11-03 05:14:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:14:16,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 05:14:16,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:14:17,299 INFO L225 Difference]: With dead ends: 179582 [2021-11-03 05:14:17,300 INFO L226 Difference]: Without dead ends: 118410 [2021-11-03 05:14:17,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:14:17,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118410 states.