./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8 --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 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:28:51,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:28:51,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:28:51,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:28:51,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:28:51,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:28:51,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:28:51,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:28:51,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:28:51,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:28:51,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:28:51,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:28:51,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:28:51,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:28:51,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:28:51,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:28:51,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:28:51,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:28:51,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:28:51,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:28:51,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:28:51,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:28:51,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:28:51,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:28:51,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:28:51,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:28:51,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:28:51,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:28:51,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:28:51,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:28:51,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:28:51,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:28:51,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:28:51,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:28:51,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:28:51,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:28:51,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:28:51,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:28:51,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:28:51,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:28:51,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:28:51,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:28:51,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:28:51,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:28:51,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:28:51,635 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:28:51,636 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:28:51,636 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:28:51,636 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:28:51,637 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:28:51,637 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:28:51,637 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:28:51,637 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:28:51,638 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:28:51,638 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:28:51,638 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:28:51,643 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:28:51,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:28:51,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:28:51,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:28:51,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:28:51,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:28:51,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:28:51,645 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:28:51,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:28:51,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:28:51,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:28:51,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:28:51,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:28:51,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:28:51,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:28:51,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:28:51,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:28:51,648 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:28:51,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:28:51,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:28:51,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:28:51,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:28:51,650 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_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 [2021-11-07 01:28:51,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:28:52,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:28:52,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:28:52,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:28:52,030 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:28:52,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-07 01:28:52,119 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/data/bada8e120/0071720a615e40339b69d8052c9e318c/FLAGfc493653a [2021-11-07 01:28:53,143 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:28:53,145 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-07 01:28:53,212 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/data/bada8e120/0071720a615e40339b69d8052c9e318c/FLAGfc493653a [2021-11-07 01:28:53,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/data/bada8e120/0071720a615e40339b69d8052c9e318c [2021-11-07 01:28:53,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:28:53,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:28:53,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:28:53,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:28:53,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:28:53,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:53" (1/1) ... [2021-11-07 01:28:53,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7d12dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:53, skipping insertion in model container [2021-11-07 01:28:53,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:53" (1/1) ... [2021-11-07 01:28:53,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:28:53,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:28:55,417 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,443 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,472 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,520 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,558 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,677 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,733 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,815 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,817 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,839 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,866 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,871 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,901 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,958 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,958 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,970 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,994 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,995 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,996 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:55,996 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,010 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,010 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,011 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,014 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,014 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,017 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,025 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,026 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,026 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,028 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,029 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,030 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,384 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,384 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,385 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,386 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,386 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,387 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:28:56,393 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_452f3357-1986-48b1-aae3-f046c8a54535/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2021-11-07 01:28:56,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:28:56,623 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) [2021-11-07 01:28:56,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b874b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:56, skipping insertion in model container [2021-11-07 01:28:56,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:28:56,625 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:28:56,627 INFO L168 Benchmark]: Toolchain (without parser) took 3150.20 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 72.1 MB in the beginning and 79.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:28:56,628 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory is still 63.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:28:56,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3147.73 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 72.1 MB in the beginning and 79.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:28:56,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory is still 63.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3147.73 ms. Allocated memory was 107.0 MB in the beginning and 163.6 MB in the end (delta: 56.6 MB). Free memory was 72.1 MB in the beginning and 79.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6674]: 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_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8 --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 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:28:59,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:28:59,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:28:59,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:28:59,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:28:59,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:28:59,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:28:59,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:28:59,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:28:59,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:28:59,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:28:59,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:28:59,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:28:59,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:28:59,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:28:59,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:28:59,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:28:59,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:28:59,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:28:59,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:28:59,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:28:59,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:28:59,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:28:59,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:28:59,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:28:59,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:28:59,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:28:59,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:28:59,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:28:59,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:28:59,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:28:59,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:28:59,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:28:59,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:28:59,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:28:59,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:28:59,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:28:59,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:28:59,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:28:59,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:28:59,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:28:59,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:28:59,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:28:59,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:28:59,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:28:59,302 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:28:59,302 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:28:59,302 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:28:59,303 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:28:59,303 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:28:59,303 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:28:59,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:28:59,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:28:59,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:28:59,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:28:59,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:28:59,308 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:28:59,308 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:28:59,308 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:28:59,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:28:59,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:28:59,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:28:59,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:28:59,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:28:59,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:28:59,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:28:59,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:28:59,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:28:59,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:28:59,311 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:28:59,311 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:59,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:28:59,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:28:59,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:28:59,312 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_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 [2021-11-07 01:28:59,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:28:59,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:28:59,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:28:59,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:28:59,775 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:28:59,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-07 01:28:59,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/data/ba851847c/ae4f73b61efe491cb3fff01604810a2f/FLAGe440907aa [2021-11-07 01:29:01,045 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:01,046 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-07 01:29:01,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/data/ba851847c/ae4f73b61efe491cb3fff01604810a2f/FLAGe440907aa [2021-11-07 01:29:01,372 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/data/ba851847c/ae4f73b61efe491cb3fff01604810a2f [2021-11-07 01:29:01,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:01,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:01,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:01,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:01,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:01,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:01" (1/1) ... [2021-11-07 01:29:01,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e85712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:01, skipping insertion in model container [2021-11-07 01:29:01,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:01" (1/1) ... [2021-11-07 01:29:01,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:01,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:04,893 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_452f3357-1986-48b1-aae3-f046c8a54535/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2021-11-07 01:29:04,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:05,159 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:29:05,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:05,815 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_452f3357-1986-48b1-aae3-f046c8a54535/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2021-11-07 01:29:05,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:05,921 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:29:06,643 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_452f3357-1986-48b1-aae3-f046c8a54535/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2021-11-07 01:29:06,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:07,007 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:29:07,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07 WrapperNode [2021-11-07 01:29:07,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:07,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:07,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:29:07,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:29:07,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07" (1/1) ... [2021-11-07 01:29:07,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07" (1/1) ... [2021-11-07 01:29:08,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:08,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:29:08,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:29:08,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:29:08,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07" (1/1) ... [2021-11-07 01:29:08,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07" (1/1) ... [2021-11-07 01:29:08,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07" (1/1) ... [2021-11-07 01:29:08,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07" (1/1) ... [2021-11-07 01:29:08,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07" (1/1) ... [2021-11-07 01:29:09,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07" (1/1) ... [2021-11-07 01:29:09,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07" (1/1) ... [2021-11-07 01:29:09,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:29:09,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:29:09,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:29:09,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:29:09,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07" (1/1) ... [2021-11-07 01:29:09,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:09,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:09,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:29:09,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:29:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:29:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:29:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:29:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:29:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:29:09,628 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:29:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:29:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:29:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:29:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:29:09,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:29:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:29:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:29:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:29:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:29:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:29:09,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:29:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:29:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:29:09,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:29:09,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:34:20,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:34:20,318 INFO L299 CfgBuilder]: Removed 5499 assume(true) statements. [2021-11-07 01:34:20,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:20 BoogieIcfgContainer [2021-11-07 01:34:20,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:34:20,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:34:20,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:34:20,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:34:20,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:29:01" (1/3) ... [2021-11-07 01:34:20,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62fefc70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:20, skipping insertion in model container [2021-11-07 01:34:20,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:07" (2/3) ... [2021-11-07 01:34:20,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62fefc70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:34:20, skipping insertion in model container [2021-11-07 01:34:20,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:34:20" (3/3) ... [2021-11-07 01:34:20,334 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2021-11-07 01:34:20,339 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:34:20,339 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2021-11-07 01:34:20,417 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:34:20,423 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 [2021-11-07 01:34:20,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2021-11-07 01:34:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 5564 states, 5488 states have (on average 1.5369897959183674) internal successors, (8435), 5563 states have internal predecessors, (8435), 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) [2021-11-07 01:34:20,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:34:20,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:20,529 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:20,530 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-07 01:34:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2137541953, now seen corresponding path program 1 times [2021-11-07 01:34:20,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:20,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659861995] [2021-11-07 01:34:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:20,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:20,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:20,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:20,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:34:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:31,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 4713 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:34:31,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:32,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:32,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:32,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:32,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659861995] [2021-11-07 01:34:32,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659861995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:32,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:32,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:34:32,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879655038] [2021-11-07 01:34:32,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:34:32,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:34:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:34:32,516 INFO L87 Difference]: Start difference. First operand has 5564 states, 5488 states have (on average 1.5369897959183674) internal successors, (8435), 5563 states have internal predecessors, (8435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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) [2021-11-07 01:34:32,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:32,743 INFO L93 Difference]: Finished difference Result 11124 states and 16865 transitions. [2021-11-07 01:34:32,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:34:32,745 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2021-11-07 01:34:32,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:32,804 INFO L225 Difference]: With dead ends: 11124 [2021-11-07 01:34:32,804 INFO L226 Difference]: Without dead ends: 5519 [2021-11-07 01:34:32,822 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:34:32,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2021-11-07 01:34:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5519. [2021-11-07 01:34:33,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5519 states, 5444 states have (on average 1.5165319617927995) internal successors, (8256), 5518 states have internal predecessors, (8256), 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) [2021-11-07 01:34:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 8256 transitions. [2021-11-07 01:34:33,114 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 8256 transitions. Word has length 55 [2021-11-07 01:34:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:33,115 INFO L470 AbstractCegarLoop]: Abstraction has 5519 states and 8256 transitions. [2021-11-07 01:34:33,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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) [2021-11-07 01:34:33,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 8256 transitions. [2021-11-07 01:34:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:34:33,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:33,119 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:34:33,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:33,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:33,334 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-07 01:34:33,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:33,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1819365493, now seen corresponding path program 1 times [2021-11-07 01:34:33,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:33,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650115957] [2021-11-07 01:34:33,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:33,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:33,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:33,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:33,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:34:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:44,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 4713 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:34:44,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:45,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:34:45,511 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:45,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650115957] [2021-11-07 01:34:45,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650115957] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:34:45,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:34:45,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:34:45,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350095853] [2021-11-07 01:34:45,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:34:45,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:34:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:34:45,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:45,517 INFO L87 Difference]: Start difference. First operand 5519 states and 8256 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) [2021-11-07 01:34:46,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:34:46,187 INFO L93 Difference]: Finished difference Result 11026 states and 16511 transitions. [2021-11-07 01:34:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:34:46,188 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 55 [2021-11-07 01:34:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:34:46,228 INFO L225 Difference]: With dead ends: 11026 [2021-11-07 01:34:46,228 INFO L226 Difference]: Without dead ends: 5531 [2021-11-07 01:34:46,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:34:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2021-11-07 01:34:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5531. [2021-11-07 01:34:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5531 states, 5456 states have (on average 1.5153958944281525) internal successors, (8268), 5530 states have internal predecessors, (8268), 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) [2021-11-07 01:34:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 8268 transitions. [2021-11-07 01:34:46,415 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 8268 transitions. Word has length 55 [2021-11-07 01:34:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:34:46,416 INFO L470 AbstractCegarLoop]: Abstraction has 5531 states and 8268 transitions. [2021-11-07 01:34:46,416 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) [2021-11-07 01:34:46,417 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 8268 transitions. [2021-11-07 01:34:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:34:46,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:34:46,422 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] [2021-11-07 01:34:46,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:34:46,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:34:46,623 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-07 01:34:46,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:34:46,623 INFO L85 PathProgramCache]: Analyzing trace with hash 469727509, now seen corresponding path program 1 times [2021-11-07 01:34:46,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:34:46,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638546445] [2021-11-07 01:34:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:46,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:34:46,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:34:46,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:34:46,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:34:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:34:58,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 4763 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:34:58,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:34:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:34:58,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:34:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:34:59,415 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:34:59,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638546445] [2021-11-07 01:34:59,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638546445] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:34:59,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1949092415] [2021-11-07 01:34:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:34:59,416 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:34:59,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:34:59,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:34:59,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:35:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:03,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 4763 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:03,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:35:03,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:35:03,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1949092415] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:03,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:35:03,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:35:03,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176282589] [2021-11-07 01:35:03,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:03,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:03,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:03,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:03,905 INFO L87 Difference]: Start difference. First operand 5531 states and 8268 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:05,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:05,058 INFO L93 Difference]: Finished difference Result 15865 states and 23806 transitions. [2021-11-07 01:35:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:05,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 01:35:05,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:05,124 INFO L225 Difference]: With dead ends: 15865 [2021-11-07 01:35:05,124 INFO L226 Difference]: Without dead ends: 10387 [2021-11-07 01:35:05,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:05,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10387 states. [2021-11-07 01:35:05,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10387 to 10258. [2021-11-07 01:35:05,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10258 states, 10183 states have (on average 1.5250908376706276) internal successors, (15530), 10257 states have internal predecessors, (15530), 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) [2021-11-07 01:35:05,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10258 states to 10258 states and 15530 transitions. [2021-11-07 01:35:05,472 INFO L78 Accepts]: Start accepts. Automaton has 10258 states and 15530 transitions. Word has length 65 [2021-11-07 01:35:05,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:05,475 INFO L470 AbstractCegarLoop]: Abstraction has 10258 states and 15530 transitions. [2021-11-07 01:35:05,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:35:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 10258 states and 15530 transitions. [2021-11-07 01:35:05,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:35:05,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:05,479 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] [2021-11-07 01:35:05,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:05,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:35:05,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:05,895 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-07 01:35:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:05,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1705551390, now seen corresponding path program 1 times [2021-11-07 01:35:05,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:05,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359514302] [2021-11-07 01:35:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:05,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:05,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:05,912 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:05,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:35:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:17,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 4751 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:17,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:35:17,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:35:18,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:18,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359514302] [2021-11-07 01:35:18,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359514302] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:18,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1638959716] [2021-11-07 01:35:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:18,692 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:18,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:18,696 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:18,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:35:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:22,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 4751 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:22,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:35:22,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:35:22,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1638959716] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:22,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:35:22,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:35:22,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493755542] [2021-11-07 01:35:22,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:22,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:22,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:22,942 INFO L87 Difference]: Start difference. First operand 10258 states and 15530 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-07 01:35:26,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:26,287 INFO L93 Difference]: Finished difference Result 27474 states and 41730 transitions. [2021-11-07 01:35:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:26,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 66 [2021-11-07 01:35:26,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:26,371 INFO L225 Difference]: With dead ends: 27474 [2021-11-07 01:35:26,371 INFO L226 Difference]: Without dead ends: 17269 [2021-11-07 01:35:26,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:26,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17269 states. [2021-11-07 01:35:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17269 to 17159. [2021-11-07 01:35:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17159 states, 17084 states have (on average 1.5336572231327559) internal successors, (26201), 17158 states have internal predecessors, (26201), 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) [2021-11-07 01:35:26,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17159 states to 17159 states and 26201 transitions. [2021-11-07 01:35:26,872 INFO L78 Accepts]: Start accepts. Automaton has 17159 states and 26201 transitions. Word has length 66 [2021-11-07 01:35:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:26,874 INFO L470 AbstractCegarLoop]: Abstraction has 17159 states and 26201 transitions. [2021-11-07 01:35:26,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-07 01:35:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 17159 states and 26201 transitions. [2021-11-07 01:35:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:35:26,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:26,877 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] [2021-11-07 01:35:26,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:27,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:27,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:27,303 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-07 01:35:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:27,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1147851020, now seen corresponding path program 1 times [2021-11-07 01:35:27,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:27,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593062647] [2021-11-07 01:35:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:27,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:27,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:27,316 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:27,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:35:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:38,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 4765 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:35:38,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:35:39,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:35:40,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:40,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593062647] [2021-11-07 01:35:40,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593062647] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:35:40,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1385123666] [2021-11-07 01:35:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:40,169 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:40,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:35:40,171 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:35:40,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:35:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:43,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 4765 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:43,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:35:44,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:35:45,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1385123666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:45,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:35:45,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:35:45,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497212484] [2021-11-07 01:35:45,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:35:45,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:45,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:35:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:45,569 INFO L87 Difference]: Start difference. First operand 17159 states and 26201 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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) [2021-11-07 01:35:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:48,507 INFO L93 Difference]: Finished difference Result 17289 states and 26385 transitions. [2021-11-07 01:35:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:35:48,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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 68 [2021-11-07 01:35:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:48,554 INFO L225 Difference]: With dead ends: 17289 [2021-11-07 01:35:48,554 INFO L226 Difference]: Without dead ends: 17219 [2021-11-07 01:35:48,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17219 states. [2021-11-07 01:35:48,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17219 to 17089. [2021-11-07 01:35:48,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17089 states, 17049 states have (on average 1.528770015836706) internal successors, (26064), 17088 states have internal predecessors, (26064), 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) [2021-11-07 01:35:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17089 states to 17089 states and 26064 transitions. [2021-11-07 01:35:49,021 INFO L78 Accepts]: Start accepts. Automaton has 17089 states and 26064 transitions. Word has length 68 [2021-11-07 01:35:49,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:49,022 INFO L470 AbstractCegarLoop]: Abstraction has 17089 states and 26064 transitions. [2021-11-07 01:35:49,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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) [2021-11-07 01:35:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 17089 states and 26064 transitions. [2021-11-07 01:35:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:35:49,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:49,025 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] [2021-11-07 01:35:49,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:49,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-07 01:35:49,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:49,447 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-07 01:35:49,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1476934863, now seen corresponding path program 1 times [2021-11-07 01:35:49,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:49,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079099018] [2021-11-07 01:35:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:49,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:49,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:49,458 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:49,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:36:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:01,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 4887 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:36:01,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:36:01,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:36:02,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:02,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079099018] [2021-11-07 01:36:02,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079099018] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:36:02,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [293225908] [2021-11-07 01:36:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:02,674 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:02,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:36:02,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:36:02,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:36:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:06,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 4887 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:36:06,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:36:06,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:36:07,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [293225908] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:07,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:36:07,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:36:07,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138286175] [2021-11-07 01:36:07,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:36:07,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:36:07,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:36:07,351 INFO L87 Difference]: Start difference. First operand 17089 states and 26064 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-11-07 01:36:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:15,697 INFO L93 Difference]: Finished difference Result 66769 states and 101664 transitions. [2021-11-07 01:36:15,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:36:15,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 77 [2021-11-07 01:36:15,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:15,811 INFO L225 Difference]: With dead ends: 66769 [2021-11-07 01:36:15,811 INFO L226 Difference]: Without dead ends: 49733 [2021-11-07 01:36:15,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:36:15,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49733 states. [2021-11-07 01:36:17,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49733 to 49577. [2021-11-07 01:36:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49577 states, 49537 states have (on average 1.521287118719341) internal successors, (75360), 49576 states have internal predecessors, (75360), 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) [2021-11-07 01:36:17,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49577 states to 49577 states and 75360 transitions. [2021-11-07 01:36:17,168 INFO L78 Accepts]: Start accepts. Automaton has 49577 states and 75360 transitions. Word has length 77 [2021-11-07 01:36:17,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:17,170 INFO L470 AbstractCegarLoop]: Abstraction has 49577 states and 75360 transitions. [2021-11-07 01:36:17,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-11-07 01:36:17,170 INFO L276 IsEmpty]: Start isEmpty. Operand 49577 states and 75360 transitions. [2021-11-07 01:36:17,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:36:17,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:17,173 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] [2021-11-07 01:36:17,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:17,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:17,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:17,596 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-07 01:36:17,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash -386609874, now seen corresponding path program 1 times [2021-11-07 01:36:17,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:17,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20626053] [2021-11-07 01:36:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:17,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:17,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:17,607 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:17,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:36:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:29,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 4889 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:36:29,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:36:30,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:36:31,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:31,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20626053] [2021-11-07 01:36:31,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20626053] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:36:31,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [687466585] [2021-11-07 01:36:31,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:31,118 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:31,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:36:31,119 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:36:31,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:36:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:35,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 4889 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:36:35,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:36:35,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:36:35,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [687466585] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:35,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:36:35,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:36:35,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147776494] [2021-11-07 01:36:35,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:36:35,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:35,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:36:35,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:36:35,993 INFO L87 Difference]: Start difference. First operand 49577 states and 75360 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:48,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:48,607 INFO L93 Difference]: Finished difference Result 194777 states and 295836 transitions. [2021-11-07 01:36:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:36:48,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 01:36:48,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:49,090 INFO L225 Difference]: With dead ends: 194777 [2021-11-07 01:36:49,090 INFO L226 Difference]: Without dead ends: 145253 [2021-11-07 01:36:49,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:36:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145253 states. [2021-11-07 01:36:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145253 to 145097. [2021-11-07 01:36:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145097 states, 145057 states have (on average 1.5164521532914648) internal successors, (219972), 145096 states have internal predecessors, (219972), 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) [2021-11-07 01:36:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145097 states to 145097 states and 219972 transitions. [2021-11-07 01:36:53,681 INFO L78 Accepts]: Start accepts. Automaton has 145097 states and 219972 transitions. Word has length 78 [2021-11-07 01:36:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:53,682 INFO L470 AbstractCegarLoop]: Abstraction has 145097 states and 219972 transitions. [2021-11-07 01:36:53,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand 145097 states and 219972 transitions. [2021-11-07 01:36:53,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:36:53,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:53,684 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] [2021-11-07 01:36:53,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:53,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:54,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:54,091 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 72 more)] === [2021-11-07 01:36:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash -946272942, now seen corresponding path program 1 times [2021-11-07 01:36:54,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:54,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024986100] [2021-11-07 01:36:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:54,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:54,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:54,103 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:54,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:37:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:06,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 4891 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:37:06,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:37:07,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:37:07,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:07,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024986100] [2021-11-07 01:37:07,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024986100] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:07,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [389690928] [2021-11-07 01:37:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:07,783 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:07,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:37:07,783 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:37:07,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_452f3357-1986-48b1-aae3-f046c8a54535/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:37:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:12,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 4891 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:37:12,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:37:12,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:37:12,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [389690928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:12,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:37:12,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:37:12,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229734510] [2021-11-07 01:37:12,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:12,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:37:12,881 INFO L87 Difference]: Start difference. First operand 145097 states and 219972 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:30,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:30,880 INFO L93 Difference]: Finished difference Result 571537 states and 866284 transitions. [2021-11-07 01:37:30,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:30,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 01:37:30,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:32,203 INFO L225 Difference]: With dead ends: 571537 [2021-11-07 01:37:32,203 INFO L226 Difference]: Without dead ends: 426493 [2021-11-07 01:37:32,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:37:32,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426493 states.