./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-32_7a-drivers--hid--hid-roccat-pyra.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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/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 2d48abbc06c71aeec5c2fd7c4bfe3a64e4c3a331115f87234999cdb923340216 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:02:31,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:02:31,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:02:31,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:02:31,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:02:31,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:02:31,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:02:31,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:02:31,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:02:31,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:02:31,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:02:31,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:02:31,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:02:31,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:02:31,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:02:31,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:02:31,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:02:31,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:02:31,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:02:31,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:02:31,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:02:31,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:02:31,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:02:31,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:02:31,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:02:31,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:02:31,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:02:31,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:02:31,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:02:31,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:02:31,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:02:31,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:02:31,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:02:31,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:02:31,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:02:31,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:02:31,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:02:31,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:02:31,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:02:31,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:02:31,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:02:31,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:02:31,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:02:31,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:02:31,616 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:02:31,617 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:02:31,617 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:02:31,618 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:02:31,618 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:02:31,618 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:02:31,618 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:02:31,619 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:02:31,620 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:02:31,620 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:02:31,621 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:02:31,621 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:02:31,621 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:02:31,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:02:31,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:02:31,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:02:31,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:02:31,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:02:31,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:02:31,624 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:02:31,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:02:31,624 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:02:31,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:02:31,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:02:31,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:02:31,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:02:31,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:02:31,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:02:31,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:02:31,627 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:02:31,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:02:31,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:02:31,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:02:31,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:02:31,628 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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d48abbc06c71aeec5c2fd7c4bfe3a64e4c3a331115f87234999cdb923340216 [2021-11-07 02:02:31,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:02:32,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:02:32,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:02:32,057 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:02:32,058 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:02:32,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2021-11-07 02:02:32,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/data/9d95b8b63/2da5ff02e79c4ce5ba894dc9842d68d5/FLAGa48cc64e4 [2021-11-07 02:02:33,147 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:02:33,149 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2021-11-07 02:02:33,202 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/data/9d95b8b63/2da5ff02e79c4ce5ba894dc9842d68d5/FLAGa48cc64e4 [2021-11-07 02:02:33,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/data/9d95b8b63/2da5ff02e79c4ce5ba894dc9842d68d5 [2021-11-07 02:02:33,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:02:33,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:02:33,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:02:33,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:02:33,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:02:33,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:02:33" (1/1) ... [2021-11-07 02:02:33,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82bc3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:33, skipping insertion in model container [2021-11-07 02:02:33,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:02:33" (1/1) ... [2021-11-07 02:02:33,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:02:33,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:02:34,839 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 02:02:34,840 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 02:02:34,850 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 02:02:34,850 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 02:02:34,898 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 02:02:34,906 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 02:02:34,922 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 02:02:34,922 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 02:02:34,924 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 02:02:34,936 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 02:02:34,937 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 02:02:34,944 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 02:02:34,945 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 02:02:34,953 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 02:02:34,954 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 02:02:34,973 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 02:02:34,992 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 02:02:35,017 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 02:02:35,023 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 02:02:35,030 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 02:02:35,152 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 02:02:35,159 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 02:02:35,160 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 02:02:35,161 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 02:02:35,162 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 02:02:35,164 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:02:35,166 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 02:02:35,168 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 02:02:35,168 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 02:02:35,180 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 02:02:35,188 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 02:02:35,189 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 02:02:35,190 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 02:02:35,192 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 02:02:35,193 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 02:02:35,193 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 02:02:35,194 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 02:02:35,195 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 02:02:35,199 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 02:02:35,199 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 02:02:35,200 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 02:02:35,205 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 02:02:35,208 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 02:02:35,209 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 02:02:35,210 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 02:02:35,211 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 02:02:35,211 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 02:02:35,212 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 02:02:35,213 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 02:02:35,214 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 02:02:35,214 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 02:02:35,215 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 02:02:35,215 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 02:02:35,216 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 02:02:35,216 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 02:02:35,218 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 02:02:35,221 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 02:02:35,223 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 02:02:35,223 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 02:02:35,227 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 02:02:35,227 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 02:02:35,362 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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i[184130,184143] [2021-11-07 02:02:35,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:02:35,649 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 02:02:35,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f33c913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:35, skipping insertion in model container [2021-11-07 02:02:35,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:02:35,650 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:02:35,654 INFO L168 Benchmark]: Toolchain (without parser) took 2047.83 ms. Allocated memory is still 121.6 MB. Free memory was 78.0 MB in the beginning and 79.7 MB in the end (delta: -1.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-11-07 02:02:35,655 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 121.6 MB. Free memory is still 103.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:02:35,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2044.62 ms. Allocated memory is still 121.6 MB. Free memory was 77.9 MB in the beginning and 79.7 MB in the end (delta: -1.8 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-11-07 02:02:35,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 121.6 MB. Free memory is still 103.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2044.62 ms. Allocated memory is still 121.6 MB. Free memory was 77.9 MB in the beginning and 79.7 MB in the end (delta: -1.8 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4216]: 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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/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 2d48abbc06c71aeec5c2fd7c4bfe3a64e4c3a331115f87234999cdb923340216 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:02:38,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:02:38,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:02:38,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:02:38,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:02:38,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:02:38,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:02:38,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:02:38,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:02:38,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:02:38,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:02:38,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:02:38,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:02:38,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:02:38,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:02:38,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:02:38,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:02:38,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:02:38,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:02:38,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:02:38,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:02:38,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:02:38,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:02:38,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:02:38,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:02:38,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:02:38,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:02:38,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:02:38,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:02:38,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:02:38,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:02:38,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:02:38,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:02:38,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:02:38,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:02:38,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:02:38,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:02:38,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:02:38,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:02:38,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:02:38,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:02:38,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:02:38,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:02:38,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:02:38,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:02:38,647 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:02:38,647 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:02:38,648 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:02:38,648 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:02:38,648 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:02:38,648 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:02:38,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:02:38,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:02:38,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:02:38,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:02:38,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:02:38,653 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:02:38,653 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:02:38,653 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:02:38,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:02:38,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:02:38,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:02:38,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:02:38,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:02:38,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:02:38,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:02:38,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:02:38,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:02:38,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:02:38,656 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:02:38,657 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:38,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:02:38,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:02:38,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:02:38,658 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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d48abbc06c71aeec5c2fd7c4bfe3a64e4c3a331115f87234999cdb923340216 [2021-11-07 02:02:39,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:02:39,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:02:39,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:02:39,138 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:02:39,139 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:02:39,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2021-11-07 02:02:39,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/data/13a8de09f/d9958d18a3d34be8a67f4d822e89a568/FLAGa506507f1 [2021-11-07 02:02:40,407 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:02:40,409 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2021-11-07 02:02:40,458 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/data/13a8de09f/d9958d18a3d34be8a67f4d822e89a568/FLAGa506507f1 [2021-11-07 02:02:40,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/data/13a8de09f/d9958d18a3d34be8a67f4d822e89a568 [2021-11-07 02:02:40,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:02:40,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:02:40,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:02:40,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:02:40,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:02:40,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:02:40" (1/1) ... [2021-11-07 02:02:40,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e6031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:40, skipping insertion in model container [2021-11-07 02:02:40,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:02:40" (1/1) ... [2021-11-07 02:02:40,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:02:41,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:02:42,695 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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i[184130,184143] [2021-11-07 02:02:42,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:02:42,946 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:02:43,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:02:43,390 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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i[184130,184143] [2021-11-07 02:02:43,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:02:43,477 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:02:43,803 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_17bf7d0c-d00a-402e-932e-64ce0b3896ce/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i[184130,184143] [2021-11-07 02:02:43,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:02:44,037 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:02:44,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44 WrapperNode [2021-11-07 02:02:44,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:02:44,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:02:44,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:02:44,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:02:44,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44" (1/1) ... [2021-11-07 02:02:44,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44" (1/1) ... [2021-11-07 02:02:44,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:02:44,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:02:44,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:02:44,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:02:44,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44" (1/1) ... [2021-11-07 02:02:44,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44" (1/1) ... [2021-11-07 02:02:44,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44" (1/1) ... [2021-11-07 02:02:44,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44" (1/1) ... [2021-11-07 02:02:44,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44" (1/1) ... [2021-11-07 02:02:45,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44" (1/1) ... [2021-11-07 02:02:45,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44" (1/1) ... [2021-11-07 02:02:45,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:02:45,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:02:45,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:02:45,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:02:45,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44" (1/1) ... [2021-11-07 02:02:45,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:02:45,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:02:45,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:02:45,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:02:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:02:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:02:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:02:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure hid_hw_stop [2021-11-07 02:02:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_hw_stop [2021-11-07 02:02:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:02:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:02:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:02:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:02:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:02:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:02:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:02:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:02:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:02:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:02:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:02:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:02:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:02:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:02:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure pyra_remove [2021-11-07 02:02:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure pyra_remove [2021-11-07 02:02:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:02:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:03:04,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:03:04,528 INFO L299 CfgBuilder]: Removed 1701 assume(true) statements. [2021-11-07 02:03:04,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:03:04 BoogieIcfgContainer [2021-11-07 02:03:04,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:03:04,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:03:04,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:03:04,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:03:04,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:02:40" (1/3) ... [2021-11-07 02:03:04,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f97e2c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:03:04, skipping insertion in model container [2021-11-07 02:03:04,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:02:44" (2/3) ... [2021-11-07 02:03:04,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f97e2c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:03:04, skipping insertion in model container [2021-11-07 02:03:04,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:03:04" (3/3) ... [2021-11-07 02:03:04,545 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hid--hid-roccat-pyra.ko-entry_point.cil.out.i [2021-11-07 02:03:04,552 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:03:04,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2021-11-07 02:03:04,625 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:03:04,632 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 02:03:04,632 INFO L340 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2021-11-07 02:03:04,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 1449 states, 1390 states have (on average 1.4014388489208633) internal successors, (1948), 1440 states have internal predecessors, (1948), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 02:03:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-11-07 02:03:04,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:04,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:04,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:03:04,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:04,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1390351567, now seen corresponding path program 1 times [2021-11-07 02:03:04,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:04,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182433101] [2021-11-07 02:03:04,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:04,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:04,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:04,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:04,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:03:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:09,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 3775 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:03:09,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:11,581 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 02:03:11,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:13,103 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 02:03:13,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:13,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182433101] [2021-11-07 02:03:13,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182433101] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:13,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:03:13,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:03:13,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668293259] [2021-11-07 02:03:13,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:03:13,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:13,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:03:13,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:03:13,140 INFO L87 Difference]: Start difference. First operand has 1449 states, 1390 states have (on average 1.4014388489208633) internal successors, (1948), 1440 states have internal predecessors, (1948), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 190.0) internal successors, (380), 2 states have internal predecessors, (380), 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 02:03:13,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:13,275 INFO L93 Difference]: Finished difference Result 2876 states and 3891 transitions. [2021-11-07 02:03:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:03:13,277 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 190.0) internal successors, (380), 2 states have internal predecessors, (380), 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 380 [2021-11-07 02:03:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:13,310 INFO L225 Difference]: With dead ends: 2876 [2021-11-07 02:03:13,311 INFO L226 Difference]: Without dead ends: 1396 [2021-11-07 02:03:13,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 758 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 02:03:13,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-11-07 02:03:13,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1396. [2021-11-07 02:03:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1347 states have (on average 1.283593170007424) internal successors, (1729), 1395 states have internal predecessors, (1729), 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 02:03:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1729 transitions. [2021-11-07 02:03:13,483 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1729 transitions. Word has length 380 [2021-11-07 02:03:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:13,486 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 1729 transitions. [2021-11-07 02:03:13,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 190.0) internal successors, (380), 2 states have internal predecessors, (380), 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 02:03:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1729 transitions. [2021-11-07 02:03:13,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-11-07 02:03:13,500 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:13,501 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:13,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:03:13,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:03:13,728 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:03:13,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:13,729 INFO L85 PathProgramCache]: Analyzing trace with hash -519098983, now seen corresponding path program 1 times [2021-11-07 02:03:13,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:13,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651240873] [2021-11-07 02:03:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:13,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:13,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:13,747 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:13,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:03:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:19,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 3775 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:03:19,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:20,788 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 02:03:20,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:21,742 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 02:03:21,743 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:21,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651240873] [2021-11-07 02:03:21,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651240873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:21,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:03:21,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:03:21,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935211114] [2021-11-07 02:03:21,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:03:21,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:03:21,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:03:21,749 INFO L87 Difference]: Start difference. First operand 1396 states and 1729 transitions. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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 02:03:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:23,151 INFO L93 Difference]: Finished difference Result 2553 states and 3284 transitions. [2021-11-07 02:03:23,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:03:23,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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 380 [2021-11-07 02:03:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:23,164 INFO L225 Difference]: With dead ends: 2553 [2021-11-07 02:03:23,164 INFO L226 Difference]: Without dead ends: 1473 [2021-11-07 02:03:23,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 756 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 02:03:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2021-11-07 02:03:23,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1473. [2021-11-07 02:03:23,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1424 states have (on average 1.2682584269662922) internal successors, (1806), 1472 states have internal predecessors, (1806), 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 02:03:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 1806 transitions. [2021-11-07 02:03:23,221 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 1806 transitions. Word has length 380 [2021-11-07 02:03:23,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:23,223 INFO L470 AbstractCegarLoop]: Abstraction has 1473 states and 1806 transitions. [2021-11-07 02:03:23,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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 02:03:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 1806 transitions. [2021-11-07 02:03:23,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-11-07 02:03:23,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:23,235 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:23,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:23,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:03:23,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:03:23,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:23,461 INFO L85 PathProgramCache]: Analyzing trace with hash 581499295, now seen corresponding path program 1 times [2021-11-07 02:03:23,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:23,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577900020] [2021-11-07 02:03:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:23,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:23,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:23,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:23,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:03:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:29,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 4160 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:03:29,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:03:31,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:03:32,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:32,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577900020] [2021-11-07 02:03:32,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577900020] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:03:32,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1991529435] [2021-11-07 02:03:32,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:32,394 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:03:32,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:03:32,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:03:32,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:03:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:35,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 4160 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:03:35,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:03:36,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:03:36,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1991529435] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:36,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:03:36,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:03:36,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680834588] [2021-11-07 02:03:36,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:03:36,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:36,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:03:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:36,840 INFO L87 Difference]: Start difference. First operand 1473 states and 1806 transitions. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 02:03:37,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:37,174 INFO L93 Difference]: Finished difference Result 3331 states and 4216 transitions. [2021-11-07 02:03:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:03:37,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 457 [2021-11-07 02:03:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:37,190 INFO L225 Difference]: With dead ends: 3331 [2021-11-07 02:03:37,191 INFO L226 Difference]: Without dead ends: 2367 [2021-11-07 02:03:37,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1824 GetRequests, 1817 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:37,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2021-11-07 02:03:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2215. [2021-11-07 02:03:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2166 states have (on average 1.3180978762696214) internal successors, (2855), 2214 states have internal predecessors, (2855), 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 02:03:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2855 transitions. [2021-11-07 02:03:37,274 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2855 transitions. Word has length 457 [2021-11-07 02:03:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:37,276 INFO L470 AbstractCegarLoop]: Abstraction has 2215 states and 2855 transitions. [2021-11-07 02:03:37,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 02:03:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2855 transitions. [2021-11-07 02:03:37,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-11-07 02:03:37,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:37,287 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:37,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:37,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 02:03:37,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:03:37,708 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:03:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2021887535, now seen corresponding path program 1 times [2021-11-07 02:03:37,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:37,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305521068] [2021-11-07 02:03:37,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:37,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:37,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:37,713 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:37,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:03:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:43,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 4130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:03:43,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:03:44,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:03:46,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:46,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305521068] [2021-11-07 02:03:46,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305521068] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:03:46,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [222235961] [2021-11-07 02:03:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:46,220 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:03:46,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:03:46,236 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:03:46,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:03:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:49,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 4130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:03:49,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:03:50,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:03:50,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [222235961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:50,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:03:50,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:03:50,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686181670] [2021-11-07 02:03:50,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:03:50,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:03:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:50,746 INFO L87 Difference]: Start difference. First operand 2215 states and 2855 transitions. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 02:03:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:51,098 INFO L93 Difference]: Finished difference Result 5570 states and 7383 transitions. [2021-11-07 02:03:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:03:51,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 457 [2021-11-07 02:03:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:51,127 INFO L225 Difference]: With dead ends: 5570 [2021-11-07 02:03:51,135 INFO L226 Difference]: Without dead ends: 3864 [2021-11-07 02:03:51,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1824 GetRequests, 1817 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:03:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2021-11-07 02:03:51,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3708. [2021-11-07 02:03:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 3659 states have (on average 1.3582946160153047) internal successors, (4970), 3707 states have internal predecessors, (4970), 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 02:03:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 4970 transitions. [2021-11-07 02:03:51,342 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 4970 transitions. Word has length 457 [2021-11-07 02:03:51,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:51,343 INFO L470 AbstractCegarLoop]: Abstraction has 3708 states and 4970 transitions. [2021-11-07 02:03:51,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 02:03:51,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 4970 transitions. [2021-11-07 02:03:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-07 02:03:51,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:51,349 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:51,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:51,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:51,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:03:51,770 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:03:51,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash -156202635, now seen corresponding path program 1 times [2021-11-07 02:03:51,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:51,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741695363] [2021-11-07 02:03:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:51,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:51,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:51,779 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:51,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:03:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:58,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 4082 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:03:58,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:04:00,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:04:01,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:01,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741695363] [2021-11-07 02:04:01,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741695363] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:04:01,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1979939971] [2021-11-07 02:04:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:01,315 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:01,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:04:01,319 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:04:01,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:04:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:05,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 4082 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:04:05,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:04:07,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:04:10,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1979939971] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:10,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:04:10,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:04:10,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660629577] [2021-11-07 02:04:10,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:04:10,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:10,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:04:10,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:10,236 INFO L87 Difference]: Start difference. First operand 3708 states and 4970 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 2 states have internal predecessors, (420), 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 02:04:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:10,342 INFO L93 Difference]: Finished difference Result 3708 states and 4970 transitions. [2021-11-07 02:04:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:04:10,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 2 states have internal predecessors, (420), 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 458 [2021-11-07 02:04:10,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:10,366 INFO L225 Difference]: With dead ends: 3708 [2021-11-07 02:04:10,366 INFO L226 Difference]: Without dead ends: 3706 [2021-11-07 02:04:10,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1828 GetRequests, 1821 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:10,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2021-11-07 02:04:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3706. [2021-11-07 02:04:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3658 states have (on average 1.3581191908146528) internal successors, (4968), 3705 states have internal predecessors, (4968), 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 02:04:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 4968 transitions. [2021-11-07 02:04:10,539 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 4968 transitions. Word has length 458 [2021-11-07 02:04:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:10,540 INFO L470 AbstractCegarLoop]: Abstraction has 3706 states and 4968 transitions. [2021-11-07 02:04:10,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 2 states have internal predecessors, (420), 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 02:04:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 4968 transitions. [2021-11-07 02:04:10,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2021-11-07 02:04:10,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:10,545 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:04:10,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:10,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:10,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:10,968 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:04:10,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:10,968 INFO L85 PathProgramCache]: Analyzing trace with hash -547303799, now seen corresponding path program 1 times [2021-11-07 02:04:10,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:10,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812648903] [2021-11-07 02:04:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:10,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:10,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:10,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:11,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:04:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:18,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 4083 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:04:18,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:04:20,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:04:21,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:21,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812648903] [2021-11-07 02:04:21,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812648903] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:04:21,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1593650228] [2021-11-07 02:04:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:21,398 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:21,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:04:21,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:04:21,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:04:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:25,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 4083 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:04:25,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:04:28,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:04:30,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1593650228] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:30,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:04:30,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:04:30,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071578808] [2021-11-07 02:04:30,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:04:30,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:30,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:04:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:30,418 INFO L87 Difference]: Start difference. First operand 3706 states and 4968 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 2 states have internal predecessors, (421), 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 02:04:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:30,540 INFO L93 Difference]: Finished difference Result 3706 states and 4968 transitions. [2021-11-07 02:04:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:04:30,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 2 states have internal predecessors, (421), 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 459 [2021-11-07 02:04:30,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:30,569 INFO L225 Difference]: With dead ends: 3706 [2021-11-07 02:04:30,569 INFO L226 Difference]: Without dead ends: 3704 [2021-11-07 02:04:30,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1832 GetRequests, 1825 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:30,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2021-11-07 02:04:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 3704. [2021-11-07 02:04:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3657 states have (on average 1.3579436696745966) internal successors, (4966), 3703 states have internal predecessors, (4966), 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 02:04:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 4966 transitions. [2021-11-07 02:04:30,770 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 4966 transitions. Word has length 459 [2021-11-07 02:04:30,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:30,771 INFO L470 AbstractCegarLoop]: Abstraction has 3704 states and 4966 transitions. [2021-11-07 02:04:30,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 2 states have internal predecessors, (421), 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 02:04:30,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 4966 transitions. [2021-11-07 02:04:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-11-07 02:04:30,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:30,779 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:04:30,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 02:04:31,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:31,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:31,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:04:31,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1543111452, now seen corresponding path program 1 times [2021-11-07 02:04:31,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:31,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749802643] [2021-11-07 02:04:31,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:31,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:31,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:31,209 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:31,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:04:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:39,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 4166 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:04:39,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:04:41,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:04:42,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:42,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749802643] [2021-11-07 02:04:42,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749802643] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:04:42,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1594596038] [2021-11-07 02:04:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:42,425 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:42,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:04:42,428 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:04:42,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:04:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:47,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 4166 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:04:47,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:04:48,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:04:49,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1594596038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:49,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:04:49,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:04:49,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320979045] [2021-11-07 02:04:49,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:04:49,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:49,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:04:49,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:49,506 INFO L87 Difference]: Start difference. First operand 3704 states and 4966 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 02:04:50,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:50,115 INFO L93 Difference]: Finished difference Result 9867 states and 13487 transitions. [2021-11-07 02:04:50,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:04:50,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 460 [2021-11-07 02:04:50,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:50,162 INFO L225 Difference]: With dead ends: 9867 [2021-11-07 02:04:50,163 INFO L226 Difference]: Without dead ends: 6672 [2021-11-07 02:04:50,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1836 GetRequests, 1829 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:04:50,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6672 states. [2021-11-07 02:04:50,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6672 to 6546. [2021-11-07 02:04:50,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6546 states, 6499 states have (on average 1.3832897368825974) internal successors, (8990), 6545 states have internal predecessors, (8990), 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 02:04:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6546 states to 6546 states and 8990 transitions. [2021-11-07 02:04:50,501 INFO L78 Accepts]: Start accepts. Automaton has 6546 states and 8990 transitions. Word has length 460 [2021-11-07 02:04:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:50,502 INFO L470 AbstractCegarLoop]: Abstraction has 6546 states and 8990 transitions. [2021-11-07 02:04:50,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 02:04:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6546 states and 8990 transitions. [2021-11-07 02:04:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-11-07 02:04:50,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:50,508 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:04:50,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:50,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:50,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:50,930 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:04:50,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:50,930 INFO L85 PathProgramCache]: Analyzing trace with hash 213462015, now seen corresponding path program 1 times [2021-11-07 02:04:50,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:50,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041736845] [2021-11-07 02:04:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:50,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:50,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:50,936 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:50,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:04:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:59,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 4084 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:04:59,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:05:00,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:05:02,441 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:02,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041736845] [2021-11-07 02:05:02,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041736845] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:02,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [225939979] [2021-11-07 02:05:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:02,442 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:02,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:02,444 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:02,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:05:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:08,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 4084 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:05:08,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:05:10,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:05:12,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [225939979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:12,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:05:12,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:05:12,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381250759] [2021-11-07 02:05:12,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:05:12,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:12,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:05:12,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:12,889 INFO L87 Difference]: Start difference. First operand 6546 states and 8990 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 2 states have internal predecessors, (422), 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 02:05:13,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:13,137 INFO L93 Difference]: Finished difference Result 6546 states and 8990 transitions. [2021-11-07 02:05:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:05:13,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 2 states have internal predecessors, (422), 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 460 [2021-11-07 02:05:13,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:13,189 INFO L225 Difference]: With dead ends: 6546 [2021-11-07 02:05:13,189 INFO L226 Difference]: Without dead ends: 6544 [2021-11-07 02:05:13,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1836 GetRequests, 1829 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2021-11-07 02:05:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 6544. [2021-11-07 02:05:13,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6544 states, 6498 states have (on average 1.3831948291782086) internal successors, (8988), 6543 states have internal predecessors, (8988), 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 02:05:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6544 states to 6544 states and 8988 transitions. [2021-11-07 02:05:13,540 INFO L78 Accepts]: Start accepts. Automaton has 6544 states and 8988 transitions. Word has length 460 [2021-11-07 02:05:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:13,541 INFO L470 AbstractCegarLoop]: Abstraction has 6544 states and 8988 transitions. [2021-11-07 02:05:13,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 2 states have internal predecessors, (422), 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 02:05:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 6544 states and 8988 transitions. [2021-11-07 02:05:13,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-11-07 02:05:13,547 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:13,547 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:05:13,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:13,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:13,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:13,962 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:05:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1431270148, now seen corresponding path program 1 times [2021-11-07 02:05:13,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:13,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070422298] [2021-11-07 02:05:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:13,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:13,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:13,968 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:13,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:05:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:23,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 4199 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:05:23,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:05:24,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:05:25,539 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:25,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070422298] [2021-11-07 02:05:25,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070422298] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:25,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [795608775] [2021-11-07 02:05:25,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:25,540 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:25,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:25,540 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:25,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 02:05:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:31,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 4199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:05:31,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:05:32,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:05:33,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [795608775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:33,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:05:33,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:05:33,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769885237] [2021-11-07 02:05:33,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:05:33,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:05:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:33,439 INFO L87 Difference]: Start difference. First operand 6544 states and 8988 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 02:05:33,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:33,967 INFO L93 Difference]: Finished difference Result 18354 states and 25484 transitions. [2021-11-07 02:05:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:05:33,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 460 [2021-11-07 02:05:33,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:34,001 INFO L225 Difference]: With dead ends: 18354 [2021-11-07 02:05:34,001 INFO L226 Difference]: Without dead ends: 12319 [2021-11-07 02:05:34,017 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1836 GetRequests, 1829 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12319 states. [2021-11-07 02:05:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12319 to 12152. [2021-11-07 02:05:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12152 states, 12106 states have (on average 1.3976540558400794) internal successors, (16920), 12151 states have internal predecessors, (16920), 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 02:05:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12152 states to 12152 states and 16920 transitions. [2021-11-07 02:05:34,711 INFO L78 Accepts]: Start accepts. Automaton has 12152 states and 16920 transitions. Word has length 460 [2021-11-07 02:05:34,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:34,712 INFO L470 AbstractCegarLoop]: Abstraction has 12152 states and 16920 transitions. [2021-11-07 02:05:34,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 02:05:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 12152 states and 16920 transitions. [2021-11-07 02:05:34,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-07 02:05:34,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:34,718 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:05:34,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:35,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:35,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:35,143 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:05:35,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:35,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2031368839, now seen corresponding path program 1 times [2021-11-07 02:05:35,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:35,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13446829] [2021-11-07 02:05:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:35,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:35,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:35,149 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:35,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 02:05:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:45,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 4201 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:05:45,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:05:46,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:05:47,587 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:47,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13446829] [2021-11-07 02:05:47,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13446829] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:47,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1023681909] [2021-11-07 02:05:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:47,588 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:47,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:47,589 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:47,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 02:05:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:54,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 4201 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:05:54,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:05:55,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:05:56,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1023681909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:56,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:05:56,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:05:56,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515352656] [2021-11-07 02:05:56,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:05:56,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:56,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:05:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:56,546 INFO L87 Difference]: Start difference. First operand 12152 states and 16920 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 02:05:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:57,586 INFO L93 Difference]: Finished difference Result 34922 states and 48920 transitions. [2021-11-07 02:05:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:05:57,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 461 [2021-11-07 02:05:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:57,656 INFO L225 Difference]: With dead ends: 34922 [2021-11-07 02:05:57,656 INFO L226 Difference]: Without dead ends: 23279 [2021-11-07 02:05:57,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1840 GetRequests, 1833 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:05:57,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23279 states. [2021-11-07 02:05:58,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23279 to 23112. [2021-11-07 02:05:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23112 states, 23066 states have (on average 1.4053585363738836) internal successors, (32416), 23111 states have internal predecessors, (32416), 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 02:05:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23112 states to 23112 states and 32416 transitions. [2021-11-07 02:05:58,879 INFO L78 Accepts]: Start accepts. Automaton has 23112 states and 32416 transitions. Word has length 461 [2021-11-07 02:05:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:58,880 INFO L470 AbstractCegarLoop]: Abstraction has 23112 states and 32416 transitions. [2021-11-07 02:05:58,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 02:05:58,881 INFO L276 IsEmpty]: Start isEmpty. Operand 23112 states and 32416 transitions. [2021-11-07 02:05:58,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-07 02:05:58,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:58,886 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:05:59,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:59,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:59,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:59,312 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:05:59,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:59,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1972601517, now seen corresponding path program 1 times [2021-11-07 02:05:59,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:59,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620798978] [2021-11-07 02:05:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:59,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:59,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:59,318 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:59,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 02:06:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:10,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 4085 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:06:10,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:11,426 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:06:11,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:12,838 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:06:12,838 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:12,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620798978] [2021-11-07 02:06:12,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620798978] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:06:12,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1844708413] [2021-11-07 02:06:12,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:12,839 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:12,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:06:12,840 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:06:12,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 02:06:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:20,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 4085 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:20,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:06:23,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:06:25,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1844708413] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:25,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:06:25,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:06:25,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446720181] [2021-11-07 02:06:25,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:06:25,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:25,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:06:25,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:25,603 INFO L87 Difference]: Start difference. First operand 23112 states and 32416 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 2 states have internal predecessors, (423), 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 02:06:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:26,593 INFO L93 Difference]: Finished difference Result 23112 states and 32416 transitions. [2021-11-07 02:06:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 2 states have internal predecessors, (423), 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 461 [2021-11-07 02:06:26,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:26,674 INFO L225 Difference]: With dead ends: 23112 [2021-11-07 02:06:26,674 INFO L226 Difference]: Without dead ends: 23060 [2021-11-07 02:06:26,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1840 GetRequests, 1833 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23060 states. [2021-11-07 02:06:28,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23060 to 23060. [2021-11-07 02:06:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23060 states, 23037 states have (on average 1.3773928896991796) internal successors, (31731), 23059 states have internal predecessors, (31731), 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 02:06:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23060 states to 23060 states and 31731 transitions. [2021-11-07 02:06:28,315 INFO L78 Accepts]: Start accepts. Automaton has 23060 states and 31731 transitions. Word has length 461 [2021-11-07 02:06:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:28,316 INFO L470 AbstractCegarLoop]: Abstraction has 23060 states and 31731 transitions. [2021-11-07 02:06:28,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 2 states have internal predecessors, (423), 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 02:06:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 23060 states and 31731 transitions. [2021-11-07 02:06:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-11-07 02:06:28,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:28,324 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:28,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:28,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-07 02:06:28,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:28,725 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:06:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1692832135, now seen corresponding path program 1 times [2021-11-07 02:06:28,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:28,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434684723] [2021-11-07 02:06:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:28,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:28,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:28,733 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:28,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 02:06:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:40,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 4176 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:06:40,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:06:41,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:06:43,492 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:43,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434684723] [2021-11-07 02:06:43,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434684723] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:06:43,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [579953254] [2021-11-07 02:06:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:43,493 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:43,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:06:43,493 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:06:43,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 02:06:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:52,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 4176 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:52,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:06:53,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:06:54,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [579953254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:54,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:06:54,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:06:54,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48268] [2021-11-07 02:06:54,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:06:54,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:54,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:06:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:54,351 INFO L87 Difference]: Start difference. First operand 23060 states and 31731 transitions. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 02:06:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:56,404 INFO L93 Difference]: Finished difference Result 67528 states and 93343 transitions. [2021-11-07 02:06:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:56,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 469 [2021-11-07 02:06:56,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:56,505 INFO L225 Difference]: With dead ends: 67528 [2021-11-07 02:06:56,505 INFO L226 Difference]: Without dead ends: 44977 [2021-11-07 02:06:56,551 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1872 GetRequests, 1865 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:06:56,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44977 states. [2021-11-07 02:06:58,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44977 to 44916. [2021-11-07 02:06:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44916 states, 44893 states have (on average 1.3832668790234557) internal successors, (62099), 44915 states have internal predecessors, (62099), 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 02:06:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44916 states to 44916 states and 62099 transitions. [2021-11-07 02:06:59,197 INFO L78 Accepts]: Start accepts. Automaton has 44916 states and 62099 transitions. Word has length 469 [2021-11-07 02:06:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:59,198 INFO L470 AbstractCegarLoop]: Abstraction has 44916 states and 62099 transitions. [2021-11-07 02:06:59,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 02:06:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 44916 states and 62099 transitions. [2021-11-07 02:06:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2021-11-07 02:06:59,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:59,206 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:59,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:59,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-07 02:06:59,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:59,620 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:06:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:59,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1934452670, now seen corresponding path program 1 times [2021-11-07 02:06:59,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:59,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411964805] [2021-11-07 02:06:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:59,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:59,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:59,626 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:59,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 02:07:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:12,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 4204 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:07:12,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:07:13,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:07:15,128 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:15,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411964805] [2021-11-07 02:07:15,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411964805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:07:15,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [722205921] [2021-11-07 02:07:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:15,129 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:15,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:07:15,130 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:07:15,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 02:07:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:24,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 4204 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:07:24,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:07:25,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:07:26,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [722205921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:26,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:07:26,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:07:26,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419712848] [2021-11-07 02:07:26,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:07:26,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:07:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:07:26,183 INFO L87 Difference]: Start difference. First operand 44916 states and 62099 transitions. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 02:07:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:30,108 INFO L93 Difference]: Finished difference Result 130212 states and 180509 transitions. [2021-11-07 02:07:30,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:07:30,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 471 [2021-11-07 02:07:30,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:30,446 INFO L225 Difference]: With dead ends: 130212 [2021-11-07 02:07:30,446 INFO L226 Difference]: Without dead ends: 85805 [2021-11-07 02:07:30,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1880 GetRequests, 1873 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:07:30,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85805 states. [2021-11-07 02:07:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85805 to 85748. [2021-11-07 02:07:34,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85748 states, 85725 states have (on average 1.3866083406240886) internal successors, (118867), 85747 states have internal predecessors, (118867), 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 02:07:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85748 states to 85748 states and 118867 transitions. [2021-11-07 02:07:35,416 INFO L78 Accepts]: Start accepts. Automaton has 85748 states and 118867 transitions. Word has length 471 [2021-11-07 02:07:35,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:35,417 INFO L470 AbstractCegarLoop]: Abstraction has 85748 states and 118867 transitions. [2021-11-07 02:07:35,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 02:07:35,418 INFO L276 IsEmpty]: Start isEmpty. Operand 85748 states and 118867 transitions. [2021-11-07 02:07:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2021-11-07 02:07:35,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:35,426 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:35,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:35,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:35,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:35,852 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 46 more)] === [2021-11-07 02:07:35,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:35,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1243482352, now seen corresponding path program 1 times [2021-11-07 02:07:35,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:35,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733653956] [2021-11-07 02:07:35,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:35,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:35,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:35,858 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:35,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-07 02:07:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:48,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 4240 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:07:48,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:07:50,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-07 02:07:51,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:51,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733653956] [2021-11-07 02:07:51,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733653956] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:07:51,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [946924587] [2021-11-07 02:07:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:51,558 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:07:51,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:07:51,558 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:07:51,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17bf7d0c-d00a-402e-932e-64ce0b3896ce/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-07 02:08:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:01,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 4240 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:01,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:08:02,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-07 02:08:03,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [946924587] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:03,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:03,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:08:03,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960845258] [2021-11-07 02:08:03,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:03,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:03,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:03,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:08:03,685 INFO L87 Difference]: Start difference. First operand 85748 states and 118867 transitions. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 02:08:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:12,007 INFO L93 Difference]: Finished difference Result 252089 states and 349809 transitions. [2021-11-07 02:08:12,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:12,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 472 [2021-11-07 02:08:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:12,389 INFO L225 Difference]: With dead ends: 252089 [2021-11-07 02:08:12,390 INFO L226 Difference]: Without dead ends: 166850 [2021-11-07 02:08:12,478 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1884 GetRequests, 1877 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:08:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166850 states.