./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/mbpr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:34:17,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:34:17,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:34:17,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:34:17,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:34:17,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:34:17,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:34:17,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:34:17,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:34:17,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:34:17,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:34:17,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:34:17,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:34:17,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:34:17,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:34:17,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:34:17,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:34:17,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:34:17,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:34:17,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:34:17,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:34:17,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:34:17,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:34:17,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:34:17,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:34:17,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:34:17,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:34:17,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:34:17,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:34:17,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:34:17,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:34:17,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:34:17,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:34:17,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:34:17,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:34:17,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:34:17,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:34:17,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:34:17,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:34:17,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:34:17,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:34:17,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:34:17,640 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:34:17,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:34:17,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:34:17,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:34:17,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:34:17,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:34:17,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:34:17,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:34:17,642 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:34:17,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:34:17,642 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:34:17,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:34:17,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:34:17,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:34:17,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:34:17,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:34:17,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:34:17,643 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:34:17,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:34:17,644 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:34:17,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:34:17,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:34:17,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:34:17,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:34:17,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:34:17,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:34:17,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:34:17,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:34:17,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:34:17,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:34:17,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:34:17,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:34:17,646 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:34:17,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:34:17,646 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:34:17,646 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 [2022-12-13 20:34:17,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:34:17,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:34:17,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:34:17,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:34:17,825 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:34:17,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-tiling/mbpr3.c [2022-12-13 20:34:20,400 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:34:20,550 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:34:20,550 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/sv-benchmarks/c/array-tiling/mbpr3.c [2022-12-13 20:34:20,555 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/data/7b0a571bf/3268fef7236346daa458acb7edd994d8/FLAG3e31b5ad4 [2022-12-13 20:34:20,565 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/data/7b0a571bf/3268fef7236346daa458acb7edd994d8 [2022-12-13 20:34:20,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:34:20,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:34:20,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:34:20,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:34:20,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:34:20,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656a0a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20, skipping insertion in model container [2022-12-13 20:34:20,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:34:20,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:34:20,694 WARN L237 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_da837a84-bbdc-44cc-a61c-574dcb06b1cf/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2022-12-13 20:34:20,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:34:20,721 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:34:20,732 WARN L237 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_da837a84-bbdc-44cc-a61c-574dcb06b1cf/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2022-12-13 20:34:20,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:34:20,753 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:34:20,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20 WrapperNode [2022-12-13 20:34:20,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:34:20,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:34:20,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:34:20,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:34:20,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,786 INFO L138 Inliner]: procedures = 15, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2022-12-13 20:34:20,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:34:20,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:34:20,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:34:20,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:34:20,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,808 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:34:20,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:34:20,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:34:20,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:34:20,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (1/1) ... [2022-12-13 20:34:20,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:34:20,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:20,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:34:20,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:34:20,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:34:20,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:34:20,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:34:20,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:34:20,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:34:20,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:34:20,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:34:20,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:34:20,950 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:34:20,952 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:34:21,115 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:34:21,121 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:34:21,121 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 20:34:21,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:34:21 BoogieIcfgContainer [2022-12-13 20:34:21,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:34:21,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:34:21,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:34:21,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:34:21,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:34:20" (1/3) ... [2022-12-13 20:34:21,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681fee3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:34:21, skipping insertion in model container [2022-12-13 20:34:21,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:20" (2/3) ... [2022-12-13 20:34:21,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681fee3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:34:21, skipping insertion in model container [2022-12-13 20:34:21,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:34:21" (3/3) ... [2022-12-13 20:34:21,130 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2022-12-13 20:34:21,146 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:34:21,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:34:21,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:34:21,191 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@22ab303b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:34:21,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:34:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:34:21,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 20:34:21,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:21,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:34:21,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:21,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:21,205 INFO L85 PathProgramCache]: Analyzing trace with hash -565609025, now seen corresponding path program 1 times [2022-12-13 20:34:21,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:21,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480048248] [2022-12-13 20:34:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:21,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:34:21,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:21,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480048248] [2022-12-13 20:34:21,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480048248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:34:21,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:34:21,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:34:21,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243558497] [2022-12-13 20:34:21,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:34:21,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:34:21,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:21,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:34:21,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:34:21,371 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2022-12-13 20:34:21,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:21,386 INFO L93 Difference]: Finished difference Result 63 states and 90 transitions. [2022-12-13 20:34:21,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:34:21,388 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 17 [2022-12-13 20:34:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:21,393 INFO L225 Difference]: With dead ends: 63 [2022-12-13 20:34:21,394 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 20:34:21,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:34:21,401 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:21,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:34:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 20:34:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-13 20:34:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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) [2022-12-13 20:34:21,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-12-13 20:34:21,431 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 17 [2022-12-13 20:34:21,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:21,432 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-12-13 20:34:21,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2022-12-13 20:34:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-12-13 20:34:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 20:34:21,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:21,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:34:21,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:34:21,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1539779609, now seen corresponding path program 1 times [2022-12-13 20:34:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:21,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405261975] [2022-12-13 20:34:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:21,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:34:21,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:21,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405261975] [2022-12-13 20:34:21,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405261975] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:34:21,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:34:21,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:34:21,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799219326] [2022-12-13 20:34:21,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:34:21,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:34:21,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:21,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:34:21,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:34:21,597 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-13 20:34:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:21,633 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-12-13 20:34:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:34:21,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-12-13 20:34:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:21,634 INFO L225 Difference]: With dead ends: 38 [2022-12-13 20:34:21,634 INFO L226 Difference]: Without dead ends: 36 [2022-12-13 20:34:21,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:34:21,636 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:21,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:34:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-13 20:34:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2022-12-13 20:34:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 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) [2022-12-13 20:34:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-12-13 20:34:21,642 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 17 [2022-12-13 20:34:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:21,643 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-12-13 20:34:21,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-13 20:34:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-12-13 20:34:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 20:34:21,643 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:21,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:34:21,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:34:21,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1539720027, now seen corresponding path program 1 times [2022-12-13 20:34:21,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:21,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881234369] [2022-12-13 20:34:21,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:21,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:34:21,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:21,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881234369] [2022-12-13 20:34:21,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881234369] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:34:21,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:34:21,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:34:21,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426280366] [2022-12-13 20:34:21,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:34:21,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:34:21,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:21,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:34:21,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:34:21,886 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-12-13 20:34:21,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:21,973 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2022-12-13 20:34:21,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:34:21,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2022-12-13 20:34:21,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:21,975 INFO L225 Difference]: With dead ends: 64 [2022-12-13 20:34:21,975 INFO L226 Difference]: Without dead ends: 43 [2022-12-13 20:34:21,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:34:21,976 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 88 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:21,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 23 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:34:21,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-13 20:34:21,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2022-12-13 20:34:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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) [2022-12-13 20:34:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-12-13 20:34:21,985 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 17 [2022-12-13 20:34:21,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:21,985 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-12-13 20:34:21,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-12-13 20:34:21,985 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-12-13 20:34:21,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 20:34:21,986 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:21,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:34:21,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:34:21,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:21,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2048606314, now seen corresponding path program 1 times [2022-12-13 20:34:21,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:21,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053245463] [2022-12-13 20:34:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:21,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:34:22,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:22,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053245463] [2022-12-13 20:34:22,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053245463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:34:22,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:34:22,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:34:22,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439290568] [2022-12-13 20:34:22,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:34:22,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:34:22,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:22,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:34:22,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:34:22,085 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-12-13 20:34:22,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:22,100 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-12-13 20:34:22,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:34:22,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2022-12-13 20:34:22,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:22,102 INFO L225 Difference]: With dead ends: 49 [2022-12-13 20:34:22,102 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 20:34:22,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:34:22,104 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:22,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:34:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 20:34:22,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-12-13 20:34:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 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) [2022-12-13 20:34:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-12-13 20:34:22,108 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2022-12-13 20:34:22,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:22,108 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-12-13 20:34:22,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-12-13 20:34:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-12-13 20:34:22,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 20:34:22,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:22,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:34:22,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:34:22,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:22,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:22,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1853333972, now seen corresponding path program 1 times [2022-12-13 20:34:22,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:22,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363836458] [2022-12-13 20:34:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:22,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:34:22,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:22,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363836458] [2022-12-13 20:34:22,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363836458] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:34:22,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110156666] [2022-12-13 20:34:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:22,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:22,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:22,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:34:22,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:34:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:22,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 20:34:22,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:34:23,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:34:23,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:23,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:23,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-12-13 20:34:23,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-13 20:34:23,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:23,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-12-13 20:34:23,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-13 20:34:23,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:23,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:23,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:34:23,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2022-12-13 20:34:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:34:23,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:34:23,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2022-12-13 20:34:23,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 75 [2022-12-13 20:34:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:34:24,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110156666] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:34:24,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:34:24,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 13] total 29 [2022-12-13 20:34:24,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413528703] [2022-12-13 20:34:24,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:34:24,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 20:34:24,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:24,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 20:34:24,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2022-12-13 20:34:24,081 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 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) [2022-12-13 20:34:25,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:25,135 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2022-12-13 20:34:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 20:34:25,135 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 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 29 [2022-12-13 20:34:25,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:25,136 INFO L225 Difference]: With dead ends: 103 [2022-12-13 20:34:25,136 INFO L226 Difference]: Without dead ends: 76 [2022-12-13 20:34:25,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=618, Invalid=1832, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 20:34:25,137 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 465 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:25,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 61 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:34:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-13 20:34:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 50. [2022-12-13 20:34:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:34:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2022-12-13 20:34:25,143 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 29 [2022-12-13 20:34:25,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:25,144 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2022-12-13 20:34:25,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 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) [2022-12-13 20:34:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2022-12-13 20:34:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 20:34:25,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:25,145 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 20:34:25,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:34:25,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:25,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:25,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:25,349 INFO L85 PathProgramCache]: Analyzing trace with hash -166695065, now seen corresponding path program 1 times [2022-12-13 20:34:25,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:25,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071585622] [2022-12-13 20:34:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:25,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:34:25,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:25,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071585622] [2022-12-13 20:34:25,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071585622] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:34:25,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119031640] [2022-12-13 20:34:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:25,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:25,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:25,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:34:25,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:34:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:25,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 20:34:25,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:34:25,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:34:25,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:25,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:25,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-12-13 20:34:26,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-13 20:34:26,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:26,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:26,072 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:34:26,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 32 [2022-12-13 20:34:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:34:26,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:34:26,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-12-13 20:34:26,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2022-12-13 20:34:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:34:26,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119031640] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:34:26,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:34:26,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 28 [2022-12-13 20:34:26,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287795275] [2022-12-13 20:34:26,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:34:26,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 20:34:26,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 20:34:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2022-12-13 20:34:26,654 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 28 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 28 states have internal predecessors, (97), 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) [2022-12-13 20:34:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:27,319 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2022-12-13 20:34:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 20:34:27,319 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 28 states have internal predecessors, (97), 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 35 [2022-12-13 20:34:27,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:27,320 INFO L225 Difference]: With dead ends: 104 [2022-12-13 20:34:27,320 INFO L226 Difference]: Without dead ends: 67 [2022-12-13 20:34:27,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=434, Invalid=1546, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 20:34:27,321 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 226 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:27,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 109 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:34:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-13 20:34:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48. [2022-12-13 20:34:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 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) [2022-12-13 20:34:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-12-13 20:34:27,326 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 35 [2022-12-13 20:34:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:27,326 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-12-13 20:34:27,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 28 states have internal predecessors, (97), 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) [2022-12-13 20:34:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-12-13 20:34:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 20:34:27,327 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:27,327 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:34:27,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:34:27,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 20:34:27,529 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:27,530 INFO L85 PathProgramCache]: Analyzing trace with hash -296121395, now seen corresponding path program 2 times [2022-12-13 20:34:27,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:27,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334373004] [2022-12-13 20:34:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:27,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:34:27,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:27,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334373004] [2022-12-13 20:34:27,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334373004] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:34:27,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357858906] [2022-12-13 20:34:27,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:34:27,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:27,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:27,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:34:27,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:34:27,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:34:27,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:34:27,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 20:34:27,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:34:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:34:28,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:34:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:34:28,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357858906] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:34:28,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:34:28,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 27 [2022-12-13 20:34:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595976995] [2022-12-13 20:34:28,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:34:28,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 20:34:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:28,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 20:34:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2022-12-13 20:34:28,280 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 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) [2022-12-13 20:34:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:28,529 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2022-12-13 20:34:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 20:34:28,529 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-12-13 20:34:28,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:28,530 INFO L225 Difference]: With dead ends: 136 [2022-12-13 20:34:28,530 INFO L226 Difference]: Without dead ends: 69 [2022-12-13 20:34:28,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2022-12-13 20:34:28,532 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 203 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:28,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 103 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:34:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-13 20:34:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2022-12-13 20:34:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 59 states have internal predecessors, (65), 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) [2022-12-13 20:34:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2022-12-13 20:34:28,542 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 47 [2022-12-13 20:34:28,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:28,542 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2022-12-13 20:34:28,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 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) [2022-12-13 20:34:28,542 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2022-12-13 20:34:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 20:34:28,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:28,544 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2022-12-13 20:34:28,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:34:28,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:28,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:28,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:28,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1825837756, now seen corresponding path program 3 times [2022-12-13 20:34:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:28,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578954410] [2022-12-13 20:34:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:28,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 20:34:29,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:29,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578954410] [2022-12-13 20:34:29,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578954410] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:34:29,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119336415] [2022-12-13 20:34:29,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:34:29,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:29,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:29,830 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:34:29,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:34:30,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 20:34:30,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:34:30,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-13 20:34:30,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:34:30,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:34:30,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-13 20:34:30,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:30,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:34:30,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:30,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:30,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:34:30,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-13 20:34:30,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2022-12-13 20:34:30,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:30,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:34:30,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:30,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:30,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:34:30,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 37 [2022-12-13 20:34:30,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-13 20:34:30,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:34:30,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 31 [2022-12-13 20:34:30,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:34:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:34:30,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:34:31,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-13 20:34:31,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-12-13 20:34:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:34:31,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119336415] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:34:31,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:34:31,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 17] total 39 [2022-12-13 20:34:31,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883802602] [2022-12-13 20:34:31,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:34:31,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 20:34:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:31,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 20:34:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1255, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 20:34:31,334 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 39 states, 39 states have (on average 4.128205128205129) internal successors, (161), 39 states have internal predecessors, (161), 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) [2022-12-13 20:34:33,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:33,485 INFO L93 Difference]: Finished difference Result 243 states and 268 transitions. [2022-12-13 20:34:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-13 20:34:33,485 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.128205128205129) internal successors, (161), 39 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-12-13 20:34:33,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:33,487 INFO L225 Difference]: With dead ends: 243 [2022-12-13 20:34:33,487 INFO L226 Difference]: Without dead ends: 208 [2022-12-13 20:34:33,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 93 SyntacticMatches, 12 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1712 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1202, Invalid=4960, Unknown=0, NotChecked=0, Total=6162 [2022-12-13 20:34:33,488 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 806 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:33,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 395 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 20:34:33,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-12-13 20:34:33,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 89. [2022-12-13 20:34:33,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0909090909090908) internal successors, (96), 88 states have internal predecessors, (96), 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) [2022-12-13 20:34:33,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2022-12-13 20:34:33,499 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 59 [2022-12-13 20:34:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:33,499 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2022-12-13 20:34:33,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.128205128205129) internal successors, (161), 39 states have internal predecessors, (161), 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) [2022-12-13 20:34:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2022-12-13 20:34:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 20:34:33,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:33,500 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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] [2022-12-13 20:34:33,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:34:33,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 20:34:33,701 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:33,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:33,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1778291279, now seen corresponding path program 4 times [2022-12-13 20:34:33,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:33,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358132287] [2022-12-13 20:34:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:33,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 20:34:34,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:34,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358132287] [2022-12-13 20:34:34,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358132287] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:34:34,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985650747] [2022-12-13 20:34:34,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 20:34:34,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:34,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:34,292 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:34:34,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:34:34,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 20:34:34,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:34:34,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 20:34:34,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:34:34,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:34:34,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-12-13 20:34:34,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:34,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:34:34,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:34,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:34,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:34:34,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:34:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 20:34:34,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:34:35,150 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_309 Int) (v_ArrVal_307 Int) (v_ArrVal_306 Int) (|v_ULTIMATE.start_main_~i~0#1_95| Int)) (or (< (select (store (let ((.cse0 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 8)) v_ArrVal_307) (+ (- 12) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0) v_ArrVal_306)) (+ (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_95| 12)) v_ArrVal_309) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_95|)))) is different from false [2022-12-13 20:34:35,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2022-12-13 20:34:35,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1090 treesize of output 1074 [2022-12-13 20:34:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 1 not checked. [2022-12-13 20:34:35,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985650747] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:34:35,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:34:35,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 27 [2022-12-13 20:34:35,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417050035] [2022-12-13 20:34:35,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:34:35,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 20:34:35,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:35,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 20:34:35,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=507, Unknown=1, NotChecked=48, Total=702 [2022-12-13 20:34:35,649 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 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) [2022-12-13 20:34:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:35,867 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2022-12-13 20:34:35,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:34:35,868 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-13 20:34:35,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:35,868 INFO L225 Difference]: With dead ends: 113 [2022-12-13 20:34:35,868 INFO L226 Difference]: Without dead ends: 97 [2022-12-13 20:34:35,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=582, Unknown=1, NotChecked=52, Total=812 [2022-12-13 20:34:35,869 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 90 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:35,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 149 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 286 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-12-13 20:34:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-12-13 20:34:35,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2022-12-13 20:34:35,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0795454545454546) internal successors, (95), 88 states have internal predecessors, (95), 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) [2022-12-13 20:34:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2022-12-13 20:34:35,878 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 65 [2022-12-13 20:34:35,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:35,878 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-12-13 20:34:35,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.962962962962963) internal successors, (134), 27 states have internal predecessors, (134), 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) [2022-12-13 20:34:35,878 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2022-12-13 20:34:35,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 20:34:35,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:35,879 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 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] [2022-12-13 20:34:35,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:34:36,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:36,081 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:36,081 INFO L85 PathProgramCache]: Analyzing trace with hash 757222925, now seen corresponding path program 5 times [2022-12-13 20:34:36,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:36,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943136635] [2022-12-13 20:34:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:36,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 20:34:36,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:36,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943136635] [2022-12-13 20:34:36,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943136635] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:34:36,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312747802] [2022-12-13 20:34:36,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 20:34:36,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:36,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:36,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:34:36,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:34:37,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-13 20:34:37,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:34:37,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 20:34:37,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:34:37,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:34:37,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-13 20:34:37,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:37,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:34:37,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:37,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:37,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:34:37,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-13 20:34:37,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:34:37,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2022-12-13 20:34:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 20:34:37,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:34:38,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-12-13 20:34:38,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2022-12-13 20:34:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 20:34:38,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312747802] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:34:38,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:34:38,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 16] total 40 [2022-12-13 20:34:38,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181382716] [2022-12-13 20:34:38,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:34:38,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 20:34:38,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:38,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 20:34:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 20:34:38,549 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 40 states, 40 states have (on average 4.35) internal successors, (174), 40 states have internal predecessors, (174), 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) [2022-12-13 20:34:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:40,748 INFO L93 Difference]: Finished difference Result 152 states and 166 transitions. [2022-12-13 20:34:40,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 20:34:40,748 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.35) internal successors, (174), 40 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-13 20:34:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:40,749 INFO L225 Difference]: With dead ends: 152 [2022-12-13 20:34:40,749 INFO L226 Difference]: Without dead ends: 142 [2022-12-13 20:34:40,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 106 SyntacticMatches, 7 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=848, Invalid=5004, Unknown=0, NotChecked=0, Total=5852 [2022-12-13 20:34:40,750 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 520 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:40,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 273 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 20:34:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-12-13 20:34:40,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 101. [2022-12-13 20:34:40,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.08) internal successors, (108), 100 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:34:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2022-12-13 20:34:40,760 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 65 [2022-12-13 20:34:40,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:40,760 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2022-12-13 20:34:40,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.35) internal successors, (174), 40 states have internal predecessors, (174), 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) [2022-12-13 20:34:40,761 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2022-12-13 20:34:40,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 20:34:40,761 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:40,761 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 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] [2022-12-13 20:34:40,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:34:40,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 20:34:40,963 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1552195955, now seen corresponding path program 6 times [2022-12-13 20:34:40,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:40,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191165780] [2022-12-13 20:34:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:40,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 83 proven. 37 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:34:41,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:41,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191165780] [2022-12-13 20:34:41,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191165780] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:34:41,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340527225] [2022-12-13 20:34:41,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 20:34:41,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:41,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:41,359 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:34:41,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:34:41,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-12-13 20:34:41,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:34:41,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 20:34:41,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:34:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 114 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:34:42,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:34:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 114 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:34:42,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340527225] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:34:42,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:34:42,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 14] total 41 [2022-12-13 20:34:42,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841295561] [2022-12-13 20:34:42,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:34:42,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-13 20:34:42,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:42,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-13 20:34:42,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 20:34:42,278 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand has 41 states, 41 states have (on average 4.951219512195122) internal successors, (203), 41 states have internal predecessors, (203), 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) [2022-12-13 20:34:42,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:42,610 INFO L93 Difference]: Finished difference Result 218 states and 231 transitions. [2022-12-13 20:34:42,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 20:34:42,611 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.951219512195122) internal successors, (203), 41 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 20:34:42,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:42,611 INFO L225 Difference]: With dead ends: 218 [2022-12-13 20:34:42,612 INFO L226 Difference]: Without dead ends: 99 [2022-12-13 20:34:42,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=546, Invalid=1616, Unknown=0, NotChecked=0, Total=2162 [2022-12-13 20:34:42,614 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 223 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:42,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 239 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:34:42,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-13 20:34:42,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2022-12-13 20:34:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0674157303370786) internal successors, (95), 89 states have internal predecessors, (95), 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) [2022-12-13 20:34:42,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2022-12-13 20:34:42,623 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 77 [2022-12-13 20:34:42,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:42,623 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2022-12-13 20:34:42,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.951219512195122) internal successors, (203), 41 states have internal predecessors, (203), 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) [2022-12-13 20:34:42,623 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2022-12-13 20:34:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 20:34:42,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:42,624 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:34:42,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:34:42,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:42,825 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:42,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:42,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1369982430, now seen corresponding path program 7 times [2022-12-13 20:34:42,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:42,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183298821] [2022-12-13 20:34:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:42,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 20:34:44,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:44,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183298821] [2022-12-13 20:34:44,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183298821] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:34:44,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981980558] [2022-12-13 20:34:44,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 20:34:44,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:44,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:44,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:34:44,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:34:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:44,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 20:34:44,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:34:44,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:34:44,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-12-13 20:34:44,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:44,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:34:44,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:44,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:44,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:34:44,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:34:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 42 proven. 94 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 20:34:44,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:34:45,547 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_167| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_167|)) (forall ((v_ArrVal_557 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 12 |v_ULTIMATE.start_main_~i~0#1_167|)) v_ArrVal_557) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) |c_ULTIMATE.start_main_~MINVAL~0#1|)))) is different from false [2022-12-13 20:34:45,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2022-12-13 20:34:45,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2194 treesize of output 2162 [2022-12-13 20:34:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 42 proven. 83 refuted. 0 times theorem prover too weak. 32 trivial. 2 not checked. [2022-12-13 20:34:46,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981980558] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:34:46,790 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:34:46,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 16] total 43 [2022-12-13 20:34:46,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917957695] [2022-12-13 20:34:46,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:34:46,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-13 20:34:46,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 20:34:46,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1547, Unknown=1, NotChecked=80, Total=1806 [2022-12-13 20:34:46,792 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 43 states, 43 states have (on average 4.953488372093023) internal successors, (213), 43 states have internal predecessors, (213), 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) [2022-12-13 20:34:49,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:34:49,117 INFO L93 Difference]: Finished difference Result 163 states and 179 transitions. [2022-12-13 20:34:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 20:34:49,117 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.953488372093023) internal successors, (213), 43 states have internal predecessors, (213), 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 89 [2022-12-13 20:34:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:34:49,118 INFO L225 Difference]: With dead ends: 163 [2022-12-13 20:34:49,118 INFO L226 Difference]: Without dead ends: 153 [2022-12-13 20:34:49,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 166 SyntacticMatches, 13 SemanticMatches, 78 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=754, Invalid=5411, Unknown=1, NotChecked=154, Total=6320 [2022-12-13 20:34:49,119 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 471 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 20:34:49,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 568 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 2395 Invalid, 0 Unknown, 133 Unchecked, 0.9s Time] [2022-12-13 20:34:49,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-13 20:34:49,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 96. [2022-12-13 20:34:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:34:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2022-12-13 20:34:49,128 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 89 [2022-12-13 20:34:49,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:34:49,128 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2022-12-13 20:34:49,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.953488372093023) internal successors, (213), 43 states have internal predecessors, (213), 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) [2022-12-13 20:34:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2022-12-13 20:34:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 20:34:49,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:49,129 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:34:49,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 20:34:49,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 20:34:49,331 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:34:49,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:49,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1153978611, now seen corresponding path program 8 times [2022-12-13 20:34:49,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:49,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643050747] [2022-12-13 20:34:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:49,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:34:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 14 proven. 170 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 20:34:50,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:34:50,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643050747] [2022-12-13 20:34:50,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643050747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:34:50,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996333207] [2022-12-13 20:34:50,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:34:50,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:34:50,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:50,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:34:50,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 20:34:50,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:34:50,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:34:50,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 77 conjunts are in the unsatisfiable core [2022-12-13 20:34:50,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:34:50,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:34:50,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-13 20:34:50,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:50,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:34:50,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:50,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:50,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:34:50,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:50,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:34:50,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:50,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:34:50,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:34:50,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-13 20:34:50,780 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:34:50,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2022-12-13 20:34:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 14 proven. 184 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:34:51,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:34:52,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2022-12-13 20:34:52,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 43 [2022-12-13 20:34:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 20:34:52,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996333207] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:34:52,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:34:52,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 23] total 57 [2022-12-13 20:34:52,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542341673] [2022-12-13 20:34:52,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:34:52,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-12-13 20:34:52,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:34:52,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-12-13 20:34:52,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=2920, Unknown=0, NotChecked=0, Total=3192 [2022-12-13 20:34:52,622 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand has 57 states, 57 states have (on average 4.56140350877193) internal successors, (260), 57 states have internal predecessors, (260), 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) [2022-12-13 20:35:01,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:35:01,675 INFO L93 Difference]: Finished difference Result 256 states and 280 transitions. [2022-12-13 20:35:01,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-12-13 20:35:01,676 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.56140350877193) internal successors, (260), 57 states have internal predecessors, (260), 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 95 [2022-12-13 20:35:01,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:35:01,676 INFO L225 Difference]: With dead ends: 256 [2022-12-13 20:35:01,677 INFO L226 Difference]: Without dead ends: 246 [2022-12-13 20:35:01,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 155 SyntacticMatches, 9 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4674 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2005, Invalid=15817, Unknown=0, NotChecked=0, Total=17822 [2022-12-13 20:35:01,679 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 1114 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 3398 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 3682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 3398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:35:01,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 501 Invalid, 3682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 3398 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 20:35:01,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-12-13 20:35:01,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 108. [2022-12-13 20:35:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0560747663551402) internal successors, (113), 107 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:35:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2022-12-13 20:35:01,694 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 95 [2022-12-13 20:35:01,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:35:01,695 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2022-12-13 20:35:01,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.56140350877193) internal successors, (260), 57 states have internal predecessors, (260), 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) [2022-12-13 20:35:01,695 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2022-12-13 20:35:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 20:35:01,695 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:35:01,695 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:35:01,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 20:35:01,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 20:35:01,897 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:35:01,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:01,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2062515033, now seen corresponding path program 9 times [2022-12-13 20:35:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:01,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864514085] [2022-12-13 20:35:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:01,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 203 proven. 64 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 20:35:02,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:02,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864514085] [2022-12-13 20:35:02,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864514085] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:35:02,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613855338] [2022-12-13 20:35:02,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:35:02,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:35:02,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:35:02,414 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:35:02,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 20:35:03,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-12-13 20:35:03,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:35:03,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 20:35:03,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:35:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 252 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 20:35:04,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:35:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 252 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 20:35:04,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613855338] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:35:04,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:35:04,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 52 [2022-12-13 20:35:04,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885435853] [2022-12-13 20:35:04,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:35:04,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-13 20:35:04,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:04,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-13 20:35:04,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=2017, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 20:35:04,354 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand has 52 states, 52 states have (on average 5.019230769230769) internal successors, (261), 52 states have internal predecessors, (261), 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) [2022-12-13 20:35:04,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:35:04,793 INFO L93 Difference]: Finished difference Result 294 states and 309 transitions. [2022-12-13 20:35:04,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 20:35:04,793 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.019230769230769) internal successors, (261), 52 states have internal predecessors, (261), 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 107 [2022-12-13 20:35:04,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:35:04,794 INFO L225 Difference]: With dead ends: 294 [2022-12-13 20:35:04,794 INFO L226 Difference]: Without dead ends: 129 [2022-12-13 20:35:04,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=852, Invalid=2688, Unknown=0, NotChecked=0, Total=3540 [2022-12-13 20:35:04,795 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 406 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:35:04,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 343 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:35:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-13 20:35:04,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 120. [2022-12-13 20:35:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.050420168067227) internal successors, (125), 119 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:35:04,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2022-12-13 20:35:04,809 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 107 [2022-12-13 20:35:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:35:04,809 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2022-12-13 20:35:04,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.019230769230769) internal successors, (261), 52 states have internal predecessors, (261), 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) [2022-12-13 20:35:04,809 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2022-12-13 20:35:04,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 20:35:04,810 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:35:04,810 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:35:04,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 20:35:05,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 20:35:05,011 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:35:05,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:05,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1198320184, now seen corresponding path program 10 times [2022-12-13 20:35:05,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:05,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243280162] [2022-12-13 20:35:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:05,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 18 proven. 262 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 20:35:06,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:06,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243280162] [2022-12-13 20:35:06,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243280162] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:35:06,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608593808] [2022-12-13 20:35:06,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 20:35:06,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:35:06,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:35:06,772 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:35:06,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 20:35:06,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 20:35:06,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:35:06,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 20:35:06,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:35:07,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:35:07,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-12-13 20:35:07,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:07,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:35:07,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:07,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:07,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:35:07,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:35:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 66 proven. 234 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 20:35:07,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:35:08,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2022-12-13 20:35:08,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 122 [2022-12-13 20:35:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 66 proven. 212 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-13 20:35:08,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608593808] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:35:08,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:35:08,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 19] total 52 [2022-12-13 20:35:08,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045784785] [2022-12-13 20:35:08,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:35:08,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-13 20:35:08,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:08,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-13 20:35:08,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2430, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 20:35:08,493 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand has 52 states, 52 states have (on average 5.288461538461538) internal successors, (275), 52 states have internal predecessors, (275), 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) [2022-12-13 20:35:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:35:11,870 INFO L93 Difference]: Finished difference Result 249 states and 269 transitions. [2022-12-13 20:35:11,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-13 20:35:11,870 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.288461538461538) internal successors, (275), 52 states have internal predecessors, (275), 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 119 [2022-12-13 20:35:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:35:11,871 INFO L225 Difference]: With dead ends: 249 [2022-12-13 20:35:11,871 INFO L226 Difference]: Without dead ends: 239 [2022-12-13 20:35:11,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 228 SyntacticMatches, 3 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2967 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1243, Invalid=11639, Unknown=0, NotChecked=0, Total=12882 [2022-12-13 20:35:11,872 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 535 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 3812 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 4031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 3812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:35:11,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 983 Invalid, 4031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 3812 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 20:35:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-12-13 20:35:11,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 126. [2022-12-13 20:35:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.04) internal successors, (130), 125 states have internal predecessors, (130), 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) [2022-12-13 20:35:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2022-12-13 20:35:11,888 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 119 [2022-12-13 20:35:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:35:11,888 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2022-12-13 20:35:11,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.288461538461538) internal successors, (275), 52 states have internal predecessors, (275), 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) [2022-12-13 20:35:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2022-12-13 20:35:11,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-13 20:35:11,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:35:11,889 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:35:11,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 20:35:12,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 20:35:12,090 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:35:12,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:12,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1692542951, now seen corresponding path program 11 times [2022-12-13 20:35:12,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:12,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020533731] [2022-12-13 20:35:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:12,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 20 proven. 346 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 20:35:13,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:13,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020533731] [2022-12-13 20:35:13,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020533731] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:35:13,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773614106] [2022-12-13 20:35:13,460 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 20:35:13,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:35:13,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:35:13,461 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:35:13,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 20:35:16,355 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-12-13 20:35:16,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:35:16,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 86 conjunts are in the unsatisfiable core [2022-12-13 20:35:16,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:35:16,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:35:16,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-13 20:35:16,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:16,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:35:16,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:16,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:16,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:35:16,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:16,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:35:16,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:16,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:16,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:35:16,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:16,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:35:16,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:16,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:16,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:35:16,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-13 20:35:16,883 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:35:16,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2022-12-13 20:35:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 20 proven. 346 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 20:35:17,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:35:27,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-12-13 20:35:27,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2022-12-13 20:35:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 20:35:27,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773614106] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:35:27,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:35:27,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26, 28] total 70 [2022-12-13 20:35:27,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740108381] [2022-12-13 20:35:27,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:35:27,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-12-13 20:35:27,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:27,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-12-13 20:35:27,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=4474, Unknown=2, NotChecked=0, Total=4830 [2022-12-13 20:35:27,874 INFO L87 Difference]: Start difference. First operand 126 states and 130 transitions. Second operand has 70 states, 70 states have (on average 4.714285714285714) internal successors, (330), 70 states have internal predecessors, (330), 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) [2022-12-13 20:35:42,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:35:42,780 INFO L93 Difference]: Finished difference Result 381 states and 412 transitions. [2022-12-13 20:35:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-12-13 20:35:42,780 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.714285714285714) internal successors, (330), 70 states have internal predecessors, (330), 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 125 [2022-12-13 20:35:42,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:35:42,781 INFO L225 Difference]: With dead ends: 381 [2022-12-13 20:35:42,781 INFO L226 Difference]: Without dead ends: 371 [2022-12-13 20:35:42,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 208 SyntacticMatches, 11 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10394 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=3604, Invalid=33450, Unknown=2, NotChecked=0, Total=37056 [2022-12-13 20:35:42,784 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 1792 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 5571 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 6034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 5571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:35:42,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 791 Invalid, 6034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 5571 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 20:35:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-12-13 20:35:42,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 138. [2022-12-13 20:35:42,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0437956204379562) internal successors, (143), 137 states have internal predecessors, (143), 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) [2022-12-13 20:35:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 143 transitions. [2022-12-13 20:35:42,808 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 143 transitions. Word has length 125 [2022-12-13 20:35:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:35:42,808 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 143 transitions. [2022-12-13 20:35:42,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.714285714285714) internal successors, (330), 70 states have internal predecessors, (330), 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) [2022-12-13 20:35:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 143 transitions. [2022-12-13 20:35:42,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-13 20:35:42,809 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:35:42,809 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:35:42,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-13 20:35:43,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 20:35:43,010 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:35:43,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:43,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2040887679, now seen corresponding path program 12 times [2022-12-13 20:35:43,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:43,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687929957] [2022-12-13 20:35:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:43,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 377 proven. 95 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 20:35:43,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:43,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687929957] [2022-12-13 20:35:43,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687929957] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:35:43,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404283239] [2022-12-13 20:35:43,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 20:35:43,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:35:43,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:35:43,694 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:35:43,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 20:35:46,399 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-12-13 20:35:46,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:35:46,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 20:35:46,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:35:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 444 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 20:35:47,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:35:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 444 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 20:35:48,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404283239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:35:48,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:35:48,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 22] total 63 [2022-12-13 20:35:48,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977160287] [2022-12-13 20:35:48,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:35:48,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-13 20:35:48,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:48,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-13 20:35:48,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=931, Invalid=2975, Unknown=0, NotChecked=0, Total=3906 [2022-12-13 20:35:48,009 INFO L87 Difference]: Start difference. First operand 138 states and 143 transitions. Second operand has 63 states, 63 states have (on average 5.174603174603175) internal successors, (326), 63 states have internal predecessors, (326), 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) [2022-12-13 20:35:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:35:48,722 INFO L93 Difference]: Finished difference Result 372 states and 387 transitions. [2022-12-13 20:35:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 20:35:48,723 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.174603174603175) internal successors, (326), 63 states have internal predecessors, (326), 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 137 [2022-12-13 20:35:48,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:35:48,723 INFO L225 Difference]: With dead ends: 372 [2022-12-13 20:35:48,724 INFO L226 Difference]: Without dead ends: 159 [2022-12-13 20:35:48,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2021 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1199, Invalid=3913, Unknown=0, NotChecked=0, Total=5112 [2022-12-13 20:35:48,725 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 644 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:35:48,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 390 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:35:48,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-12-13 20:35:48,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 150. [2022-12-13 20:35:48,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0402684563758389) internal successors, (155), 149 states have internal predecessors, (155), 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) [2022-12-13 20:35:48,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 155 transitions. [2022-12-13 20:35:48,747 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 155 transitions. Word has length 137 [2022-12-13 20:35:48,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:35:48,747 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 155 transitions. [2022-12-13 20:35:48,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.174603174603175) internal successors, (326), 63 states have internal predecessors, (326), 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) [2022-12-13 20:35:48,747 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 155 transitions. [2022-12-13 20:35:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 20:35:48,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:35:48,748 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:35:48,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 20:35:48,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:35:48,949 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:35:48,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:48,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2081585746, now seen corresponding path program 13 times [2022-12-13 20:35:48,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:48,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542012579] [2022-12-13 20:35:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:48,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 36 proven. 543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:35:52,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:52,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542012579] [2022-12-13 20:35:52,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542012579] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:35:52,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115158870] [2022-12-13 20:35:52,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 20:35:52,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:35:52,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:35:52,543 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:35:52,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 20:35:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:52,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-13 20:35:52,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:35:52,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:35:52,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-12-13 20:35:52,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:52,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:35:52,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:52,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:35:52,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:35:53,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:35:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 90 proven. 436 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 20:35:53,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:35:55,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2022-12-13 20:35:55,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 122 [2022-12-13 20:35:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 90 proven. 397 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-12-13 20:35:55,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115158870] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:35:55,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:35:55,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 22, 23] total 72 [2022-12-13 20:35:55,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352867378] [2022-12-13 20:35:55,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:35:55,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-13 20:35:55,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:55,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-13 20:35:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=4731, Unknown=1, NotChecked=0, Total=5112 [2022-12-13 20:35:55,574 INFO L87 Difference]: Start difference. First operand 150 states and 155 transitions. Second operand has 72 states, 72 states have (on average 5.236111111111111) internal successors, (377), 72 states have internal predecessors, (377), 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) [2022-12-13 20:36:05,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:36:05,577 INFO L93 Difference]: Finished difference Result 590 states and 631 transitions. [2022-12-13 20:36:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-12-13 20:36:05,578 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 5.236111111111111) internal successors, (377), 72 states have internal predecessors, (377), 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 149 [2022-12-13 20:36:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:36:05,579 INFO L225 Difference]: With dead ends: 590 [2022-12-13 20:36:05,579 INFO L226 Difference]: Without dead ends: 485 [2022-12-13 20:36:05,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 278 SyntacticMatches, 8 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11256 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2843, Invalid=34598, Unknown=1, NotChecked=0, Total=37442 [2022-12-13 20:36:05,581 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 1258 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 8919 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 9417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 8919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:36:05,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1681 Invalid, 9417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 8919 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 20:36:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-12-13 20:36:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 208. [2022-12-13 20:36:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0338164251207729) internal successors, (214), 207 states have internal predecessors, (214), 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) [2022-12-13 20:36:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 214 transitions. [2022-12-13 20:36:05,619 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 214 transitions. Word has length 149 [2022-12-13 20:36:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:36:05,619 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 214 transitions. [2022-12-13 20:36:05,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 5.236111111111111) internal successors, (377), 72 states have internal predecessors, (377), 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) [2022-12-13 20:36:05,619 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 214 transitions. [2022-12-13 20:36:05,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-13 20:36:05,620 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:36:05,620 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:36:05,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 20:36:05,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 20:36:05,821 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:36:05,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1434600319, now seen corresponding path program 14 times [2022-12-13 20:36:05,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:05,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125244667] [2022-12-13 20:36:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:05,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 26 proven. 584 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 20:36:07,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:07,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125244667] [2022-12-13 20:36:07,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125244667] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:36:07,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331819909] [2022-12-13 20:36:07,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:36:07,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:07,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:36:07,672 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:36:07,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 20:36:07,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:36:07,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:36:07,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 109 conjunts are in the unsatisfiable core [2022-12-13 20:36:07,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:36:08,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:36:08,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-13 20:36:08,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:36:08,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:36:08,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:36:08,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:36:08,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:36:08,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:36:08,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:36:08,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:36:08,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:36:08,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-13 20:36:08,535 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:36:08,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2022-12-13 20:36:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 26 proven. 628 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:36:09,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:36:32,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2022-12-13 20:36:32,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 43 [2022-12-13 20:36:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-13 20:36:33,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331819909] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:36:33,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:36:33,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 32, 35] total 87 [2022-12-13 20:36:33,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491178824] [2022-12-13 20:36:33,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:36:33,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-12-13 20:36:33,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:33,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-12-13 20:36:33,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=6982, Unknown=3, NotChecked=0, Total=7482 [2022-12-13 20:36:33,486 INFO L87 Difference]: Start difference. First operand 208 states and 214 transitions. Second operand has 87 states, 87 states have (on average 4.873563218390805) internal successors, (424), 87 states have internal predecessors, (424), 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) [2022-12-13 20:36:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:36:57,442 INFO L93 Difference]: Finished difference Result 545 states and 586 transitions. [2022-12-13 20:36:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-12-13 20:36:57,442 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 4.873563218390805) internal successors, (424), 87 states have internal predecessors, (424), 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 155 [2022-12-13 20:36:57,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:36:57,443 INFO L225 Difference]: With dead ends: 545 [2022-12-13 20:36:57,443 INFO L226 Difference]: Without dead ends: 535 [2022-12-13 20:36:57,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 257 SyntacticMatches, 13 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17286 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=5037, Invalid=54740, Unknown=3, NotChecked=0, Total=59780 [2022-12-13 20:36:57,446 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 2310 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 9310 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 9947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 9310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:36:57,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 1421 Invalid, 9947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 9310 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-13 20:36:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-12-13 20:36:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 220. [2022-12-13 20:36:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.0365296803652968) internal successors, (227), 219 states have internal predecessors, (227), 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) [2022-12-13 20:36:57,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 227 transitions. [2022-12-13 20:36:57,488 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 227 transitions. Word has length 155 [2022-12-13 20:36:57,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:36:57,489 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 227 transitions. [2022-12-13 20:36:57,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 4.873563218390805) internal successors, (424), 87 states have internal predecessors, (424), 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) [2022-12-13 20:36:57,489 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 227 transitions. [2022-12-13 20:36:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 20:36:57,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:36:57,490 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:36:57,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 20:36:57,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:57,691 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:36:57,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:57,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1980367899, now seen corresponding path program 15 times [2022-12-13 20:36:57,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:57,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361829585] [2022-12-13 20:36:57,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:57,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 605 proven. 130 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-13 20:36:58,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:58,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361829585] [2022-12-13 20:36:58,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361829585] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:36:58,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591438977] [2022-12-13 20:36:58,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:36:58,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:58,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:36:58,608 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:36:58,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 20:37:03,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-12-13 20:37:03,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:37:03,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 20:37:03,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:37:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 690 proven. 45 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-13 20:37:05,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:37:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 690 proven. 45 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-13 20:37:05,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591438977] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:37:05,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:37:05,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 26] total 76 [2022-12-13 20:37:05,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665734560] [2022-12-13 20:37:05,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:37:05,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-12-13 20:37:05,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:37:05,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-12-13 20:37:05,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1339, Invalid=4361, Unknown=0, NotChecked=0, Total=5700 [2022-12-13 20:37:05,986 INFO L87 Difference]: Start difference. First operand 220 states and 227 transitions. Second operand has 76 states, 76 states have (on average 5.171052631578948) internal successors, (393), 76 states have internal predecessors, (393), 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) [2022-12-13 20:37:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:37:06,799 INFO L93 Difference]: Finished difference Result 337 states and 347 transitions. [2022-12-13 20:37:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 20:37:06,800 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 5.171052631578948) internal successors, (393), 76 states have internal predecessors, (393), 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 167 [2022-12-13 20:37:06,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:37:06,800 INFO L225 Difference]: With dead ends: 337 [2022-12-13 20:37:06,800 INFO L226 Difference]: Without dead ends: 189 [2022-12-13 20:37:06,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2979 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1683, Invalid=5627, Unknown=0, NotChecked=0, Total=7310 [2022-12-13 20:37:06,801 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 457 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:37:06,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 637 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 20:37:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-12-13 20:37:06,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 180. [2022-12-13 20:37:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.0335195530726258) internal successors, (185), 179 states have internal predecessors, (185), 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) [2022-12-13 20:37:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 185 transitions. [2022-12-13 20:37:06,835 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 185 transitions. Word has length 167 [2022-12-13 20:37:06,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:37:06,835 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 185 transitions. [2022-12-13 20:37:06,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 5.171052631578948) internal successors, (393), 76 states have internal predecessors, (393), 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) [2022-12-13 20:37:06,835 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 185 transitions. [2022-12-13 20:37:06,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-13 20:37:06,835 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:37:06,836 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:37:06,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 20:37:07,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:37:07,037 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:37:07,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:37:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1726846508, now seen corresponding path program 16 times [2022-12-13 20:37:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:37:07,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15521467] [2022-12-13 20:37:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:37:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:37:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 30 proven. 792 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-13 20:37:10,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:37:10,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15521467] [2022-12-13 20:37:10,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15521467] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:37:10,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299638513] [2022-12-13 20:37:10,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 20:37:10,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:37:10,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:37:10,783 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:37:10,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 20:37:10,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 20:37:10,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:37:10,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-13 20:37:10,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:37:11,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:37:11,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-12-13 20:37:11,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:11,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:37:11,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:11,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:11,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:37:12,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:37:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 114 proven. 700 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-13 20:37:12,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:37:13,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2022-12-13 20:37:13,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 122 [2022-12-13 20:37:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 114 proven. 640 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-12-13 20:37:13,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299638513] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:37:13,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:37:13,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 26, 27] total 81 [2022-12-13 20:37:13,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335780961] [2022-12-13 20:37:13,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:37:13,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-12-13 20:37:13,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:37:13,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-12-13 20:37:13,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=6112, Unknown=0, NotChecked=0, Total=6480 [2022-12-13 20:37:13,966 INFO L87 Difference]: Start difference. First operand 180 states and 185 transitions. Second operand has 81 states, 81 states have (on average 5.37037037037037) internal successors, (435), 81 states have internal predecessors, (435), 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) [2022-12-13 20:37:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:37:24,362 INFO L93 Difference]: Finished difference Result 454 states and 485 transitions. [2022-12-13 20:37:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-12-13 20:37:24,363 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 5.37037037037037) internal successors, (435), 81 states have internal predecessors, (435), 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 179 [2022-12-13 20:37:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:37:24,364 INFO L225 Difference]: With dead ends: 454 [2022-12-13 20:37:24,364 INFO L226 Difference]: Without dead ends: 444 [2022-12-13 20:37:24,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 337 SyntacticMatches, 6 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10706 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2615, Invalid=37987, Unknown=0, NotChecked=0, Total=40602 [2022-12-13 20:37:24,366 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 1148 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 9438 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 9977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 9438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:37:24,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 2463 Invalid, 9977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 9438 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 20:37:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-12-13 20:37:24,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 186. [2022-12-13 20:37:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.027027027027027) internal successors, (190), 185 states have internal predecessors, (190), 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) [2022-12-13 20:37:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 190 transitions. [2022-12-13 20:37:24,403 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 190 transitions. Word has length 179 [2022-12-13 20:37:24,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:37:24,403 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 190 transitions. [2022-12-13 20:37:24,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 5.37037037037037) internal successors, (435), 81 states have internal predecessors, (435), 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) [2022-12-13 20:37:24,403 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 190 transitions. [2022-12-13 20:37:24,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 20:37:24,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:37:24,404 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:37:24,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 20:37:24,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 20:37:24,605 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:37:24,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:37:24,606 INFO L85 PathProgramCache]: Analyzing trace with hash -426183899, now seen corresponding path program 17 times [2022-12-13 20:37:24,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:37:24,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226100135] [2022-12-13 20:37:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:24,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:37:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:37:27,166 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 32 proven. 884 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-13 20:37:27,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:37:27,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226100135] [2022-12-13 20:37:27,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226100135] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:37:27,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442832912] [2022-12-13 20:37:27,167 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 20:37:27,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:37:27,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:37:27,168 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:37:27,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 20:37:38,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-12-13 20:37:38,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:37:38,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 98 conjunts are in the unsatisfiable core [2022-12-13 20:37:38,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:37:39,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:37:39,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-13 20:37:39,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:37:39,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:37:39,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:37:39,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:37:39,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:37:39,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:37:39,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:37:39,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:37:39,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:37:39,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:37:39,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:37:39,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-12-13 20:37:39,853 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:37:39,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2022-12-13 20:37:40,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:37:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 32 proven. 884 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-13 20:37:40,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:38:16,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-13 20:38:16,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-12-13 20:38:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 32 proven. 882 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-13 20:38:16,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442832912] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:38:16,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:38:16,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 39] total 90 [2022-12-13 20:38:16,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572257164] [2022-12-13 20:38:16,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:38:16,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-12-13 20:38:16,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:38:16,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-12-13 20:38:16,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=7486, Unknown=7, NotChecked=0, Total=8010 [2022-12-13 20:38:16,677 INFO L87 Difference]: Start difference. First operand 186 states and 190 transitions. Second operand has 90 states, 90 states have (on average 5.355555555555555) internal successors, (482), 90 states have internal predecessors, (482), 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) [2022-12-13 20:38:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:38:40,470 INFO L93 Difference]: Finished difference Result 816 states and 882 transitions. [2022-12-13 20:38:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-12-13 20:38:40,471 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 5.355555555555555) internal successors, (482), 90 states have internal predecessors, (482), 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 185 [2022-12-13 20:38:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:38:40,472 INFO L225 Difference]: With dead ends: 816 [2022-12-13 20:38:40,473 INFO L226 Difference]: Without dead ends: 806 [2022-12-13 20:38:40,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 322 SyntacticMatches, 13 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14808 ImplicationChecksByTransitivity, 54.4s TimeCoverageRelationStatistics Valid=4832, Invalid=52043, Unknown=7, NotChecked=0, Total=56882 [2022-12-13 20:38:40,475 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 3186 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 10911 mSolverCounterSat, 1574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3186 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 12485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1574 IncrementalHoareTripleChecker+Valid, 10911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:38:40,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3186 Valid, 2156 Invalid, 12485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1574 Valid, 10911 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 20:38:40,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-12-13 20:38:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 192. [2022-12-13 20:38:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.0261780104712042) internal successors, (196), 191 states have internal predecessors, (196), 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) [2022-12-13 20:38:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2022-12-13 20:38:40,518 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 185 [2022-12-13 20:38:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:38:40,518 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2022-12-13 20:38:40,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 5.355555555555555) internal successors, (482), 90 states have internal predecessors, (482), 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) [2022-12-13 20:38:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2022-12-13 20:38:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-12-13 20:38:40,519 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:38:40,519 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:38:40,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 20:38:40,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:40,721 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:38:40,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:38:40,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1492533256, now seen corresponding path program 18 times [2022-12-13 20:38:40,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:38:40,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948325373] [2022-12-13 20:38:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:40,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:38:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:38:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 1082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:38:42,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:38:42,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948325373] [2022-12-13 20:38:42,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948325373] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:38:42,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689324925] [2022-12-13 20:38:42,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 20:38:42,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:42,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:38:42,230 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:38:42,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 20:38:49,213 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2022-12-13 20:38:49,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:38:49,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 20:38:49,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:38:49,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:38:49,288 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:38:49,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 31 [2022-12-13 20:38:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 20:38:50,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:38:50,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-12-13 20:38:50,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-12-13 20:38:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 20:38:50,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689324925] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:38:50,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:38:50,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 48 [2022-12-13 20:38:50,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872264929] [2022-12-13 20:38:50,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:38:50,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 20:38:50,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:38:50,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 20:38:50,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2120, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 20:38:50,247 INFO L87 Difference]: Start difference. First operand 192 states and 196 transitions. Second operand has 48 states, 48 states have (on average 6.520833333333333) internal successors, (313), 48 states have internal predecessors, (313), 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) [2022-12-13 20:38:57,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:38:57,248 INFO L93 Difference]: Finished difference Result 546 states and 572 transitions. [2022-12-13 20:38:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2022-12-13 20:38:57,249 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.520833333333333) internal successors, (313), 48 states have internal predecessors, (313), 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 191 [2022-12-13 20:38:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:38:57,251 INFO L225 Difference]: With dead ends: 546 [2022-12-13 20:38:57,251 INFO L226 Difference]: Without dead ends: 544 [2022-12-13 20:38:57,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 364 SyntacticMatches, 14 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21325 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2671, Invalid=53735, Unknown=0, NotChecked=0, Total=56406 [2022-12-13 20:38:57,254 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 754 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 6863 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 7222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 6863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:38:57,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1285 Invalid, 7222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 6863 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 20:38:57,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-12-13 20:38:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 198. [2022-12-13 20:38:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.0304568527918783) internal successors, (203), 197 states have internal predecessors, (203), 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) [2022-12-13 20:38:57,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 203 transitions. [2022-12-13 20:38:57,312 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 203 transitions. Word has length 191 [2022-12-13 20:38:57,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:38:57,312 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 203 transitions. [2022-12-13 20:38:57,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.520833333333333) internal successors, (313), 48 states have internal predecessors, (313), 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) [2022-12-13 20:38:57,312 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 203 transitions. [2022-12-13 20:38:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-12-13 20:38:57,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:38:57,313 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:38:57,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 20:38:57,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 20:38:57,513 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:38:57,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:38:57,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1685349003, now seen corresponding path program 19 times [2022-12-13 20:38:57,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:38:57,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96159841] [2022-12-13 20:38:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:57,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:38:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:38:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 887 proven. 169 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 20:38:58,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:38:58,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96159841] [2022-12-13 20:38:58,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96159841] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:38:58,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43195003] [2022-12-13 20:38:58,598 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 20:38:58,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:38:58,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:38:58,599 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:38:58,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 20:38:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:38:58,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 20:38:58,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:39:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 990 proven. 66 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 20:39:00,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:39:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 990 proven. 66 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 20:39:01,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43195003] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:39:01,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:39:01,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 30] total 88 [2022-12-13 20:39:01,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846140842] [2022-12-13 20:39:01,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:39:01,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-12-13 20:39:01,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:39:01,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-12-13 20:39:01,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1790, Invalid=5866, Unknown=0, NotChecked=0, Total=7656 [2022-12-13 20:39:01,309 INFO L87 Difference]: Start difference. First operand 198 states and 203 transitions. Second operand has 88 states, 88 states have (on average 5.215909090909091) internal successors, (459), 88 states have internal predecessors, (459), 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) [2022-12-13 20:39:02,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:39:02,186 INFO L93 Difference]: Finished difference Result 528 states and 543 transitions. [2022-12-13 20:39:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 20:39:02,186 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 5.215909090909091) internal successors, (459), 88 states have internal predecessors, (459), 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 197 [2022-12-13 20:39:02,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:39:02,187 INFO L225 Difference]: With dead ends: 528 [2022-12-13 20:39:02,187 INFO L226 Difference]: Without dead ends: 219 [2022-12-13 20:39:02,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4059 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2208, Invalid=7494, Unknown=0, NotChecked=0, Total=9702 [2022-12-13 20:39:02,188 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 761 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:39:02,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 573 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 20:39:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-12-13 20:39:02,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 210. [2022-12-13 20:39:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.0287081339712918) internal successors, (215), 209 states have internal predecessors, (215), 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) [2022-12-13 20:39:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 215 transitions. [2022-12-13 20:39:02,239 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 215 transitions. Word has length 197 [2022-12-13 20:39:02,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:39:02,240 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 215 transitions. [2022-12-13 20:39:02,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 5.215909090909091) internal successors, (459), 88 states have internal predecessors, (459), 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) [2022-12-13 20:39:02,240 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 215 transitions. [2022-12-13 20:39:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-12-13 20:39:02,240 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:39:02,240 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 13, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:39:02,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 20:39:02,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 20:39:02,442 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:39:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:39:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1458643514, now seen corresponding path program 20 times [2022-12-13 20:39:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:39:02,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143109513] [2022-12-13 20:39:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:39:02,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:39:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:39:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 36 proven. 1136 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-13 20:39:07,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:39:07,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143109513] [2022-12-13 20:39:07,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143109513] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:39:07,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695745549] [2022-12-13 20:39:07,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:39:07,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:39:07,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:39:07,735 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:39:07,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 20:39:07,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:39:07,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:39:07,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 76 conjunts are in the unsatisfiable core [2022-12-13 20:39:07,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:39:08,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:39:08,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-12-13 20:39:08,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:39:08,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:39:08,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:39:08,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:39:08,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2022-12-13 20:39:10,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 20:39:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 138 proven. 1026 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 20:39:10,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:39:11,876 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_820| Int)) (or (forall ((v_ArrVal_2683 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* 12 |v_ULTIMATE.start_main_~i~0#1_820|) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_2683) (+ 68 |c_ULTIMATE.start_main_~#volArray~0#1.offset|)) |c_ULTIMATE.start_main_~MINVAL~0#1|)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_820|)))) is different from false [2022-12-13 20:39:14,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2022-12-13 20:39:14,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4402 treesize of output 4338 [2022-12-13 20:41:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 138 proven. 935 refuted. 0 times theorem prover too weak. 184 trivial. 6 not checked. [2022-12-13 20:41:48,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695745549] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:41:48,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:41:48,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 30, 32] total 95 [2022-12-13 20:41:48,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084774629] [2022-12-13 20:41:48,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:41:48,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-12-13 20:41:48,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:41:48,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-12-13 20:41:48,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=8307, Unknown=5, NotChecked=184, Total=8930 [2022-12-13 20:41:48,103 INFO L87 Difference]: Start difference. First operand 210 states and 215 transitions. Second operand has 95 states, 95 states have (on average 5.3578947368421055) internal successors, (509), 95 states have internal predecessors, (509), 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) [2022-12-13 20:42:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:42:08,232 INFO L93 Difference]: Finished difference Result 609 states and 647 transitions. [2022-12-13 20:42:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-12-13 20:42:08,233 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 5.3578947368421055) internal successors, (509), 95 states have internal predecessors, (509), 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 209 [2022-12-13 20:42:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:42:08,235 INFO L225 Difference]: With dead ends: 609 [2022-12-13 20:42:08,235 INFO L226 Difference]: Without dead ends: 599 [2022-12-13 20:42:08,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 394 SyntacticMatches, 27 SemanticMatches, 257 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20375 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=3686, Invalid=62619, Unknown=5, NotChecked=512, Total=66822 [2022-12-13 20:42:08,241 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 1463 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 13796 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 3804 SdHoareTripleChecker+Invalid, 14998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 13796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 481 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:42:08,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 3804 Invalid, 14998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 13796 Invalid, 0 Unknown, 481 Unchecked, 6.0s Time] [2022-12-13 20:42:08,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-12-13 20:42:08,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 216. [2022-12-13 20:42:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0232558139534884) internal successors, (220), 215 states have internal predecessors, (220), 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) [2022-12-13 20:42:08,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2022-12-13 20:42:08,298 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 209 [2022-12-13 20:42:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:42:08,298 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 220 transitions. [2022-12-13 20:42:08,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 5.3578947368421055) internal successors, (509), 95 states have internal predecessors, (509), 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) [2022-12-13 20:42:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 220 transitions. [2022-12-13 20:42:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-12-13 20:42:08,299 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:42:08,299 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 13, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:42:08,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 20:42:08,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 20:42:08,500 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:42:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:42:08,501 INFO L85 PathProgramCache]: Analyzing trace with hash -733395189, now seen corresponding path program 21 times [2022-12-13 20:42:08,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:42:08,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762970080] [2022-12-13 20:42:08,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:42:08,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:42:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:42:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1375 backedges. 38 proven. 1246 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-13 20:42:12,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:42:12,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762970080] [2022-12-13 20:42:12,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762970080] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:42:12,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151550898] [2022-12-13 20:42:12,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:42:12,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:42:12,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:42:12,005 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:42:12,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da837a84-bbdc-44cc-a61c-574dcb06b1cf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 20:42:29,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2022-12-13 20:42:29,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:42:29,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 216 conjunts are in the unsatisfiable core [2022-12-13 20:42:29,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:42:30,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 20:42:30,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-13 20:42:30,184 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 20:42:30,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-12-13 20:42:30,259 INFO L321 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2022-12-13 20:42:30,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 52 [2022-12-13 20:42:30,355 INFO L321 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-12-13 20:42:30,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 40 [2022-12-13 20:42:30,438 INFO L321 Elim1Store]: treesize reduction 79, result has 10.2 percent of original size [2022-12-13 20:42:30,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 67 treesize of output 67 [2022-12-13 20:42:30,553 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-12-13 20:42:30,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 55 [2022-12-13 20:42:30,645 INFO L321 Elim1Store]: treesize reduction 79, result has 10.2 percent of original size [2022-12-13 20:42:30,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 70 treesize of output 82 [2022-12-13 20:42:30,781 INFO L321 Elim1Store]: treesize reduction 47, result has 24.2 percent of original size [2022-12-13 20:42:30,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 62 treesize of output 76 [2022-12-13 20:42:30,880 INFO L321 Elim1Store]: treesize reduction 79, result has 10.2 percent of original size [2022-12-13 20:42:30,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 76 treesize of output 88 [2022-12-13 20:42:31,117 INFO L321 Elim1Store]: treesize reduction 53, result has 14.5 percent of original size [2022-12-13 20:42:31,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 104 treesize of output 76 [2022-12-13 20:42:31,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:31,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:31,216 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-12-13 20:42:31,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 106 treesize of output 103 [2022-12-13 20:42:31,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:31,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:31,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:31,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:31,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:31,895 INFO L321 Elim1Store]: treesize reduction 334, result has 12.8 percent of original size [2022-12-13 20:42:31,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 40 case distinctions, treesize of input 133 treesize of output 156 [2022-12-13 20:42:32,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:42:32,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:32,243 INFO L321 Elim1Store]: treesize reduction 472, result has 21.2 percent of original size [2022-12-13 20:42:32,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 49 case distinctions, treesize of input 153 treesize of output 261 [2022-12-13 20:42:34,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,130 INFO L321 Elim1Store]: treesize reduction 414, result has 10.6 percent of original size [2022-12-13 20:42:34,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 28 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 59 case distinctions, treesize of input 209 treesize of output 214 [2022-12-13 20:42:34,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:42:34,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:34,607 INFO L321 Elim1Store]: treesize reduction 684, result has 7.1 percent of original size [2022-12-13 20:42:34,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 36 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 82 case distinctions, treesize of input 238 treesize of output 244 [2022-12-13 20:42:35,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,371 INFO L321 Elim1Store]: treesize reduction 470, result has 9.4 percent of original size [2022-12-13 20:42:35,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 36 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 70 case distinctions, treesize of input 221 treesize of output 229 [2022-12-13 20:42:35,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:42:35,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:35,832 INFO L321 Elim1Store]: treesize reduction 796, result has 6.1 percent of original size [2022-12-13 20:42:35,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 45 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 109 case distinctions, treesize of input 259 treesize of output 259 [2022-12-13 20:42:36,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,439 INFO L321 Elim1Store]: treesize reduction 494, result has 9.0 percent of original size [2022-12-13 20:42:36,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 45 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 82 case distinctions, treesize of input 227 treesize of output 238 [2022-12-13 20:42:36,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:42:36,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:36,840 INFO L321 Elim1Store]: treesize reduction 820, result has 6.0 percent of original size [2022-12-13 20:42:36,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 55 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 124 case distinctions, treesize of input 265 treesize of output 268 [2022-12-13 20:42:37,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,576 INFO L321 Elim1Store]: treesize reduction 534, result has 8.4 percent of original size [2022-12-13 20:42:37,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 55 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 95 case distinctions, treesize of input 236 treesize of output 250 [2022-12-13 20:42:37,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:42:37,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:37,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,118 INFO L321 Elim1Store]: treesize reduction 860, result has 5.7 percent of original size [2022-12-13 20:42:38,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 66 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 140 case distinctions, treesize of input 274 treesize of output 280 [2022-12-13 20:42:38,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:38,950 INFO L321 Elim1Store]: treesize reduction 590, result has 7.7 percent of original size [2022-12-13 20:42:38,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 66 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 109 case distinctions, treesize of input 248 treesize of output 265 [2022-12-13 20:42:39,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:39,582 INFO L321 Elim1Store]: treesize reduction 916, result has 5.1 percent of original size [2022-12-13 20:42:39,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 91 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 157 case distinctions, treesize of input 286 treesize of output 292 [2022-12-13 20:42:40,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:42:40,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 134 treesize of output 163 [2022-12-13 20:42:40,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:42:40,564 INFO L321 Elim1Store]: treesize reduction 182, result has 21.2 percent of original size [2022-12-13 20:42:40,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 74 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 82 case distinctions, treesize of input 160 treesize of output 175 [2022-12-13 20:42:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1375 backedges. 84 proven. 1225 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-13 20:42:50,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:43:13,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 221 [2022-12-13 20:43:13,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:43:13,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2518093 treesize of output 2508869 [2022-12-13 20:43:21,299 WARN L233 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 3381 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-13 20:43:29,497 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 645 DAG size of output: 645 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)