./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array3_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array3_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R --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 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 --- 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-38b53e6 [2022-11-25 18:23:59,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:23:59,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:23:59,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:23:59,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:23:59,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:23:59,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:23:59,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:23:59,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:23:59,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:23:59,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:23:59,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:23:59,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:23:59,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:23:59,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:23:59,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:23:59,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:23:59,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:23:59,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:23:59,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:23:59,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:23:59,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:23:59,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:23:59,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:23:59,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:23:59,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:23:59,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:23:59,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:23:59,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:23:59,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:23:59,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:23:59,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:23:59,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:23:59,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:23:59,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:23:59,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:23:59,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:23:59,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:23:59,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:23:59,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:23:59,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:23:59,549 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:23:59,573 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:23:59,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:23:59,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:23:59,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:23:59,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:23:59,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:23:59,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:23:59,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:23:59,575 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:23:59,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:23:59,576 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:23:59,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:23:59,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:23:59,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:23:59,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:23:59,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:23:59,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:23:59,577 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:23:59,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:23:59,578 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:23:59,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:23:59,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:23:59,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:23:59,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:23:59,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:23:59,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:23:59,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:23:59,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:23:59,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:23:59,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:23:59,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:23:59,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:23:59,580 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:23:59,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:23:59,581 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_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 [2022-11-25 18:23:59,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:23:59,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:23:59,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:23:59,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:23:59,907 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:23:59,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/array-patterns/array3_pattern.c [2022-11-25 18:24:02,946 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:24:03,168 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:24:03,169 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/sv-benchmarks/c/array-patterns/array3_pattern.c [2022-11-25 18:24:03,176 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/data/16cbb667d/dd740e87e1694c0785eaefee2e273fbf/FLAG9679a6e8d [2022-11-25 18:24:03,193 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/data/16cbb667d/dd740e87e1694c0785eaefee2e273fbf [2022-11-25 18:24:03,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:24:03,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:24:03,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:24:03,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:24:03,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:24:03,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659ef8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03, skipping insertion in model container [2022-11-25 18:24:03,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:24:03,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:24:03,395 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_a0946ae1-cdf1-4864-ba22-941214d49f8d/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2022-11-25 18:24:03,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:24:03,433 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:24:03,444 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_a0946ae1-cdf1-4864-ba22-941214d49f8d/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2022-11-25 18:24:03,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:24:03,469 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:24:03,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03 WrapperNode [2022-11-25 18:24:03,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:24:03,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:24:03,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:24:03,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:24:03,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,505 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2022-11-25 18:24:03,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:24:03,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:24:03,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:24:03,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:24:03,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,532 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:24:03,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:24:03,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:24:03,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:24:03,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (1/1) ... [2022-11-25 18:24:03,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:24:03,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:03,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:03,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:24:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:24:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 18:24:03,624 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 18:24:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:24:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:24:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:24:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure square [2022-11-25 18:24:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2022-11-25 18:24:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:24:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:24:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:24:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:24:03,702 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:24:03,704 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:24:04,016 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:24:04,022 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:24:04,023 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 18:24:04,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:24:04 BoogieIcfgContainer [2022-11-25 18:24:04,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:24:04,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:24:04,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:24:04,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:24:04,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:24:03" (1/3) ... [2022-11-25 18:24:04,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9fb7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:24:04, skipping insertion in model container [2022-11-25 18:24:04,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:03" (2/3) ... [2022-11-25 18:24:04,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9fb7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:24:04, skipping insertion in model container [2022-11-25 18:24:04,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:24:04" (3/3) ... [2022-11-25 18:24:04,035 INFO L112 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2022-11-25 18:24:04,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:24:04,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:24:04,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:24:04,107 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;@2f9a8528, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:24:04,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:24:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:24:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 18:24:04,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:04,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:04,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:04,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:04,129 INFO L85 PathProgramCache]: Analyzing trace with hash -87958078, now seen corresponding path program 1 times [2022-11-25 18:24:04,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:04,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751007522] [2022-11-25 18:24:04,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:04,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:24:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:04,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:04,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751007522] [2022-11-25 18:24:04,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751007522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:04,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:04,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:24:04,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275969802] [2022-11-25 18:24:04,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:04,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:24:04,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:04,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:24:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:24:04,489 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:24:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:04,519 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2022-11-25 18:24:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:24:04,521 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-25 18:24:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:04,528 INFO L225 Difference]: With dead ends: 61 [2022-11-25 18:24:04,528 INFO L226 Difference]: Without dead ends: 28 [2022-11-25 18:24:04,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:24:04,538 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2022-11-25 18:24:04,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:24:04,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-25 18:24:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-25 18:24:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:24:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-25 18:24:04,586 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2022-11-25 18:24:04,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:04,587 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-25 18:24:04,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:24:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-25 18:24:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 18:24:04,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:04,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:04,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:24:04,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:04,595 INFO L85 PathProgramCache]: Analyzing trace with hash 100431803, now seen corresponding path program 1 times [2022-11-25 18:24:04,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:04,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436365559] [2022-11-25 18:24:04,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:04,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:04,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:24:04,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566397962] [2022-11-25 18:24:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:04,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:04,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:04,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:04,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:24:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:04,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:24:04,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:24:04,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:04,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:04,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436365559] [2022-11-25 18:24:04,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:24:04,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566397962] [2022-11-25 18:24:04,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566397962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:04,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:04,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:24:04,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526521595] [2022-11-25 18:24:04,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:04,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:24:04,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:04,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:24:04,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:24:04,937 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:24:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:04,967 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-11-25 18:24:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:24:04,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-25 18:24:04,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:04,969 INFO L225 Difference]: With dead ends: 35 [2022-11-25 18:24:04,969 INFO L226 Difference]: Without dead ends: 31 [2022-11-25 18:24:04,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:24:04,971 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:04,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:24:04,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-25 18:24:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-11-25 18:24:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:24:04,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-25 18:24:04,981 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2022-11-25 18:24:04,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:04,981 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-25 18:24:04,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:24:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-25 18:24:04,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-25 18:24:04,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:04,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:04,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 18:24:05,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:05,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:05,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:05,189 INFO L85 PathProgramCache]: Analyzing trace with hash -562345857, now seen corresponding path program 1 times [2022-11-25 18:24:05,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:05,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998387440] [2022-11-25 18:24:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:05,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:05,244 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:24:05,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589139522] [2022-11-25 18:24:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:05,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:05,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:05,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:05,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:24:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:05,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:24:05,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 18:24:05,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:05,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:05,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998387440] [2022-11-25 18:24:05,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:24:05,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589139522] [2022-11-25 18:24:05,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589139522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:05,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:05,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452373965] [2022-11-25 18:24:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:05,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:24:05,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:05,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:24:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:24:05,473 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:24:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:05,601 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-11-25 18:24:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:24:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2022-11-25 18:24:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:05,604 INFO L225 Difference]: With dead ends: 59 [2022-11-25 18:24:05,604 INFO L226 Difference]: Without dead ends: 36 [2022-11-25 18:24:05,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:24:05,609 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:05,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 100 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:24:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-25 18:24:05,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2022-11-25 18:24:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:24:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-25 18:24:05,623 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2022-11-25 18:24:05,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:05,625 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-25 18:24:05,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 18:24:05,626 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-25 18:24:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-25 18:24:05,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:05,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:05,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:05,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:05,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1168592577, now seen corresponding path program 1 times [2022-11-25 18:24:05,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:05,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836191157] [2022-11-25 18:24:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:05,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:05,864 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:24:05,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346528121] [2022-11-25 18:24:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:05,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:05,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:05,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:05,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:24:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:06,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-25 18:24:06,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:06,117 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 10 treesize of output 8 [2022-11-25 18:24:06,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,202 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-25 18:24:06,210 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 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-25 18:24:06,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-25 18:24:06,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-25 18:24:06,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:06,996 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 162 [2022-11-25 18:24:07,020 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 0 case distinctions, treesize of input 162 treesize of output 154 [2022-11-25 18:24:07,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:07,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:07,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 197 [2022-11-25 18:24:07,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:07,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2022-11-25 18:24:07,115 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-25 18:24:07,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:07,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:07,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 17 [2022-11-25 18:24:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:08,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:23,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:23,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836191157] [2022-11-25 18:24:23,620 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:24:23,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346528121] [2022-11-25 18:24:23,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346528121] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:23,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:24:23,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-11-25 18:24:23,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193245132] [2022-11-25 18:24:23,621 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:23,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 18:24:23,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:23,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 18:24:23,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=978, Unknown=5, NotChecked=0, Total=1122 [2022-11-25 18:24:23,623 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 24 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:24:28,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:28,317 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2022-11-25 18:24:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-25 18:24:28,318 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2022-11-25 18:24:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:28,320 INFO L225 Difference]: With dead ends: 81 [2022-11-25 18:24:28,320 INFO L226 Difference]: Without dead ends: 46 [2022-11-25 18:24:28,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=409, Invalid=2342, Unknown=5, NotChecked=0, Total=2756 [2022-11-25 18:24:28,322 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 81 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:28,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 200 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 18:24:28,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-25 18:24:28,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2022-11-25 18:24:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:24:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-11-25 18:24:28,332 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 36 [2022-11-25 18:24:28,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:28,333 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-11-25 18:24:28,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:24:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-11-25 18:24:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 18:24:28,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:28,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:28,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:28,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:28,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:28,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:28,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1846883197, now seen corresponding path program 2 times [2022-11-25 18:24:28,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:28,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061229734] [2022-11-25 18:24:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:28,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:28,576 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:24:28,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548492889] [2022-11-25 18:24:28,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:24:28,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:28,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:28,578 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:28,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:24:28,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:24:28,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:28,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:24:28,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 18:24:28,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:24:28,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:28,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061229734] [2022-11-25 18:24:28,861 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:24:28,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548492889] [2022-11-25 18:24:28,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548492889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:28,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:24:28,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-25 18:24:28,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312847586] [2022-11-25 18:24:28,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:28,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:24:28,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:28,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:24:28,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:24:28,864 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 18:24:29,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:29,228 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-11-25 18:24:29,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:24:29,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 38 [2022-11-25 18:24:29,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:29,230 INFO L225 Difference]: With dead ends: 51 [2022-11-25 18:24:29,230 INFO L226 Difference]: Without dead ends: 47 [2022-11-25 18:24:29,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-25 18:24:29,231 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 46 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:29,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 100 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:24:29,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-25 18:24:29,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2022-11-25 18:24:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:24:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-11-25 18:24:29,242 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 38 [2022-11-25 18:24:29,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:29,242 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-11-25 18:24:29,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 18:24:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-25 18:24:29,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 18:24:29,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:29,244 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:29,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:29,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:29,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:29,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1239986503, now seen corresponding path program 3 times [2022-11-25 18:24:29,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:29,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776920848] [2022-11-25 18:24:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:29,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:29,474 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:24:29,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802965934] [2022-11-25 18:24:29,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:24:29,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:29,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:29,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:29,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:24:29,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 18:24:29,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:29,681 WARN L261 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-25 18:24:29,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:29,704 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 10 treesize of output 8 [2022-11-25 18:24:29,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:29,750 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-25 18:24:29,759 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 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-25 18:24:29,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-25 18:24:29,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-25 18:24:29,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:29,897 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2022-11-25 18:24:29,903 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 0 case distinctions, treesize of input 31 treesize of output 29 [2022-11-25 18:24:29,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:29,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 20 [2022-11-25 18:24:29,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:29,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 20 [2022-11-25 18:24:30,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:30,441 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 176 [2022-11-25 18:24:30,451 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 0 case distinctions, treesize of input 171 treesize of output 161 [2022-11-25 18:24:30,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:30,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:30,488 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-25 18:24:30,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 212 [2022-11-25 18:24:30,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:30,581 INFO L321 Elim1Store]: treesize reduction 50, result has 39.8 percent of original size [2022-11-25 18:24:30,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 52 [2022-11-25 18:24:30,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 179 treesize of output 93 [2022-11-25 18:24:40,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:24:40,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 372 treesize of output 342 [2022-11-25 18:24:40,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:40,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:40,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2022-11-25 18:24:41,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:41,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:41,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 257 treesize of output 233 [2022-11-25 18:24:41,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:41,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:41,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:24:41,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 374 treesize of output 448 [2022-11-25 18:25:39,611 WARN L233 SmtUtils]: Spent 50.43s on a formula simplification. DAG size of input: 219 DAG size of output: 98 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:25:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 18:25:47,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:26:02,983 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:26:30,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:26:30,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776920848] [2022-11-25 18:26:30,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:26:30,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802965934] [2022-11-25 18:26:30,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802965934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:26:30,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:26:30,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-25 18:26:30,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330147077] [2022-11-25 18:26:30,534 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 18:26:30,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 18:26:30,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:26:30,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 18:26:30,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2294, Unknown=10, NotChecked=0, Total=2550 [2022-11-25 18:26:30,538 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 23 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:27:04,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:27:24,104 WARN L233 SmtUtils]: Spent 13.36s on a formula simplification. DAG size of input: 141 DAG size of output: 140 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:27:25,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:27:27,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-25 18:27:42,101 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 136 DAG size of output: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:27:45,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:45,953 INFO L93 Difference]: Finished difference Result 106 states and 124 transitions. [2022-11-25 18:27:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-25 18:27:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 23 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2022-11-25 18:27:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:45,956 INFO L225 Difference]: With dead ends: 106 [2022-11-25 18:27:45,956 INFO L226 Difference]: Without dead ends: 102 [2022-11-25 18:27:45,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 167.8s TimeCoverageRelationStatistics Valid=650, Invalid=5346, Unknown=10, NotChecked=0, Total=6006 [2022-11-25 18:27:45,959 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 147 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 66 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:45,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 375 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 942 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2022-11-25 18:27:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-25 18:27:45,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 73. [2022-11-25 18:27:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 18:27:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2022-11-25 18:27:45,994 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 50 [2022-11-25 18:27:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:45,994 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2022-11-25 18:27:45,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 23 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 18:27:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2022-11-25 18:27:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 18:27:45,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:45,996 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:46,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:46,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:46,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:46,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:46,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1113507012, now seen corresponding path program 1 times [2022-11-25 18:27:46,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:46,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045897781] [2022-11-25 18:27:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:46,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:46,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:27:46,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054556518] [2022-11-25 18:27:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:46,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:46,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:46,227 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:46,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0946ae1-cdf1-4864-ba22-941214d49f8d/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:27:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:47,414 WARN L261 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 143 conjunts are in the unsatisfiable core [2022-11-25 18:27:47,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:47,535 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 10 treesize of output 8 [2022-11-25 18:27:47,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:47,604 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-25 18:27:47,610 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 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-25 18:27:47,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-25 18:27:47,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-11-25 18:27:47,808 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 0 case distinctions, treesize of input 64 treesize of output 53 [2022-11-25 18:27:48,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:48,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:48,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:48,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:48,961 INFO L321 Elim1Store]: treesize reduction 97, result has 21.1 percent of original size [2022-11-25 18:27:48,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 246 treesize of output 214 [2022-11-25 18:27:48,975 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 0 case distinctions, treesize of input 191 treesize of output 177 [2022-11-25 18:27:48,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:48,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:49,030 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-25 18:27:49,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 216 [2022-11-25 18:27:49,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:49,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:49,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:27:49,555 INFO L321 Elim1Store]: treesize reduction 269, result has 40.5 percent of original size [2022-11-25 18:27:49,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 292 treesize of output 513 [2022-11-25 18:27:50,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:50,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:50,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:27:50,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:27:50,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 62 [2022-11-25 18:27:53,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:53,383 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 233 [2022-11-25 18:27:53,397 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 0 case distinctions, treesize of input 239 treesize of output 225 [2022-11-25 18:27:53,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:53,472 INFO L321 Elim1Store]: treesize reduction 289, result has 0.3 percent of original size [2022-11-25 18:27:53,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 201 treesize of output 269 [2022-11-25 18:27:53,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:27:53,806 INFO L321 Elim1Store]: treesize reduction 50, result has 39.8 percent of original size [2022-11-25 18:27:53,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 102 treesize of output 117 [2022-11-25 18:28:17,323 WARN L233 SmtUtils]: Spent 10.31s on a formula simplification. DAG size of input: 161 DAG size of output: 104 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:29:06,638 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:29:06,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 537 treesize of output 509 [2022-11-25 18:29:08,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-25 18:29:11,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-25 18:29:12,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-25 18:29:13,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-25 18:29:14,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-25 18:29:14,334 INFO L321 Elim1Store]: treesize reduction 11, result has 47.6 percent of original size [2022-11-25 18:29:14,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-11-25 18:29:22,032 WARN L233 SmtUtils]: Spent 7.47s on a formula simplification. DAG size of input: 271 DAG size of output: 247 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 18:29:22,035 INFO L321 Elim1Store]: treesize reduction 90, result has 91.5 percent of original size [2022-11-25 18:29:22,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 54 case distinctions, treesize of input 516 treesize of output 1357