./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound10.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_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4cd3813e1162515d6dfe6f021a67e8bd41b689ea28e27900ea441d7fd3bbe5cc --- 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 [2022-11-26 00:31:44,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:31:44,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:31:44,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:31:44,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:31:44,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:31:44,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:31:44,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:31:44,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:31:44,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:31:44,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:31:44,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:31:44,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:31:44,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:31:44,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:31:44,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:31:44,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:31:44,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:31:44,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:31:44,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:31:44,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:31:44,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:31:44,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:31:44,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:31:44,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:31:44,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:31:44,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:31:44,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:31:44,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:31:44,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:31:44,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:31:44,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:31:44,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:31:44,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:31:44,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:31:44,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:31:44,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:31:44,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:31:44,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:31:44,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:31:44,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:31:44,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:31:44,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:31:44,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:31:44,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:31:44,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:31:44,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:31:44,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:31:44,567 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:31:44,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:31:44,567 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:31:44,568 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:31:44,568 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:31:44,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:31:44,569 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:31:44,569 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:31:44,569 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:31:44,569 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:31:44,570 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:31:44,570 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:31:44,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:31:44,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:31:44,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:31:44,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:31:44,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:31:44,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:31:44,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:31:44,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:31:44,573 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:31:44,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:31:44,574 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:31:44,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:31:44,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:31:44,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:31:44,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:31:44,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:31:44,576 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:31:44,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:31:44,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:31:44,577 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:31:44,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:31:44,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:31:44,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:31:44,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cd3813e1162515d6dfe6f021a67e8bd41b689ea28e27900ea441d7fd3bbe5cc [2022-11-26 00:31:44,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:31:44,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:31:44,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:31:44,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:31:44,886 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:31:44,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound10.c [2022-11-26 00:31:47,947 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:31:48,191 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:31:48,192 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound10.c [2022-11-26 00:31:48,201 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/data/20a367b16/9186059fe34f40478227c21906e91af3/FLAG866c015b9 [2022-11-26 00:31:48,218 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/data/20a367b16/9186059fe34f40478227c21906e91af3 [2022-11-26 00:31:48,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:31:48,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:31:48,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:31:48,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:31:48,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:31:48,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161057b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48, skipping insertion in model container [2022-11-26 00:31:48,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:31:48,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:31:48,412 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_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound10.c[458,471] [2022-11-26 00:31:48,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:31:48,438 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:31:48,451 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_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound10.c[458,471] [2022-11-26 00:31:48,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:31:48,475 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:31:48,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48 WrapperNode [2022-11-26 00:31:48,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:31:48,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:31:48,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:31:48,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:31:48,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,508 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-11-26 00:31:48,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:31:48,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:31:48,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:31:48,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:31:48,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,528 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:31:48,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:31:48,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:31:48,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:31:48,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (1/1) ... [2022-11-26 00:31:48,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:31:48,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:31:48,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:31:48,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:31:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:31:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 00:31:48,608 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 00:31:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:31:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:31:48,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:31:48,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:31:48,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:31:48,666 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:31:48,669 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:31:48,801 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:31:48,825 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:31:48,825 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:31:48,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:31:48 BoogieIcfgContainer [2022-11-26 00:31:48,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:31:48,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:31:48,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:31:48,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:31:48,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:31:48" (1/3) ... [2022-11-26 00:31:48,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7320114f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:31:48, skipping insertion in model container [2022-11-26 00:31:48,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:31:48" (2/3) ... [2022-11-26 00:31:48,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7320114f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:31:48, skipping insertion in model container [2022-11-26 00:31:48,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:31:48" (3/3) ... [2022-11-26 00:31:48,839 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound10.c [2022-11-26 00:31:48,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:31:48,861 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:31:48,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:31:48,930 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2546656f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:31:48,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:31:48,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-26 00:31:48,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:31:48,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:31:48,944 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:31:48,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:31:48,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:31:48,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2113922188, now seen corresponding path program 1 times [2022-11-26 00:31:48,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:31:48,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906271466] [2022-11-26 00:31:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:31:48,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:31:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:31:49,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:31:49,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906271466] [2022-11-26 00:31:49,123 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-26 00:31:49,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976974296] [2022-11-26 00:31:49,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:31:49,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:31:49,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:31:49,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:31:49,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:31:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:31:49,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-26 00:31:49,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:31:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:31:49,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:31:49,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976974296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:31:49,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:31:49,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:31:49,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446760048] [2022-11-26 00:31:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:31:49,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:31:49,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:31:49,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:31:49,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:31:49,327 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:31:49,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:31:49,359 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2022-11-26 00:31:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:31:49,364 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-11-26 00:31:49,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:31:49,374 INFO L225 Difference]: With dead ends: 32 [2022-11-26 00:31:49,374 INFO L226 Difference]: Without dead ends: 17 [2022-11-26 00:31:49,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:31:49,385 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:31:49,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:31:49,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-26 00:31:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-26 00:31:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-26 00:31:49,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-26 00:31:49,427 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2022-11-26 00:31:49,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:31:49,435 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-26 00:31:49,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:31:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-26 00:31:49,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:31:49,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:31:49,437 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:31:49,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:31:49,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-26 00:31:49,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:31:49,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:31:49,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2066763035, now seen corresponding path program 1 times [2022-11-26 00:31:49,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:31:49,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634868526] [2022-11-26 00:31:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:31:49,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:31:49,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:31:49,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102673567] [2022-11-26 00:31:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:31:49,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:31:49,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:31:49,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:31:49,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:31:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:31:49,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:31:49,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:31:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:31:49,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:31:49,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:31:49,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634868526] [2022-11-26 00:31:49,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:31:49,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102673567] [2022-11-26 00:31:49,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102673567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:31:49,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:31:49,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:31:49,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734414763] [2022-11-26 00:31:49,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:31:49,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:31:49,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:31:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:31:49,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:31:49,880 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:31:49,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:31:49,973 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-11-26 00:31:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:31:49,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-11-26 00:31:49,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:31:49,976 INFO L225 Difference]: With dead ends: 28 [2022-11-26 00:31:49,977 INFO L226 Difference]: Without dead ends: 24 [2022-11-26 00:31:49,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:31:49,982 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:31:49,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:31:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-26 00:31:49,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-26 00:31:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-26 00:31:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-26 00:31:49,992 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2022-11-26 00:31:49,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:31:49,993 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-26 00:31:49,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:31:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-26 00:31:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-26 00:31:49,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:31:49,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:31:50,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:31:50,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-26 00:31:50,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:31:50,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:31:50,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1985624712, now seen corresponding path program 1 times [2022-11-26 00:31:50,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:31:50,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060443379] [2022-11-26 00:31:50,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:31:50,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:31:50,222 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:31:50,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463122641] [2022-11-26 00:31:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:31:50,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:31:50,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:31:50,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:31:50,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:31:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:31:50,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-26 00:31:50,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:31:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:31:50,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:31:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-26 00:31:50,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:31:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060443379] [2022-11-26 00:31:50,883 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:31:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463122641] [2022-11-26 00:31:50,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463122641] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-26 00:31:50,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:31:50,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-26 00:31:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556110177] [2022-11-26 00:31:50,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:31:50,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:31:50,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:31:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:31:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:31:50,886 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 00:31:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:31:51,044 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-11-26 00:31:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:31:51,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2022-11-26 00:31:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:31:51,047 INFO L225 Difference]: With dead ends: 30 [2022-11-26 00:31:51,047 INFO L226 Difference]: Without dead ends: 26 [2022-11-26 00:31:51,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:31:51,052 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:31:51,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:31:51,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-26 00:31:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-26 00:31:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-26 00:31:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-26 00:31:51,075 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20 [2022-11-26 00:31:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:31:51,076 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-26 00:31:51,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 00:31:51,077 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-26 00:31:51,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-26 00:31:51,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:31:51,079 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:31:51,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:31:51,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:31:51,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:31:51,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:31:51,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1002189902, now seen corresponding path program 1 times [2022-11-26 00:31:51,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:31:51,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315192185] [2022-11-26 00:31:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:31:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:31:51,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:31:51,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972734427] [2022-11-26 00:31:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:31:51,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:31:51,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:31:51,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:31:51,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:31:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:31:51,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-26 00:31:51,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:31:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-26 00:31:51,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:31:55,737 WARN L837 $PredicateComparison]: unable to prove that (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2022-11-26 00:32:15,894 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int)) (or (= (mod (+ (* 29 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 10 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 15 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) 30) 0) (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|))))) is different from true [2022-11-26 00:32:34,026 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int)) (or (= (mod (+ (* 29 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 10 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 15 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) 30) 0) (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-26 00:32:38,053 WARN L837 $PredicateComparison]: unable to prove that (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2022-11-26 00:32:46,137 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2022-11-26 00:32:48,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:48,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315192185] [2022-11-26 00:32:48,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:32:48,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972734427] [2022-11-26 00:32:48,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972734427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:32:48,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1332506942] [2022-11-26 00:32:48,204 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-26 00:32:48,204 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:32:48,212 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:32:48,218 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:32:48,219 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:32:49,011 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-26 00:32:49,016 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 75 for LOIs [2022-11-26 00:32:49,052 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:32:49,915 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '617#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:32:49,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:32:49,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:32:49,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-11-26 00:32:49,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507019839] [2022-11-26 00:32:49,916 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-26 00:32:49,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:32:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:32:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=400, Unknown=5, NotChecked=220, Total=702 [2022-11-26 00:32:49,918 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-26 00:32:50,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:50,092 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-11-26 00:32:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:32:50,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 31 [2022-11-26 00:32:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:50,094 INFO L225 Difference]: With dead ends: 35 [2022-11-26 00:32:50,094 INFO L226 Difference]: Without dead ends: 29 [2022-11-26 00:32:50,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=96, Invalid=519, Unknown=5, NotChecked=250, Total=870 [2022-11-26 00:32:50,096 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:50,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:32:50,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-26 00:32:50,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-26 00:32:50,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-26 00:32:50,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-11-26 00:32:50,107 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 31 [2022-11-26 00:32:50,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:50,107 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-26 00:32:50,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-26 00:32:50,108 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-11-26 00:32:50,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-26 00:32:50,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:50,110 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:32:50,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:32:50,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:32:50,316 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:32:50,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:50,316 INFO L85 PathProgramCache]: Analyzing trace with hash -180873249, now seen corresponding path program 2 times [2022-11-26 00:32:50,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:50,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901432744] [2022-11-26 00:32:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:50,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:50,335 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:32:50,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590040476] [2022-11-26 00:32:50,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:32:50,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:32:50,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:32:50,342 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:32:50,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:32:50,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-26 00:32:50,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:32:50,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-26 00:32:50,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:32:50,683 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-26 00:32:50,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:32:54,986 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2022-11-26 00:32:54,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:54,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901432744] [2022-11-26 00:32:54,990 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:32:54,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590040476] [2022-11-26 00:32:54,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590040476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:32:54,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [280369569] [2022-11-26 00:32:54,992 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-26 00:32:54,993 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:32:54,993 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:32:54,993 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:32:54,993 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:32:55,542 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-26 00:32:55,548 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 75 for LOIs [2022-11-26 00:32:55,576 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:32:56,476 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '909#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:32:56,476 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:32:56,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:32:56,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-11-26 00:32:56,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535537706] [2022-11-26 00:32:56,476 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-26 00:32:56,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:32:56,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:56,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:32:56,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=522, Unknown=1, NotChecked=46, Total=650 [2022-11-26 00:32:56,478 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-26 00:32:56,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:56,713 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-11-26 00:32:56,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:32:56,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 38 [2022-11-26 00:32:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:56,715 INFO L225 Difference]: With dead ends: 38 [2022-11-26 00:32:56,715 INFO L226 Difference]: Without dead ends: 32 [2022-11-26 00:32:56,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=101, Invalid=658, Unknown=1, NotChecked=52, Total=812 [2022-11-26 00:32:56,716 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:56,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 77 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:32:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-26 00:32:56,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-26 00:32:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-26 00:32:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-11-26 00:32:56,730 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 38 [2022-11-26 00:32:56,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:56,732 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-11-26 00:32:56,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-26 00:32:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-11-26 00:32:56,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-26 00:32:56,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:56,736 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:32:56,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:32:56,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:32:56,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:32:56,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:56,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1515507950, now seen corresponding path program 3 times [2022-11-26 00:32:56,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:56,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223919935] [2022-11-26 00:32:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:56,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:56,966 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:32:56,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864044438] [2022-11-26 00:32:56,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:32:56,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:32:56,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:32:56,970 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:32:57,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:32:57,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:32:57,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:32:57,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-26 00:32:57,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:32:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-26 00:32:57,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:32:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-26 00:32:57,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:57,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223919935] [2022-11-26 00:32:57,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:32:57,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864044438] [2022-11-26 00:32:57,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864044438] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:32:57,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [380680737] [2022-11-26 00:32:57,606 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-26 00:32:57,606 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:32:57,606 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:32:57,607 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:32:57,607 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:32:58,136 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-26 00:32:58,141 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 75 for LOIs [2022-11-26 00:32:58,172 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:32:59,108 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1313#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:32:59,109 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:32:59,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:32:59,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2022-11-26 00:32:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860509123] [2022-11-26 00:32:59,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:32:59,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-26 00:32:59,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:59,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-26 00:32:59,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-11-26 00:32:59,111 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 12 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-26 00:32:59,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:59,993 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2022-11-26 00:32:59,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:32:59,994 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 12 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 45 [2022-11-26 00:32:59,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:59,995 INFO L225 Difference]: With dead ends: 53 [2022-11-26 00:32:59,995 INFO L226 Difference]: Without dead ends: 45 [2022-11-26 00:32:59,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=204, Invalid=1278, Unknown=0, NotChecked=0, Total=1482 [2022-11-26 00:32:59,997 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:59,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 176 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:32:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-26 00:33:00,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2022-11-26 00:33:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-26 00:33:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-11-26 00:33:00,033 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 45 [2022-11-26 00:33:00,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:00,034 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-11-26 00:33:00,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 12 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-26 00:33:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-11-26 00:33:00,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-26 00:33:00,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:00,037 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:00,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:33:00,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:00,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:00,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:00,243 INFO L85 PathProgramCache]: Analyzing trace with hash -949240366, now seen corresponding path program 4 times [2022-11-26 00:33:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:00,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401275893] [2022-11-26 00:33:00,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:00,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:00,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:33:00,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178167175] [2022-11-26 00:33:00,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:33:00,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:00,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:00,267 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:00,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:33:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:02,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-26 00:33:02,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 41 proven. 85 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-26 00:33:02,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:33:06,832 WARN L837 $PredicateComparison]: unable to prove that (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2022-11-26 00:33:26,948 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_85| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_85|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78|)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| 29) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| 10) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| 15)) 30) 0)))) is different from true [2022-11-26 00:33:45,010 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_85| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_85|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78|)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| 29) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| 10) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_78| 15)) 30) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-26 00:33:49,028 WARN L837 $PredicateComparison]: unable to prove that (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2022-11-26 00:33:57,153 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2022-11-26 00:33:59,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:59,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401275893] [2022-11-26 00:33:59,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:33:59,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178167175] [2022-11-26 00:33:59,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178167175] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:33:59,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1563493095] [2022-11-26 00:33:59,187 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-26 00:33:59,187 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:33:59,187 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:33:59,187 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:33:59,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:33:59,906 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-26 00:33:59,915 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 75 for LOIs [2022-11-26 00:33:59,940 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:34:01,086 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1787#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:34:01,086 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:34:01,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:34:01,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-26 00:34:01,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848127098] [2022-11-26 00:34:01,087 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-26 00:34:01,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-26 00:34:01,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:34:01,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-26 00:34:01,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=682, Unknown=5, NotChecked=280, Total=1056 [2022-11-26 00:34:01,089 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 10 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-26 00:34:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:34:01,617 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-11-26 00:34:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:34:01,618 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 10 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) Word has length 73 [2022-11-26 00:34:01,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:34:01,619 INFO L225 Difference]: With dead ends: 53 [2022-11-26 00:34:01,619 INFO L226 Difference]: Without dead ends: 47 [2022-11-26 00:34:01,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=108, Invalid=837, Unknown=5, NotChecked=310, Total=1260 [2022-11-26 00:34:01,621 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:34:01,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 192 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:34:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-26 00:34:01,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-26 00:34:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-26 00:34:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2022-11-26 00:34:01,649 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 73 [2022-11-26 00:34:01,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:34:01,650 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2022-11-26 00:34:01,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 10 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-26 00:34:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2022-11-26 00:34:01,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-26 00:34:01,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:01,660 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:34:01,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-26 00:34:01,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:01,868 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:34:01,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:34:01,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1086423487, now seen corresponding path program 5 times [2022-11-26 00:34:01,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:34:01,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68980994] [2022-11-26 00:34:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:01,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:34:01,879 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:34:01,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039692695] [2022-11-26 00:34:01,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:34:01,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:01,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:34:01,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:34:01,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90804d9-94fb-4ac7-a3e7-8cf493e374ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process